Result of channel operations given a channel’s state

go-result-channel-operations.md

Operation	Channel state	Result
Read	nil	Block
	Open and Not Empty	Value
	Open and Empty	Block
	Closed	<default value>, false
	Write Only	Compilation Error
Write	nil	Block
	Open and full	Block
	Open and Not Full	Write Value
	Closed	panic
	Receive Only	Compilation Error
close	nil	panic
	Open and Not Empty	Closes Channel; reads succeed until channel is drained, then reads produce default value
	Open and Empty	Closes Channel; reads produces default value
	Closed	panic
	Receive Only	Compilation Error

Source: Concurrency in Go by Katherine Cox-Buday