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The #ifexist function selects one of two alternatives depending on whether a page exists at the specified title. {{#ifexist: page title | value if page exists | value if page doesn't exist }} The page can be in any namespace , so it can be an article or "content page", an image or other media file, a category, etc.
The template {{}} allows a 1-column, 2-column, 3-column or more table of events to be added to an article describing events over time.The template allows the easy addition of date-stamped events, and the easy addition or insertion or removal of events as the article evolves over time without editors having to worry about table syntax, adjusting and balancing rows or columns, etc.
A basis of the LP is a nonsingular submatrix of A, with all m rows and only m<n columns. Sometimes, the term basis is used not for the submatrix itself, but for the set of indices of its columns. Let B be a subset of m indices from {1,...,n}. Denote by the square m-by-m matrix made of the m columns of indexed by B.
In a database, a table is a collection of related data organized in table format; consisting of columns and rows.. In relational databases, and flat file databases, a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows, the cell being the unit where a row and column intersect. [1]
PHP has hundreds of base functions and thousands more from extensions. Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [35]
SELECT * FROM (SELECT ROW_NUMBER OVER (ORDER BY sort_key ASC) AS row_number, columns FROM tablename) AS foo WHERE row_number <= 10 ROW_NUMBER can be non-deterministic : if sort_key is not unique, each time you run the query it is possible to get different row numbers assigned to any rows where sort_key is the same.
The idea of their solution is to guess the indexes of rows containing the leftmost and rightmost cells of the shape to be reconstructed, and then to set up a 2-satisfiability problem that tests whether there exists a shape consistent with these guesses and with the given row and column sums. They use four 2-satisfiability variables for each ...
Column-Number: A column-number constraint set contains all the possibilities for a particular column and number. For example, the constraint set for column 1 and number 1, which can be labeled C1#1, contains the 9 possibilities for column 1 and number 1 but different rows: