Re: Turn GC allocated string into a scoped heap allocation

[Steven Schveighoffer via Digitalmars-d-learn]

On 12/13/18 4:38 AM, Per Nordlöw wrote:
How do I turn the GC-allocation in toLower() to a scoped heap allocation 
together with toLowerInPlace() in

void f(const scope const(char)[] expr)
{
     import std.uni : toLower;
     loweredExpr = toLower(expr); // temporary
     // use loweredExpr as key in hash table
}

when `loweredExpr` is used as a temporary inside `f`?

If you use loweredExpr as a key in a builtin AA, then you need to make 
it a heap allocation, because the GC cleans up AAs.

-Steve