float/double to string (pure nothrow @nogc)

[Paul Backus]

On Wednesday, 8 August 2018 at 17:08:57 UTC, vit wrote:
> Hello, is in phobos some function which convert float/double to 
> string and is pure @nogc and nothrow?

Short answer: no.
Long answer: https://issues.dlang.org/show_bug.cgi?id=17628