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  2. Regular expression - Wikipedia

    en.wikipedia.org/wiki/Regular_expression

    The general problem of matching any number of backreferences is NP-complete, and the execution time for known algorithms grows exponentially by the number of backreference groups used. [ 45 ] However, many tools, libraries, and engines that provide such constructions still use the term regular expression for their patterns.

  3. Help:Table - Wikipedia

    en.wikipedia.org/wiki/Help:Table

    To force initial column widths to specific requirements, rather than accepting the width of the widest text element in a column's cells, follow this example. Note that wrap-around of text is forced for columns where the width requires it. Do not use min-width:Xpx;

  4. Pattern matching - Wikipedia

    en.wikipedia.org/wiki/Pattern_matching

    This single element must be the first. The empty list would not match the pattern at all, as an empty list does not have a head (the first element that is constructed). In the example, we have no use for list, so we can disregard it, and thus write the function:

  5. Comparison of programming languages (string functions ...

    en.wikipedia.org/wiki/Comparison_of_programming...

    String functions are used in computer programming languages to manipulate a string or query information about a string (some do both).. Most programming languages that have a string datatype will have some string functions although there may be other low-level ways within each language to handle strings directly.

  6. Data cleansing - Wikipedia

    en.wikipedia.org/wiki/Data_cleansing

    For example, appending addresses with any phone numbers related to that address. Data cleansing may also involve harmonization (or normalization) of data, which is the process of bringing together data of "varying file formats, naming conventions, and columns", [ 2 ] and transforming it into one cohesive data set; a simple example is the ...

  7. Language Integrated Query - Wikipedia

    en.wikipedia.org/wiki/Language_Integrated_Query

    The mapping is done by defining classes that correspond to the tables in the database, and containing all or a subset of the columns in the table as data members. [13] The correspondence, along with other relational model attributes such as primary keys, are specified using LINQ to SQL-defined attributes. For example,

  8. Sinclair BASIC - Wikipedia

    en.wikipedia.org/wiki/Sinclair_BASIC

    Returns the arcsine of number [19] AT: line, column; SYMBOL SHIFT+I: Other Used in a PRINT statement to print at the line and column specified; [20] for example, PRINT AT 5,10;"*" puts a star in column 10 of line 5. ATN: number: EXTENDED MODE then SYMBOL SHIFT+E: Function Returns the arctangent of number [17] ATTR (line, column) EXTENDED MODE ...

  9. Programming style - Wikipedia

    en.wikipedia.org/wiki/Programming_style

    Haskell, like Python, has the off-side rule. It has a two-dimension syntax where indenting is meaningful to define blocks (although, an alternate syntax uses curly braces and semicolons). Haskell is a declarative language, there are statements, but declarations within a Haskell script. Example: