Re: 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