D has a built in hashed associative container, which is great.
I've noticed though it has no built-in "hashed container" for
when you just need to store unique elements, but without any
specific data associated (lists of names, for example).
Has anybody requested this before? Would there be any plans for
it?
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The current "workaround" is to just dummy it.
alias bool Dummy;
Dummy[string] names;
names["Paul"] = true; //Ew.
But it is not very obvious what is going on. I also tried
"void"ing it, eg:
void[string] names;
But that doesn't work either: Error: can't have associative array
of void.
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What would you think of introducing a built-in hashed container,
that contains only keys?
We could call them "HA" for Hashed Array, and declare them with
this simple syntax:
[string] names;
he interface would be mostly the already existing functions of AA
(".remove", "in", "rehash()"), plus ".insert" to insert a key.
Thoughts?
