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version 2.109.1

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std.datetime.date.enforceValid - multiple declarations

Function enforceValid

void enforceValid(string units) (
  int value,
  string file = __FILE__,
  size_t line = __LINE__
) pure @safe
if (units == "months" || units == "hours" || units == "minutes" || units == "seconds");

Parameters

NameDescription
units The units of time to validate.
value The number to validate.
file The file that the DateTimeException will list if thrown.
line The line number that the DateTimeException will list if thrown.

Throws

DateTimeException if valid!units(value) is false.

Example

import std.exception : assertThrown, assertNotThrown;

assertNotThrown(enforceValid!"months"(10));
assertNotThrown(enforceValid!"seconds"(40));

assertThrown!DateTimeException(enforceValid!"months"(0));
assertThrown!DateTimeException(enforceValid!"hours"(24));
assertThrown!DateTimeException(enforceValid!"minutes"(60));
assertThrown!DateTimeException(enforceValid!"seconds"(60));

Function enforceValid

Because the validity of the day number depends on both on the year and month of which the day is occurring, take all three variables to validate the day.

void enforceValid(string units) (
  int year,
  Month month,
  int day,
  string file = __FILE__,
  size_t line = __LINE__
) pure @safe
if (units == "days");

Parameters

NameDescription
units The units of time to validate.
year The year of the day to validate.
month The month of the day to validate.
day The day to validate.
file The file that the DateTimeException will list if thrown.
line The line number that the DateTimeException will list if thrown.

Throws

DateTimeException if valid!"days"(year, month, day) is false.

Example

import std.exception : assertThrown, assertNotThrown;

assertNotThrown(enforceValid!"days"(2000, Month.jan, 1));
// leap year
assertNotThrown(enforceValid!"days"(2000, Month.feb, 29));

assertThrown!DateTimeException(enforceValid!"days"(2001, Month.feb, 29));
assertThrown!DateTimeException(enforceValid!"days"(2000, Month.jan, 32));
assertThrown!DateTimeException(enforceValid!"days"(2000, Month.apr, 31));

Authors

Jonathan M Davis

License

Boost License 1.0.