Array Operations question

[bearophile via Digitalmars-d-learn]

Márcio Martins:

> float[10] a;
> a[] = uniform(0.0f, 1.0f);
>
> This is going to set all values to the result of a single call 
> to uniform();
>
> Is there a way to express my intent that I want one result per 
> array element?

Currently D array operations can't be used for that kind of 
usage. So you have to use a normal foreach loop:

void main() {
     import std.stdio, std.random;

     float[10] a;

     foreach (ref x; a)
         x = uniform01;

     a.writeln;
}


Or you can also use ranges, in a functional style:


void main() {
     import std.stdio, std.range, std.random, std.algorithm;

     float[10] a;

     a
     .length
     .iota
     .map!(_ => uniform01)
     .copy(a[]);

     a.writeln;
}

Bye,
bearophile