This is Python 2.6.6 code (shell):

>>> items = [1, 7, 22]
>>> all(x % 2 for x in items)
False
>>> items = [1, 7, 21]
>>> all(x % 2 for x in items)
True


The functions all() and any() are very handy.

With Phobos of DMD 2.051 if you want to translate that Python code to a D2 functional style you need something like:


import std.algorithm;
void main() {
    auto items = [1, 7, 22];
    bool r1 = reduce!q{a && b}(true, map!q{a % 2}(items));
    assert(!r1);
    items = [1, 7, 21];
    bool r2 = reduce!q{a && b}(true, map!q{a % 2}(items));
    assert(r2);
}


While using an all() it becomes shorter and more readable, something like (untested):

import std.algorithm;
void main() {
    auto items = [1, 7, 22];
    bool r1 = all!q{a % 2}(items);
    assert(!r1);
    items = [1, 7, 21];
    bool r2 = all!q{a % 2}(items);
    assert(r2);
}