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Enum member std.traits.isNumeric
Detect whether T
is a built-in numeric type (integral or floating
point).
enum isNumeric(T)
= false;
Example
static assert(
isNumeric!byte &&
isNumeric!short &&
isNumeric!int &&
isNumeric!long &&
isNumeric!float &&
isNumeric!double &&
isNumeric!real &&
isNumeric!(const(real)) &&
isNumeric!(immutable(real))
);
static assert(
!isNumeric!void &&
!isNumeric!bool &&
!isNumeric!char &&
!isNumeric!wchar &&
!isNumeric!dchar
);
// types which act as numeric values do not pass
struct S
{
int val;
alias val this;
}
static assert(!isNumeric!S);
Authors
Walter Bright,
Tomasz Stachowiak (isExpressions
),
Andrei Alexandrescu,
Shin Fujishiro,
Robert Clipsham,
David Nadlinger,
Kenji Hara,
Shoichi Kato
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.