Setting a list of values

[Ali Çehreli via Digitalmars-d-learn]

On 04/30/2016 10:05 PM, Joel wrote:
 > This has no effect:
 > _bars.each!(a => { a._plots.fillColor = Color(255, 180, 0); });

This is a common issue especially for people who know lambdas from other 
languages. :)

Your lambda does not do any work. Rather, your lambda returns another 
lambda, which is promptly ignored:

import std.stdio;
import std.algorithm;

void main() {
     auto arr = [ 1, 2 ];
     arr.each!(a => { writeln(a); });  // returns lambda for each a
}

The lambda that 'each' takes above is "given a, produce this lambda". . 
To do the intended work, you need to remove the curly braces (and the 
semicolon):

     arr.each!(a => writeln(a));

Or, you could insert empty () to call the returned lambda but that would 
completely be extra work in this case:

     arr.each!(a => { writeln(a); }());

Ali