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.editorconfig

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###############################
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# Core EditorConfig Options #
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###############################
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root = true
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# All files
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[*]
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indent_style = space
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# XML project files
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[*.{csproj,vbproj,vcxproj,vcxproj.filters,proj,projitems,shproj}]
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indent_size = 2
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# XML config files
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[*.{props,targets,ruleset,config,nuspec,resx,vsixmanifest,vsct}]
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indent_size = 2
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# Code files
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[*.{cs,csx,vb,vbx}]
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indent_size = 2
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insert_final_newline = true
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charset = utf-8-bom
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###############################
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# .NET Coding Conventions #
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###############################
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[*.{cs,vb}]
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# Organize usings
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dotnet_sort_system_directives_first = true
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# this. preferences
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dotnet_style_qualification_for_field = false:silent
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dotnet_style_qualification_for_property = false:silent
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dotnet_style_qualification_for_method = false:silent
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dotnet_style_qualification_for_event = false:silent
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# Language keywords vs BCL types preferences
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dotnet_style_predefined_type_for_locals_parameters_members = true:silent
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dotnet_style_predefined_type_for_member_access = true:silent
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# Parentheses preferences
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dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:silent
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dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:silent
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dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:silent
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dotnet_style_parentheses_in_other_operators = never_if_unnecessary:silent
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# Modifier preferences
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dotnet_style_require_accessibility_modifiers = for_non_interface_members:silent
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dotnet_style_readonly_field = true:suggestion
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# Expression-level preferences
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dotnet_style_object_initializer = true:suggestion
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dotnet_style_collection_initializer = true:suggestion
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dotnet_style_explicit_tuple_names = true:suggestion
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dotnet_style_null_propagation = true:suggestion
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dotnet_style_coalesce_expression = true:suggestion
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dotnet_style_prefer_is_null_check_over_reference_equality_method = true:silent
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dotnet_style_prefer_inferred_tuple_names = true:suggestion
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dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
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dotnet_style_prefer_auto_properties = true:silent
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dotnet_style_prefer_conditional_expression_over_assignment = true:silent
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dotnet_style_prefer_conditional_expression_over_return = true:silent
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###############################
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# Naming Conventions #
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###############################
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# Style Definitions
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dotnet_naming_style.pascal_case_style.capitalization = pascal_case
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# Use PascalCase for constant fields
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dotnet_naming_rule.constant_fields_should_be_pascal_case.severity = suggestion
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dotnet_naming_rule.constant_fields_should_be_pascal_case.symbols = constant_fields
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dotnet_naming_rule.constant_fields_should_be_pascal_case.style = pascal_case_style
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dotnet_naming_symbols.constant_fields.applicable_kinds = field
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dotnet_naming_symbols.constant_fields.applicable_accessibilities = *
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dotnet_naming_symbols.constant_fields.required_modifiers = const
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tab_width= 2
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dotnet_naming_rule.private_members_with_underscore.symbols = private_fields
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dotnet_naming_rule.private_members_with_underscore.style = prefix_underscore
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dotnet_naming_rule.private_members_with_underscore.severity = suggestion
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dotnet_naming_symbols.private_fields.applicable_kinds = field
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dotnet_naming_symbols.private_fields.applicable_accessibilities = private
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dotnet_naming_style.prefix_underscore.capitalization = camel_case
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dotnet_naming_style.prefix_underscore.required_prefix = _
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dotnet_style_operator_placement_when_wrapping = beginning_of_line
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end_of_line = crlf
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###############################
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# C# Coding Conventions #
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###############################
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[*.cs]
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# var preferences
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csharp_style_var_for_built_in_types = true:silent
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csharp_style_var_when_type_is_apparent = true:silent
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csharp_style_var_elsewhere = true:silent
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# Expression-bodied members
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csharp_style_expression_bodied_methods = false:silent
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csharp_style_expression_bodied_constructors = false:silent
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csharp_style_expression_bodied_operators = false:silent
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csharp_style_expression_bodied_properties = true:silent
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csharp_style_expression_bodied_indexers = true:silent
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csharp_style_expression_bodied_accessors = true:silent
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# Pattern matching preferences
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csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
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csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
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# Null-checking preferences
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csharp_style_throw_expression = true:suggestion
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csharp_style_conditional_delegate_call = true:suggestion
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# Modifier preferences
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csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:suggestion
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# Expression-level preferences
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csharp_prefer_braces = true:silent
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csharp_style_deconstructed_variable_declaration = true:suggestion
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csharp_prefer_simple_default_expression = true:suggestion
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csharp_style_pattern_local_over_anonymous_function = true:suggestion
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csharp_style_inlined_variable_declaration = true:suggestion
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# Namespaces
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csharp_style_namespace_declarations = file_scoped:warning
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###############################
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# C# Formatting Rules #
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###############################
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# New line preferences
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csharp_new_line_before_open_brace = all
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csharp_new_line_before_else = true
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csharp_new_line_before_catch = true
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csharp_new_line_before_finally = true
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csharp_new_line_before_members_in_object_initializers = true
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csharp_new_line_before_members_in_anonymous_types = true
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csharp_new_line_between_query_expression_clauses = true
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# Indentation preferences
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csharp_indent_case_contents = true
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csharp_indent_switch_labels = true
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csharp_indent_labels = flush_left
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# Space preferences
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csharp_space_after_cast = false
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csharp_space_after_keywords_in_control_flow_statements = true
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csharp_space_between_method_call_parameter_list_parentheses = false
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csharp_space_between_method_declaration_parameter_list_parentheses = false
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csharp_space_between_parentheses = false
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csharp_space_before_colon_in_inheritance_clause = true
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csharp_space_after_colon_in_inheritance_clause = true
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csharp_space_around_binary_operators = before_and_after
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csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
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csharp_space_between_method_call_name_and_opening_parenthesis = false
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csharp_space_between_method_call_empty_parameter_list_parentheses = false
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# Wrapping preferences
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csharp_preserve_single_line_statements = true
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csharp_preserve_single_line_blocks = true
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csharp_using_directive_placement = outside_namespace:suggestion
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csharp_prefer_simple_using_statement = true:suggestion
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csharp_style_prefer_method_group_conversion = true:silent
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csharp_style_prefer_top_level_statements = true:silent
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csharp_style_prefer_primary_constructors = true:suggestion
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csharp_style_expression_bodied_lambdas = true:silent
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csharp_style_expression_bodied_local_functions = false:silent
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###############################
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# VB Coding Conventions #
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###############################
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[*.vb]
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# Modifier preferences
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visual_basic_preferred_modifier_order = Partial,Default,Private,Protected,Public,Friend,NotOverridable,Overridable,MustOverride,Overloads,Overrides,MustInherit,NotInheritable,Static,Shared,Shadows,ReadOnly,WriteOnly,Dim,Const,WithEvents,Widening,Narrowing,Custom,Async:suggestion

.github/CONTRIBUTING.md

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# Contributing to CleanArchitecture
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**First:** if you're unsure or afraid of _anything_, just ask or submit the
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issue or pull request anyways. You won't be yelled at for giving your best
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effort. The worst that can happen is that you'll be politely asked to change
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something. We appreciate any sort of contributions, and don't want a wall of
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rules to get in the way of that.
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However, for those individuals who want a bit more guidance on the best way to
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contribute to the project, read on. This document will cover what we're looking
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for. By addressing all the points we're looking for, it raises the chances we
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can quickly merge or address your contributions.
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## Issues
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### Reporting an Issue
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* Make sure you test against the latest released version. It is possible we
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already fixed the bug you're experiencing.
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* If you can, check and see if there is an existing open issue that is already
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reporting the problem. Feel free to upvote this issue or comment on it to
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describe your specific scenario (assuming it's the same underlying issue).
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* Provide a reproducible test case. If a contributor can't reproduce an issue,
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then it dramatically lowers the chances it'll get fixed. And in some cases,
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the issue will eventually be closed.
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* Respond promptly to any questions made by the maintainers about your issue. Stale
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issues will be closed (eventually).
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## Pull Requests
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* Pull requests are welcome but are most likely to be accepted when they address
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an existing issue. A common workflow is to create an issue describing the problem
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your PR would solve, and then volunteer to submit a PR addressing the issue as an
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initial comment on the issue.
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* As much as possible, pull requests should follow the existing coding conventions
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used by the project. This is generally true for any project. The only exception to
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this would be a pull request whose purpose is to adjust the coding conventions used
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by the project.
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* When possible, issues will be marked with a `help wanted` tag if community contributions
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are particularly welcome for them. This will often be the case for relatively simple
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fixes that would make good initial contributions.
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* If your PR addresses an issue, please include "Fixes #NNN" in the summary for the PR
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so that the issue is linked to the PR (and vice versa) and if/when the PR is merged,
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the issue is automatically closed.
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Thank you for reading this and for considering contributing to this project!
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.github/FUNDING.yml

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# These are supported funding model platforms
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github: [ardalis]

.github/ISSUE_TEMPLATE/bug_report.md

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---
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name: Bug report
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about: Create a report to help us improve
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---
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<!-- ⚠️⚠️ Do Not Delete This! bug_report_template ⚠️⚠️ -->
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<!-- 🔎 Search existing issues to avoid creating duplicates. -->
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- .NET SDK Version:
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Steps to Reproduce:
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1.
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2.

.github/ISSUE_TEMPLATE/config.yml

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blank_issues_enabled: false
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contact_links:
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- name: Question
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url: https://stackoverflow.com/questions/tagged/ardalis-cleanarchitecture
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about: Please ask and answer questions on Stack Overflow.
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---
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name: Feature request
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about: Suggest an idea for this project
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---
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<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ -->
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<!-- Please search existing issues to avoid creating duplicates. -->
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<!-- Describe the feature you'd like. -->

.github/copilot-instructions.md

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# GitHub Copilot Instructions for Clean Architecture Template
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## Project Overview
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This is a **Clean Architecture template** for .NET 9 that demonstrates Domain-Driven Design (DDD) patterns. It's a starter template, not a reference application - delete sample code once you understand the patterns.
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## Architecture & Project Structure
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### Core Dependencies Flow
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- **Core** ← UseCases ← Infrastructure
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- **Core** ← UseCases ← Web
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- Never allow Core to depend on outer layers
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### Key Projects
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- **Core**: Domain entities, aggregates, value objects, specifications, interfaces
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- **UseCases**: Commands/queries (CQRS), MediatR handlers, application logic
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- **Infrastructure**: EF Core, external services, email, file access
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- **Web**: FastEndpoints API, REPR pattern, validation
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## Development Patterns
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### API Endpoints (FastEndpoints + REPR)
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- One endpoint per file: `Create.cs`, `Update.cs`, `Delete.cs`, `GetById.cs`
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- Separate request/response/validator files: `Create.CreateRequest.cs`, `Create.CreateValidator.cs`
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- Use `Endpoint<TRequest, TResponse>` base class
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- Example: `src/Clean.Architecture.Web/Contributors/Create.cs`
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### Domain Model (Core)
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- Entities use encapsulation - minimize public setters
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- Group related entities into Aggregates
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- Use Value Objects (e.g., `ContributorName.From()`)
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- Domain Events for cross-aggregate communication
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- Repository interfaces defined in Core, implemented in Infrastructure
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### Use Cases (CQRS)
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- Commands for mutations, Queries for reads
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- Queries can bypass repository pattern for performance
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- Use MediatR for command/query handling
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- Chain of responsibility for cross-cutting concerns (logging, validation)
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### Validation Strategy
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- **API Level**: FluentValidation on request DTOs (FastEndpoints integration)
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- **Use Case Level**: Validate commands/queries (defensive coding)
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- **Domain Level**: Business invariants throw exceptions, assume pre-validated input
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## Essential Commands
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### Build & Test
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```bash
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dotnet build Clean.Architecture.sln
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dotnet test Clean.Architecture.sln
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```
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### Entity Framework Migrations
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```bash
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# From Web project directory
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dotnet ef migrations add MigrationName -c AppDbContext -p ../Clean.Architecture.Infrastructure/Clean.Architecture.Infrastructure.csproj -s Clean.Architecture.Web.csproj -o Data/Migrations
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dotnet ef database update -c AppDbContext -p ../Clean.Architecture.Infrastructure/Clean.Architecture.Infrastructure.csproj -s Clean.Architecture.Web.csproj
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```
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### Template Installation & Usage
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```bash
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dotnet new install Ardalis.CleanArchitecture.Template
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dotnet new clean-arch -o Your.ProjectName
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```
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## Key Dependencies & Patterns
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### Primary Libraries
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- **FastEndpoints**: API endpoints (replaced Controllers/Minimal APIs)
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- **MediatR**: Command/query handling in UseCases
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- **EF Core**: Data access (SQLite default, easily changed to SQL Server)
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- **Ardalis.Specification**: Repository query specifications
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- **Ardalis.Result**: Error handling pattern
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- **Serilog**: Structured logging
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### Central Package Management
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- All package versions in `Directory.Packages.props`
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- Use `<PackageReference Include="..." />` without Version attribute
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### Test Organization
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- **UnitTests**: Core business logic, use cases
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- **IntegrationTests**: Database, infrastructure components
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- **FunctionalTests**: API endpoints (subcutaneous testing)
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- Use `Microsoft.AspNetCore.Mvc.Testing` for API tests
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## File Organization Conventions
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### Web Project Structure
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```
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Contributors/
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Create.cs # Endpoint
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Create.CreateRequest.cs # Request DTO
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Create.CreateResponse.cs # Response DTO
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Create.CreateValidator.cs # FluentValidation
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Update.cs, Delete.cs, etc.
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```
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### Sample vs Template
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- `/sample` folder: Complete working example (NimblePros.SampleToDo)
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- `/src` folder: Clean template ready for your project
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- Study sample for patterns, use src for new projects
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## Common Gotchas
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- Don't include hyphens in project names (template limitation)
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- Replace `Ardalis.SharedKernel` with your own shared kernel
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- Database path in `appsettings.json` for SQLite
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- Use absolute paths in EF migration commands
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- FastEndpoints uses different validation approach than Controller-based APIs
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## VS Code Tasks
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Use the predefined tasks: `build`, `publish`, `watch` instead of manual `dotnet` commands when possible.

.github/dependabot.yml

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version: 2
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updates:
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- package-ecosystem: nuget
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directory: "/"
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schedule:
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interval: daily
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open-pull-requests-limit: 10

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