OCLOperators tryParse
(Created page with "The tryParse operator converts a string representation of a date and time to its DateTime equivalent and returns null if the string is not valid date and or time. The string to be parsed can be in any of the following forms, * A string with a date and a time component. * A string with a date but no time component. If the time component is absent, the method assumes 12:00 midnight. If the date component has a two-digit year, it is converted to a year based on the Calen...")
 
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The tryParse operator converts a string representation of a date and time to its DateTime equivalent and returns null if the string is not valid date and or time.
The tryParse operator converts a string representation of a date and time to its DateTime equivalent. Null is returned  if the string is an invalid date and/or time.


The string to be parsed can be in any of the following forms:


The string to be parsed can be in any of the following forms,
* A string with a date and a time component.
{| class="wikitable"
!OCL
!Result
|-
|'08/18/2018 07:22:16'.tryParse(<nowiki>''</nowiki>)
|8/18/2018 07:22:16 AM
|}
*A string with a date but no time component. If the time component is absent, the method assumes 12:00 midnight. If the date component has a two-digit year, it is converted to a year based on the Calendar.
{| class="wikitable"
!OCL
!Result
|-
| <nowiki>'08/18/2018'.tryParse(''</nowiki>)
| 8/18/2018 12:00:00 AM
|}
*A string with a date component that includes only the month and the year but no day component. The method assumes the first day of the month.
{| class="wikitable"
!OCL
!Result
|-
|<nowiki>'8/2018'.tryParse(''</nowiki>)
| 8/1/2018 12:00:00 AM
|}
*A string with a date component that includes only the month and the day but no year component. The method assumes the current year.
{| class="wikitable"
!OCL
!Result
|-
| <nowiki>'8/18'.tryParse(''</nowiki>)
|8/18/2024 12:00:00 AM
|}
 
* A string with a time but no date component. The method assumes the current date.
 
{| class="wikitable"
!OCL
!Result
|-
| '07:22:16'.tryParse(<nowiki>''</nowiki>)
|8/18/2024 7:22:16 AM
|}


* A string with a date and a time component.
* A string with a date but no time component. If the time component is absent, the method assumes 12:00 midnight. If the date component has a two-digit year, it is converted to a year based on the Calendar.
* A string with a date component that includes only the month and the year but no day component. The method assumes the first day of the month.
* A string with a date component that includes only the month and the day but no year component. The method assumes the current year.
* A string with a time but no date component.
* A string with a time component that includes only the hour and an AM/PM designator, with no date component. The method assumes the current date and a time with no minutes and no seconds.
* A string with a time component that includes only the hour and an AM/PM designator, with no date component. The method assumes the current date and a time with no minutes and no seconds.
{| class="wikitable"
!OCL
!Result
|-
| <nowiki>'7 PM'.tryParse(''</nowiki>)
|8/18/2024 7:00:00 PM
|}
* A string that includes time zone information and conforms to ISO 8601. In the following examples, the first string designates Coordinated Universal Time (UTC), and the second designates the time in a time zone that's seven hours earlier than UTC: "2008-11-01T19:35:00.0000000Z" "2008-11-01T19:35:00.0000000-07:00"
* A string that includes time zone information and conforms to ISO 8601. In the following examples, the first string designates Coordinated Universal Time (UTC), and the second designates the time in a time zone that's seven hours earlier than UTC: "2008-11-01T19:35:00.0000000Z" "2008-11-01T19:35:00.0000000-07:00"
* A string that includes the GMT designator and conforms to the <nowiki>RFC 1123</nowiki> time format; for example:  "Sat, 01 Nov 2008 19:35:00 GMT"
 
* A string that includes the date and time along with time zone offset information; for example:  "03/01/2009 05:42:00 -5:00"
{| class="wikitable"
!OCL
!Result
|-
| '2018-08-18T07:22:16.0000000Z'.tryParse(<nowiki>''</nowiki>)
|8/18/2018 10:22: 16 AM
|-
|'2018-08-18T07:22:16.0000000-07:00'.tryParse(<nowiki>''</nowiki>)
|8/18/2018 5:22:16 PM
|}
 
* A string that includes the GMT designator and conforms to the <nowiki>RFC 1123</nowiki> time format - for example:  "Sat, 01 Nov 2008 19:35:00 GMT"
{| class="wikitable"
!OCL
!Result
|-
| 'Sat, 18 Aug 2018 07:22:16 GMT'.tryParse(<nowiki>''</nowiki>)
|8/18/2018 10:22:16 AM
|}
 
* A string that includes the date and time along with time zone offset information - for example:  "03/01/2009 05:42:00 -5:00"
 
{| class="wikitable"
!OCL
!Result
|-
| '08/18/2018 07:22:16 -5:00'.tryParse(<nowiki>''</nowiki>)
|8/18/2018 3:22:16 PM
|}

Latest revision as of 05:20, 19 August 2024

The tryParse operator converts a string representation of a date and time to its DateTime equivalent. Null is returned if the string is an invalid date and/or time.

The string to be parsed can be in any of the following forms:

  • A string with a date and a time component.
OCL Result
'08/18/2018 07:22:16'.tryParse('') 8/18/2018 07:22:16 AM
  • A string with a date but no time component. If the time component is absent, the method assumes 12:00 midnight. If the date component has a two-digit year, it is converted to a year based on the Calendar.
OCL Result
'08/18/2018'.tryParse('') 8/18/2018 12:00:00 AM
  • A string with a date component that includes only the month and the year but no day component. The method assumes the first day of the month.
OCL Result
'8/2018'.tryParse('') 8/1/2018 12:00:00 AM
  • A string with a date component that includes only the month and the day but no year component. The method assumes the current year.
OCL Result
'8/18'.tryParse('') 8/18/2024 12:00:00 AM
  • A string with a time but no date component. The method assumes the current date.
OCL Result
'07:22:16'.tryParse('') 8/18/2024 7:22:16 AM
  • A string with a time component that includes only the hour and an AM/PM designator, with no date component. The method assumes the current date and a time with no minutes and no seconds.
OCL Result
'7 PM'.tryParse('') 8/18/2024 7:00:00 PM
  • A string that includes time zone information and conforms to ISO 8601. In the following examples, the first string designates Coordinated Universal Time (UTC), and the second designates the time in a time zone that's seven hours earlier than UTC: "2008-11-01T19:35:00.0000000Z" "2008-11-01T19:35:00.0000000-07:00"
OCL Result
'2018-08-18T07:22:16.0000000Z'.tryParse('') 8/18/2018 10:22: 16 AM
'2018-08-18T07:22:16.0000000-07:00'.tryParse('') 8/18/2018 5:22:16 PM
  • A string that includes the GMT designator and conforms to the RFC 1123 time format - for example: "Sat, 01 Nov 2008 19:35:00 GMT"
OCL Result
'Sat, 18 Aug 2018 07:22:16 GMT'.tryParse('') 8/18/2018 10:22:16 AM
  • A string that includes the date and time along with time zone offset information - for example: "03/01/2009 05:42:00 -5:00"
OCL Result
'08/18/2018 07:22:16 -5:00'.tryParse('') 8/18/2018 3:22:16 PM
This page was edited 32 days ago on 08/19/2024. What links here
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