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Git pull without checkout?
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Count number of matches of a regex in Javascript
... || []).length; // 0
(('a a a').match(/a/g) || []).length; // 3
Based on https://stackoverflow.com/a/48195124/16777 but fixed to actually work in zero-results case.
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Check if string matches pattern
...ring while re.search() will match a pattern anywhere in string. (See also: https://docs.python.org/library/re.html#search-vs-match)
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Database Structure for Tree Data Structure
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You mention the most commonly implemented, which is Adjacency List:
https://blogs.msdn.microsoft.com/mvpawardprogram/2012/06/25/hierarchies-convert-adjacency-list-to-nested-sets
There are other models as well, including materialized path and nested sets:
http://communities.bmc.com/communitie...
Compare DATETIME and DATE ignoring time portion
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Case statement with multiple values in each 'when' block
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Python - abs vs fabs
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Why is the JVM stack-based and the Dalvik VM register-based?
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SQL how to increase or decrease one for a int column in one command
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delete_all vs destroy_all?
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