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? matches the preceding character or group exactly zero or one times. { } match the preceding character or group a fixed number of times. For example, insource:/[a-z]{2}/ matches exactly 2 lowercase letters in a row. insource:/[a-z]{2,4}/ matches any string of 2, 3, or 4 lowercase letters.
Constructing the DFA for a regular expression of size m has the time and memory cost of O(2 m), but it can be run on a string of size n in time O(n). Note that the size of the expression is the size after abbreviations, such as numeric quantifiers, have been expanded.
This article contains two charts: The first chart is a list of the top 50 all-time scorers in the history of the National Basketball Association (NBA). The list includes only points scored in regular season games. The second chart is a progressive list of the leading all-time NBA scorers. [1] LeBron James is the leading scorer in NBA history.
Some regular expressions that may help working with the tz database data . If performed in this order, it will convert +- to NSEW search ^- replace S search ^+ replace N search - replace W search + replace E
Mocha is a JavaScript test framework for Node.js programs, featuring browser support, asynchronous testing, test coverage reports, and use of any assertion library. [ 2 ] Assertion libraries
In music a time point or timepoint (point in time) is "an instant, analogous to a geometrical point in space". [1] Because it has no duration, it literally cannot be heard, [2] but it may be used to represent "the point of initiation of a single pitch, the repetition of a pitch, or a pitch simultaneity", [3] therefore the beginning of a sound, rather than its duration.
The transpose (indicated by T) of any row vector is a column vector, and the transpose of any column vector is a row vector: […] = [] and [] = […]. The set of all row vectors with n entries in a given field (such as the real numbers ) forms an n -dimensional vector space ; similarly, the set of all column vectors with m entries forms an m ...
The binary logical operators returned a Boolean value in early versions of JavaScript, but now they return one of the operands instead. The left–operand is returned, if it can be evaluated as : false, in the case of conjunction: (a && b), or true, in the case of disjunction: (a || b); otherwise the right–operand is returned. Automatic type ...