On Thursday, 19 January 2017 at 07:48:03 UTC, Jot wrote:
alias a = myarray[k];
fails
myarray is a multidimensial array that I want to reduce writing
it every time but D complains that it can't alias it.
I simply want it to do a direct substitution, nothing fancy,
just to reducing typing.
alias is not a macro, it is alias to *symbol*. only symbol, not
any arbitrary expression.
if you want to reduce typing, consider, for example, moving your
code to nested function and pass `myarray[k]` as ref arg to it.
like:
void processArray (int[] myarray) {
void doSomething (ref int a) {
if (a == 0) a = 42; else a += 69;
}
foreach (immutable k; 0..myarray.length) {
if (k%3 == 0 || k%5 == 0) doSomething(myarray[k]);
}
}
