Import (std) is once as cache or into each translation unit?

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1

Hi!
How many times does the import function include the standard library in each translation unit? Is it cached or included in every translation unit, as in C++?
If I worded the question incorrectly, forgive me!
Thanks!

2

Zig doesn’t use the concept of translation units, so Zig only includes the standard library once in output binaries. So for example, if multiple modules in the same executable @import("std"), they will share the same copy.

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3

It’s very good!

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One nice ‘side effect’ of Zig’s import behavior is that it doesn’t require the @import() to be outside functions, instead you can have decentralized imports right where they are needed, which is sometimes nice for code-generated source files. E.g.:

fn cStrToZig(c_str: [*c]const u8) [:0]const u8 {
    return @import("std").mem.span(c_str);
}
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