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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some ...

  3. Foreach loop - Wikipedia

    en.wikipedia.org/wiki/Foreach_loop

    myArray. forEach (function (item, index) {// Do stuff with item and index // The index variable can be omitted from the parameter list if not needed}); The ECMAScript 6 standard introduced a more conventional for..of syntax that works on all iterables rather than operating on only array instances.

  4. Help:Table - Wikipedia

    en.wikipedia.org/wiki/Help:Table

    Phabricator request for floating table headers; tabulate, Python module for converting data structures to wiki table markup; wikitables, Python module for reading wiki table markup; H63: Using the scope attribute to associate header cells and data cells in data tables | Techniques for WCAG 2.0. Tables | Usability & Web Accessibility. Yale ...

  5. While loop - Wikipedia

    en.wikipedia.org/wiki/While_loop

    The repeat statement repetitively executes a block of one or more statements through an until statement and continues repeating unless the condition is false. The main difference between the two is the while loop may execute zero times if the condition is initially false, the repeat-until loop always executes at least once.

  6. Database index - Wikipedia

    en.wikipedia.org/wiki/Database_index

    Indexes are useful for many applications but come with some limitations. Consider the following SQL statement: SELECT first_name FROM people WHERE last_name = 'Smith';. To process this statement without an index the database software must look at the last_name column on every row in the table (this is known as a full table scan).

  7. Expression index - Wikipedia

    en.wikipedia.org/wiki/Expression_index

    This allows indexes to be defined for common query conditions that depend on data in a table, but are not actually stored in that table. A common use for an expression index is to support case-insensitive searching or constraints. For example, if a web site wants to make user names case-insensitive, but still preserve the case as originally ...

  8. Sorting algorithm - Wikipedia

    en.wikipedia.org/wiki/Sorting_algorithm

    One way to work around this problem, which works well when complex records (such as in a relational database) are being sorted by a relatively small key field, is to create an index into the array and then sort the index, rather than the entire array. (A sorted version of the entire array can then be produced with one pass, reading from the ...

  9. Help:Table/Advanced - Wikipedia

    en.wikipedia.org/wiki/Help:Table/Advanced

    Normally, copying and pasting columns or rows removes the inline CSS styling such as cell colors. There is a way to break up a table (a too-wide table for example) into more tables without losing all the background colors, and other inline styling. Copy the table to 2 sandboxes (or one sandbox, and in the article itself).