Copies data into the CharzBuffer, allocating a new one if needed, and zero-terminates it.
A postblit is present on this object, but not explicitly documented in the source.
Copies it into a static array of chars
Length of the string, excluding the zero terminator.
Returns the slice of the internal buffer, excluding the zero terminator (though there is one present right off the end of the slice). You must assume its lifetime is less than that of the CharzBuffer.
Alternative for toStringz