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d编译时生成唯一标识
2022-06-13 10:20:00 【fqbqrr】
原文
这是我不久前提出的一个gensym实现:
enum gensym = q{
"_gensym" ~ __traits(identifier, {
})["__lambda".length .. $]};
// 同行多次工作.
pragma(msg, mixin(gensym)); pragma(msg, mixin(gensym));
利用了编译器为它遇见的每个λ函数生成唯一标识.
虽然不能在代码中使用他们,但错误消息中可见并且可__traits(identifier).
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