Assign values to byte array

xuanbao · 2018-08-07 02:30:20 · 2030 次点击    
这是一个分享于 2018-08-07 02:30:20 的资源,其中的信息可能已经有所发展或是发生改变。

I want to set an array of bytes. I'm writing this:

var FooArr [size]byte = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }

Goland tells me "expression or string literal expected", what am i doing wrong?

Thanks!


评论:

klauspost:

You can either do this:

var foo [16]byte = [...]byte { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }

or this (nicer)

var foo = [...]byte { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
8lall0:

Thanks!

nevyn:

Note that the second version doesn't tell the programmer (reader) what the size of the array is. In this case you can solve that by having 4 groups of 4 values, but in general it can be better to add the extra "[16]byte" even if you think it looks uglier.

nevyn:

Note that zero values are special in golang, so both:

var foo1 [16]byte = [16]byte{0}
var foo2 [16]byte

...will also work.

kl0nos:

FooArr := []byte{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }


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