Goo is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Goo is an up-to-date fork of Go with the following syntactic sugar on top:

brew tap pannous/goo https://github.com/pannous/goo
brew install goo
goo eval "3 ** 2"

Each feature has a test
✅ if x {put("truthy")}
✅ enum Status { OK, BAD } with generated .String() method
✅ 3 ** 2 = 9
✅ τ - π ≈ 3.14159
✅ # comment and shebang support
✅ #if DEBUG put("better than compiler tags!") #end
✅ ø / ≠ / ¬ / not operator keyword for nil !
✅ and or operators for && ||
✅ no Main needed ☐ implicit package main
✅ printf as synonym for fmt.Println with fmt as auto-import
✅ typeof(x) compile-time or runtime reflect.TypeOf(x).String()?
✅ check 1>2 check keyword:
✅ if $condition { panic($condition.text) } else { println("check OK", $condition.text) }
✅ simple_list := [1,2,3] // []any{1,2,3} or []int{1,2,3}
✅ xs := ['a', 'b', 'c'] ; xs#1 == 'a' // 1-indexed array access using # operator
✅ [1, 2, 3].apply(x=>x * 2) == [2, 4, 6] // 🙌 lambdas!
✅ type check operator: 1 is int, [1, 2, 3] is []int, "hello" is string, 'a' is rune == True
✅ try f() --> if err := f(); err != nil { panic(err) or return err }
✅ try val := f() --> { val, err := f(); if err != nil { return err } }
✅ try { x } catch e { y } => func() {defer func() {if e := recover(); e != nil {y} }() x } // x, y blocks :
✅ try { panic("X") } catch x { printf("Caught: %v\n",x) } // Todo catch returned errors?
✅ go command go test.go --> defaults to go run test.go
✅ go eval "2 ** 3" => 8
✅ def as synonym for func, e.g. def main() { ... }
✅ allow unused imports: as warning!
✅ {a: 1, b: 2} => map[string]int{"a": 1, "b": 2} auto-type inference
✅ {a: 1, b: 2} == {"a": 1, "b": 2} // symbol keys to strings
✅ z := {a: 1, b: 2}; z.a == 1 and z.b == 2 // dot access to map keys
✅ map[active:true age:30 name:Alice] // read back print("%v") format
✅ x:={a:1,b:2}; put(x) => fmt.Printf("%v\n",x)
✅ [1,2]==[1,2] test_list_comparison.goo
✅ check "a"+1 == "a1"
✅ check "a" == 'a'
✅ check not x => !truthy(x)
✅ declared and not used make this a warning only (with flag to reenable error)
✅ String methods "abc".contains("a") reverse(), split(), join() …
✅ 3.14 as string == "3.14"
✅ 3.14 as int … semantic cast conversions
✅ class Person {name string, age int} person := Person{name: "Alice", age: 30} ✅ imported and not used only warning
✅ return void, e.g. return print("ok") HARD
✅ for i in 0…5 {put(i)} // range syntax
✅ "你" == '你'
✅ def modify!(xs []int) { xs#1=0 } // modify in place enforced by "!" !
✅ import "helper" / "helper.goo" // allow local imports (for go run)
✅ 1 in [1,2,3] and 'e' in "hello" // in operator for lists and strings and maps and iterators
✅ Got rid of generated cancer files like op_string.go token_string.go by stringer cancer 🤮🦀🤮
✅ Universal for-in syntax:
✅ for item in slice { ... } // Values
✅ for char in "hello" { ... } // Characters
✅ for key in myMap { ... } // Keys
✅ for item in iterator() { ... } // Iterator values
✅ for k, v in myMap { ... } // Key-value pairs
✅ for i, v in slice { ... } // Index-value pairs
✅ for k, v in iterator() { ... } // Iterator pairs
✅ while keyword as plain synonym for 'for'
✅ check 500ms + 5s == 5500ms
✅ 3**3 == 27
✅ for i in 0…5 {put(i)} // range loops now working!
✅ goo file extension
✅ func test() int { 42 } => func test() int { return 42 } auto return
☐ func test(){ return 42 } => func test() int { return 42 } auto return (+ type inference)
☐ func test(){ 42 } => func test() int { return 42 } auto return (+ type inference)
☐ check keyword works great, now let it emit debug message, e.g. check 1>0 "check OK 1>0" via builtin println
☐ runtime disable gc for extreme (resume?) performance, e.g. via go run -gc=off test.go
☐ try x vs optional chaining via ?. operator, e.g. x?.y?.z => if not err{y.z}?
☐ void(!) as synonym for func, e.g. void main(){} BAD
☐ public() -> Public() calls OK // as compiler plugin?
Rust allows snake_case to call CamelCase methods via compiler desugaring, but warns.
Automatically detect if there is an uppercased public function available, if there is no private function with lowercase name.
☐ silent/implicit error propagation
instanceOf(a, reflect.TypeOf((*T)(nil)).Elem()) // or generated static checks

☐ plugin.Open() is for loading .so files at runtime
𐄂 AAA Game Engine Core? Never

☐ while event := sdl.PollEvent(){} => for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {

☐ GPU Intrinsics: forward []int{} vectors to GPU (simple primitive SIMD/CUDA/Metal/OpenCL adapters)
☐ optional braces for function calls put 42 => put(42) ambiguity resolution (e.g. put 42 + 3 vs put(42) + 3)

x := 1
y := "test"
string interpolation:
myAutoConcat := "The value of x is " x " and the value of y is " y
myString := fmt.Sprint("The value of x is ", x, " and the value of y is ", y)
myTemplate := The value of x is ${x} and the value of y is ${y}!

*Gopher image by Renee French, licensed under Creative Commons 4.0 Attribution license

Go's canonical Git repository is located at https://go.googlesource.com/go.
There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the
BSD-style license found in the LICENSE file.

Official binary distributions are available at https://github.com/pannous/goo/releases.

Download the archive file appropriate for your installation and operating system. Extract it to /usr/local (you may need to run the command as root or through sudo):

tar -C /usr/local -xzf goo1.x.x.linux-amd64.tar.gz  

Add /usr/local/goo/bin to your PATH environment variable. You can do this by adding this line to your $HOME/.profile or /etc/profile (for a system-wide installation):

export PATH=$PATH:/usr/local/goo/bin  
export GOROOT=/usr/local/goo/  

git clone --recursive https://github.com/pannous/goo  
cd goo/src  
./make.bash  

https://go.dev/doc/install/source for more source installation instructions.

./bin/go run goo/test.goo  

All new features tested in goo folder

Todo: Web Demo

☐ any other pain points you and I might have
☐ cross off all done tasks from this list