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version 2.109.1

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core.time.Duration.toString - multiple declarations

Function Duration.toString

Converts this Duration to a string.

void toString(SinkT) (
  scope SinkT sink
) const scope;

The string is meant to be human readable, not machine parseable (e.g. whether there is an 's' on the end of the unit name usually depends on whether it's plural or not, and empty units are not included unless the Duration is zero). Any code needing a specific string format should use total or split to get the units needed to create the desired string format and create the string itself.

The format returned by toString may or may not change in the future.

Parameters

NameDescription
sink A sink object, expected to be a delegate or aggregate implementing opCall that accepts a scope const(char)[] as argument.

Function Duration.toString

Returns the total number of the given units in this Duration. So, unlike split, it does not strip out the larger units.

string toString() pure nothrow @safe const;

Example

writeln(dur!"weeks"(12).total!"weeks"); // 12
writeln(dur!"weeks"(12).total!"days"); // 84

writeln(dur!"days"(13).total!"weeks"); // 1
writeln(dur!"days"(13).total!"days"); // 13

writeln(dur!"hours"(49).total!"days"); // 2
writeln(dur!"hours"(49).total!"hours"); // 49

writeln(dur!"nsecs"(2007).total!"hnsecs"); // 20
writeln(dur!"nsecs"(2007).total!"nsecs"); // 2000

Example

writeln(Duration.zero.toString()); // "0 hnsecs"
writeln(weeks(5).toString()); // "5 weeks"
writeln(days(2).toString()); // "2 days"
writeln(hours(1).toString()); // "1 hour"
writeln(minutes(19).toString()); // "19 minutes"
writeln(seconds(42).toString()); // "42 secs"
writeln(msecs(42).toString()); // "42 ms"
writeln(usecs(27).toString()); // "27 μs"
writeln(hnsecs(5).toString()); // "5 hnsecs"

writeln(seconds(121).toString()); // "2 minutes and 1 sec"
assert((minutes(5) + seconds(3) + usecs(4)).toString() ==
       "5 minutes, 3 secs, and 4 μs");

writeln(seconds(-42).toString()); // "-42 secs"
writeln(usecs(-5239492).toString()); // "-5 secs, -239 ms, and -492 μs"

Authors

Jonathan M Davis and Kato Shoichi

License

Boost License 1.0.