Too complicated code for generating a random string?

[Jens Mueller]

Hi,

I'd like to sample with replacement. But found no simple way.
In particular I want to generate a random string of given letters, say
std.ascii.letters.

Anybody a simpler version than

auto randomString = repeat('a').take(10).map!(c => randomSample(letters, 1, 
letters.length))().joiner();

?

Jens