On Thursday, 19 January 2017 at 08:06:04 UTC, ketmar wrote:
alias is not a macro, it is alias to *symbol*. only symbol, not
any arbitrary expression.
In fact, it can nowadays be. You just have to mark it so, with a
lambda:
void main()
{ import std.stdio;
auto myArray = [2, 3, 5, 6];
int k = 2;
alias a = () => myArray[k];
writeln(a());
k = 3;
writeln(a());
}
//result:
//5
//6
The downside with this (and function pointers and delegates)
compared to defining functions is that you cannot call it without
parenthesis.
