Format

[newbie]

On Friday, 21 May 2021 at 13:59:13 UTC, drug wrote:
> 21.05.2021 16:45, newbie пишет:
>> I am following 
>> https://wiki.dlang.org/Defining_custom_print_format_specifiers, why sink and formatValue are not @safe? What are the best practice for toString in safe code? Thank you
>
> sink is obsolete now, use W(riter)
>
> ```D
> import std.range : isOutputRange;
>
> void toString(W)(ref W writer) const
> 	if (isOutputRange!(W, char))
> {
> 	// your stuff
> }
> ```
> writer can be @safe, @nogc, nothrow etc like you want

Thank you, and formatValue?