Import std.ffi.cstring

CString

extend

Extend CString

What a CString does besides ToString: a copy of a String that C code can keep, its length, and giving the copy back.

Public Static Method From(text: String): CString static method #
A CString of text's UTF-8 bytes and a NUL, in memory of its own, which C code can keep until Free gives it back. C reads it up to its first NUL, so a NUL in text ends it there.

Examples
```
Local copy = CString.From("hello")
Unsafe
    Expect(copy.Length() == 5)
    copy.Free()
End Unsafe
```
@PanicsAtCaller Public Unsafe Method Length(): Int64 method #

How many bytes it has before its first NUL. Panics when it's Null.
@PanicsAtCaller Public Unsafe Method Free() method #

Gives back what From made, and nothing else, which panics. Null is nothing to give back.

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