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Enum member std.datetime.date.isTimePoint
Whether the given type defines all of the necessary functions for it to function as a time point.
enum isTimePoint(T)
= hasMin && hasMax && hasOverloadedOpBinaryWithDuration && hasOverloadedOpAssignWithDuration && hasOverloadedOpBinaryWithSelf && !is(U == Duration);
1. T
must define a static property named min
which is the smallest
value of T
as Unqual!T
.
2. T
must define a static property named max
which is the largest
value of T
as Unqual!T
.
3. T
must define an opBinary
for addition and subtraction that
accepts Duration
and returns Unqual!T
.
4. T
must define an opOpAssign
for addition and subtraction that
accepts Duration
and returns ref Unqual!T
.
5. T
must define a opBinary
for subtraction which accepts T
and returns Duration
.
Example
import core .time : Duration;
import std .datetime .interval : Interval;
import std .datetime .systime : SysTime;
static assert(isTimePoint!Date);
static assert(isTimePoint!DateTime);
static assert(isTimePoint!SysTime);
static assert(isTimePoint!TimeOfDay);
static assert(!isTimePoint!int);
static assert(!isTimePoint!Duration);
static assert(!isTimePoint!(Interval!SysTime));
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License
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