Golang like WaitGroup implementation for sync/async Rust, support no_std environment.

By default, blocking version WaitGroup is enabled.

If you are using other async runtime, you need to enbale future feature in your Cargo.toml and use wg::AsyncWaitGroup.

• std

  [dependencies]
  wg = "0.9"

• future

  [dependencies]
  wg = { version = "0.9", features = ["future"] }

• no_std

  [dependencies]
  wg = { version = "0.9", default_features = false, features = ["alloc"] }

• no_std & future

  [dependencies]
  wg = { version = "0.9", default_features = false, features = ["alloc", "future"] }

Please see examples for details.

• Inspired by Golang sync.WaitGroup and crossbeam_utils::WaitGroup.