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Enum std.range.primitives.member isOutputRange
Returns true if R is an output range for elements of type
E. An output range is defined functionally as a range that
supports the operation put(r, e)
Declaration
enum isOutputRange(R, E) = is(typeof((inout int = 0)
{
R r = R.init;
E e = E.init;
put(r, e);
}
));
Example
void myprint(in char[] s) { }
static assert(isOutputRange!(typeof(&myprint), char));
static assert(!isOutputRange!(char[], char));
static assert( isOutputRange!(dchar[], wchar));
static assert( isOutputRange!(dchar[], dchar));
Authors
Andrei Alexandrescu, David Simcha, and Jonathan M Davis. Credit for some of the ideas in building this module goes to Leonardo Maffi.