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What is the difference between square brackets and parentheses in a regex?
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These regexes are equivalent (for matching purposes):
/^(7|8|9)\d{9}$/
/^[789]\d{9}$/
/^[7-9]...
Why `null >= 0 && null
...al.Panos Kal.
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updating table rows in postgres using subquery
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How to calculate a logistic sigmoid function in Python?
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edited Apr 27 '15 at 7:43
answered Oct 21 '10 at 8:37
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How to use Git Revert
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– Eklavyaa
Jul 30 '19 at 5:27
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space between divs - display table-cell
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Need to understand the usage of SemaphoreSlim
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ServyServy
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How do I select a merge strategy for a git rebase?
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Elijah Lynn
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answered Nov 25 '10 at 3:11
iCrazyiCrazy
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Build vs new in Rails 3
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How to make an app's background image repeat
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Muhammad MubashirMuhammad Mubashir
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