compare of bytes or string?

[xie cui]

compare two byte slice,will convert to compare between two string, and my question is how golang compare two string, i don't think that it just compare the len and then comapare bytes in string one byte by one byte, it should have some optimization?where is the code in compiler generate the compare codes?

[Amnon]

Matt Godblolt's web app is a fun way to explore these question.
https://godbolt.org/z/q6oz64

[xie cui]

i look into map key compare key about string,it will use runtime·memequal, i thing the stra == strb will call memequal  two.

[tapi...@gmail.com]

If both the memory addresses of the first bytes are equal, then the fast route will be selected by comparing their lengths.

Otherwise, byte by byte.