Convert integer to smartstring

[douglas-raillard-arm]

Hi,

I was trying to efficiently convert an integer to a smartstring (actually, I want to append it at the end of a smartstring). String has the ToString trait so you can just mystr.push_str(43.to_string()), but there does not seem to be any equivalent for smartstring, unless you convert String to smartstring (but this would allocate then free which would be a perf issue for me).

Any recommendation on how to proceed ?

[schungx]

It might be difficult to avoid allocation because the text you want to write into the string may push the string over its inline limit.

[douglas-raillard-arm]

Actually I realized I can use write!() macro to format the number in the smartstring.

It might be difficult to avoid allocation

I meant that I don't want a forced allocation on the typical path (numbers < 64, fixed string prefix of 8 char). Allocating if there is a functional need is ok.

[schungx]

Actually I realized I can use write!() macro to format the number in the smartstring.

Great deal. I didn't know that!