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When it is desired to associate a numeric value with the result of a comparison between two data items, say a and b, the usual convention is to assign −1 if a < b, 0 if a = b and 1 if a > b. For example, the C function strcmp performs a three-way comparison and returns −1, 0, or 1 according to this convention, and qsort expects the ...
The relational algebra uses set union, set difference, and Cartesian product from set theory, and adds additional constraints to these operators to create new ones.. For set union and set difference, the two relations involved must be union-compatible—that is, the two relations must have the same set of attributes.
SQL*Plus; Underscore. AutoIt; Cobra; Visual Basic; Xojo; Ellipsis (three dots) MATLAB: The ellipsis need not end the line, but text following it is ignored. [5] It begins a comment that extends through (including) the first subsequent newline. Contrast this with a line comment which extends until the next newline. Comma delimiter. Ruby: comment ...
Addition of a pair of two's-complement integers is the same as addition of a pair of unsigned numbers (except for detection of overflow, if that is done); the same is true for subtraction and even for N lowest significant bits of a product (value of multiplication). For instance, a two's-complement addition of 127 and −128 gives the same ...
Some compiled languages such as Ada and Fortran, and some scripting languages such as IDL, MATLAB, and S-Lang, have native support for vectorized operations on arrays. For example, to perform an element by element sum of two arrays, a and b to produce a third c, it is only necessary to write c = a + b
Corrections & clarifications: A previous version of this report gave an incorrect full name for The Amazing Kreskin. George Kresge Jr., better known by his stage name The Amazing Kreskin, has died ...
A descendant of one of Jack the Ripper's victims has demanded a new inquest into one of history's most notorious serial killers, after DNA evidence suggested the murderer was a Polish barber. The ...
He finished with 109 yards on 12-for-24 passing with two touchdowns and two interceptions. Taylor rushed for 96 yards on 25 carries and caught a 7-yard TD pass, while Michael Pittman Jr. had five ...