Am 16.05.2013 10:01, schrieb deadalnix:
On Thursday, 16 May 2013 at 07:53:08 UTC, TommiT wrote:
I'd like to make it easier to initialize function local
immutable/const data. Here's the type of problem I'd like to
alleviate:
const string[100] int__str;
const int[string] str__int;
for (int i = 0; i < 100; ++i)
{
auto str = to!string(i);
int__str[i] = str; // ERROR: Can't modify const
str__int[str] = i; // ERROR: Can't modify const
}
In short, I want to initialize two different const variables at
once (in the same loop or other block). If I needed to
initialize only one const variable, I could use a lambda:
const string[100] int__str = {
string[100] tmp;
// ... init tmp ...
return tmp;
}();
This is easy to work around that using a mutable data, construct
it and then copy it to a const one.
You my argue that this is slower, and I answer you : maybe. Can
you show what does GDC or LDC output doing so ?
or even better - make them members of an helper class, with lookup
methods and initialzation in ctor and put that into an const ref
