On Friday, 30 June 2017 at 07:44:45 UTC, Martin Tschierschke
wrote:
What do I have to do, to make this work?
iota(number).each!...command_x(a...);command_y(b...);command_z(c..))
^^^^^?
how to write the lambda?
Similar to the ruby (1..number).each{ commands...}
Don't want to write the following, because the index i is not
used inside the loop
and this should be clear when reading it:
for (i=0;i<number;i++){commands...}
or
foreach(i;iota(number)){commands...}
You can use it like this:
iota(10).each!((x) { command1(); command2(); ... });
Or there is a short syntax (lambda):
iota(10).each!((x) => command1());
See http://dlang.org/spec/expression.html#Lambda for more info
about lambdas.
Or is there something like number.times!{....} possible?
You can write your own function. It is simple.
void times(alias fun)(size_t i) {
foreach(unused;0..i)
fun();
}
and use it like this:
10.times!({ writeln("yaaay"); });