How do you trim trailing byte 0s from a string?

[Howard Guo]

Hello gophers!

String comparison does not work as expected on a string with training byte 0s, for example string([]byte{97, 0}) != "a".

So what is the most efficient way to remove training byte 0s from a string?

Thanks & regards,

Howard

[Caleb Spare]

You are comparing two different strings. (Go does not use null
termination for its strings.)

I'm not sure about "most efficient", but a relatively simple way is
strings.TrimRight:

http://play.golang.org/p/1H_blATQVM

Note that if your null-terminated string comes via cgo, the C.GoString
function should take care of the conversion for you.

-Caleb

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[Roberto Zanotto]

+1
Removing trailing zeroes is probably never gonna be a bottleneck in your application, you should go for simplicity, not efficiency :)

[Howard Guo]

Good idea, thanks to both of you!