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Function std.range.primitives.empty
Implements the range interface primitive empty
for types that
obey hasLength
property and for narrow strings. Due to the
fact that nonmember functions can be called with the first argument
using the dot notation, a
is equivalent to empty(a)
.
bool empty(T)
(
auto scope ref T a
) @property
if (is(typeof(a .length) : size_t));
Example
auto a = [ 1, 2, 3 ];
assert(!a .empty);
assert(a[3 .. $] .empty);
int[string] b;
assert(b .empty);
b["zero"] = 0;
assert(!b .empty);
Authors
Andrei Alexandrescu, David Simcha, and Jonathan M Davis. Credit for some of the ideas in building this module goes to Leonardo Maffi.
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.