basics

Channel Basics

Here are the basics on Go channels.

Channel Operations

Here are the basic operations that can be performed on channels.

• Writing to stream (send) - Send a value into a channel ie. ch <- variable.
• Reading from stream (receive) - Receive a value from of a channel ie. variable <- ch.
  • Goroutines with sending channels may block forever if there are no receiving channels.
• Closing a channel
  • Pushing a value into a closed channel will cause a panic.
  • The value read from a closed channel will be a zero value.
  • Close the sending channel, not the receiving channel as this ensures proper control of channel to prevent race condition and panics (as writing to a closed channel cause a panic and a reading from a closed channel returns zero value).

Setup

1. Run the program.

   $ make run

Reference

• Go: Channels