将unicode字符存储在golang中

Question

I'm creating a data structure for storing single unicode characters which I can then compare.

Two Questions:

1. What data types do I use?

   type ds struct { char Char // What should Char be so that I can safely compare two ds? }

2. I need a way to compare the first character of any two unicode strings. Is there a simple way to do that? Basically, how do I retrieve the first unicode character of a string?

Answer 1

Like this: type Char rune.

Pay attention to "compare", that is a complicated thing with Unicode. While code points (runes) are easy to compare numerically (U+0020 == U+0020; U+1234 < U+2345) this might or might not be what you want given case, combining characters and what else Unicode offers.