sync.Map的LoadOrStore用途. 2018/11/06 golang 共2687 字，約8 分鐘. 在使用sync.Map時，最常用的兩個操作是Load()和Store()，有時候需要先判斷某個key是否存在，. ... <看更多>

syncmap didn't copy the code of sync/map.go and replace its identifiers. Instead, it reads the sync/map.go from your GOROOT , parses it into an *ast.File , and ... ... <看更多>

As per the comments the issue was that you were copying a sync.Map ; the following code will fail (output "Not found" - playground): ... <看更多>

People never read past the first paragraph of the docs. So here is the rest (which says "never use sync.Map unless you are doing this one ... ... <看更多>