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  2. Integer sorting - Wikipedia

    en.wikipedia.org/wiki/Integer_sorting

    Then, all of the buckets are concatenated together to form the output list. [12] Counting sort uses a table of counters in place of a table of buckets, to determine the number of items with each key. Then, a prefix sum computation is used to determine the range of positions in the sorted output at which the values with each key should be placed.

  3. 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.

  4. Regular expression - Wikipedia

    en.wikipedia.org/wiki/Regular_expression

    For example, . is a very general pattern, [a-z] (match all lower case letters from 'a' to 'z') is less general and b is a precise pattern (matches just 'b'). The metacharacter syntax is designed specifically to represent prescribed targets in a concise and flexible way to direct the automation of text processing of a variety of input data, in a ...

  5. Pre-preg - Wikipedia

    en.wikipedia.org/wiki/Pre-preg

    Pre-preg is a composite material made from "pre-impregnated" fibers and a partially cured polymer matrix, such as epoxy or phenolic resin, or even thermoplastic mixed with liquid rubbers or resins. [1] The fibers often take the form of a weave and the matrix is used to bond them together and to other components during manufacture.

  6. Decimal separator - Wikipedia

    en.wikipedia.org/wiki/Decimal_separator

    Fixed-form Fortran ignores whitespace (in all contexts), so 700 000 000 has always been accepted. Fortran 90 and its successors allow (ignored) underscores in numbers in free-form. C++14 , Rebol , and Red all allow the use of an apostrophe for digit grouping, so 700'000'000 is permissible.

  7. Coffin birth - Wikipedia

    en.wikipedia.org/wiki/Coffin_birth

    Coffin birth, also known as postmortem fetal extrusion, [1] [2] is the expulsion of a nonviable fetus through the vaginal opening of the decomposing body of a deceased pregnant woman due to increasing pressure from intra-abdominal gases.

  8. SQL injection - Wikipedia

    en.wikipedia.org/wiki/SQL_injection

    A classification of SQL injection attacking vector as of 2010. In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker).

  9. Array processing - Wikipedia

    en.wikipedia.org/wiki/Array_processing

    Array processing is a wide area of research in the field of signal processing that extends from the simplest form of 1 dimensional line arrays to 2 and 3 dimensional array geometries. Array structure can be defined as a set of sensors that are spatially separated, e.g. radio antenna and seismic arrays .