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  2. Leap year problem - Wikipedia

    en.wikipedia.org/wiki/Leap_year_problem

    The following JavaScript code is an example of a Category 2 leap year bug. It will work properly until dt becomes February 29, such as on 2020-02-29. Then it will attempt to set the year to 2021. Since 2021-02-29 doesn't exist, the Date object will roll forward to the next valid date, which is 2021-03-01. [5]

  3. Module:Citation/CS1/Date validation - Wikipedia

    en.wikipedia.org/wiki/Module:Citation/CS1/Date...

    The input table has: year, year2 – always present; if before 1582, ignore months and days if present month, month2 – 0 if not provided, 1-12 for months, 21-24 for seasons; 99 Christmas day, day2 – 0 if not provided, 1-31 for days the output table receives: rftdate: an ISO 8601 formatted date rftchron: a free-form version of the date ...

  4. PHP - Wikipedia

    en.wikipedia.org/wiki/PHP

    As of 21 January 2025 (two months after PHP 8.4's release), PHP is used as the server-side programming language on 75.0% of websites where the language could be determined; PHP 7 is the most used version of the language with 47.1% of websites using PHP being on that version, while 40.6% use PHP 8, 12.2% use PHP 5 and 0.1% use PHP 4.

  5. PHP serialization format - Wikipedia

    en.wikipedia.org/wiki/PHP_serialization_format

    The syntax generally follows the pattern of one-letter code of the variable type, followed by a colon and the length of the data, followed by the variable value, and ending with a semicolon. For the associative array, the format is <serialised key> ; <serialised value> , repeated for each association/pair in the array.

  6. Bad command or file name - Wikipedia

    en.wikipedia.org/wiki/Bad_command_or_file_name

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  7. cal (command) - Wikipedia

    en.wikipedia.org/wiki/Cal_(command)

    "An unusual calendar is printed for September 1752. That is the month when 11 days were skipped to make up for lack of leap year adjustments." [3] The Plan 9 from Bell Labs manual states: "Try cal sep 1752." Date of adoption of the reform differs widely between countries so, for some users, this feature may

  8. x86-64 - Wikipedia

    en.wikipedia.org/wiki/X86-64

    macOS uses the universal binary format to package 32- and 64-bit versions of application and library code into a single file; the most appropriate version is automatically selected at load time. In Mac OS X 10.6, the universal binary format is also used for the kernel and for those kernel extensions that support both 32-bit and 64-bit kernels.

  9. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    FF F2: ÿû ÿó ÿò: 0 mp3 MPEG-1 Layer 3 file without an ID3 tag or with an ID3v1 tag (which is appended at the end of the file) 49 44 33: ID3: 0 mp3 MP3 file with an ID3v2 container 42 4D: BM: 0 bmp dib BMP file, a bitmap format used mostly in the Windows world 43 44 30 30 31: CD001: 0x8001 0x8801 0x9001 iso ISO9660 CD/DVD image file [40 ...