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Reset all changes after last commit in git
...the last commit, including deleting added files, resetting modified files, and adding back deleted files?
3 Answers
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Sleep in JavaScript - delay between actions
...pdates, keeping some internal state, or whatever).
– Anders Sandvig
Feb 10 '10 at 8:28
5
This doe...
How do I concatenate two lists in Python?
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does this create a deep copy of listone and appends listtwo?
– Daniel F
Apr 19 '12 at 12:34
160
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What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
I developed some javascript enhanced pages that run fine on recent Firefox and Safari. I missed to check in Internet Explorer, and now I find the pages don't work on IE 6 and 7 (so far). The scripts are somehow not executed, the pages show as if javascript wasn't there, although some javascript is e...
Detect if device is iOS
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Detecting iOS
With iOS 13 iPad both User agent and platform strings are changed and differentiating between iPad and MacOS seems possible, so all answers below needs to take that into account now.
This might be the shortest alternative that also covers iOS 13:
function iO...
How do I convert datetime to ISO 8601 in PHP
...at: ±[hh]:[mm], ±[hh][mm], or ±[hh].
But note that, +0X:00 is correct, and +0X00 is incorrect for extended usage. So it's better to use date("c"). A similar discussion here.
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How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
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If you're using Node.js, you're sure to have EcmaScript 5, and so Date has a toISOString method. You're asking for a slight modification of ISO8601:
new Date().toISOString()
> '2012-11-04T14:51:06.157Z'
So just cut a few things out, and you're set:
new Date().toISOString().
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Replace whole line containing a string using Sed
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You can use the change command to replace the entire line, and the -i flag to make the changes in-place. For example, using GNU sed:
sed -i '/TEXT_TO_BE_REPLACED/c\This line is removed by the admin.' /tmp/foo
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Javascript Thousand Separator / string format [duplicate]
Is there any function in Javascript for formatting number and strings ?
15 Answers
15
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Postgres: INSERT if does not exist already
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Postgres 9.5 (released since 2016-01-07) offers an "upsert" command, also known as an ON CONFLICT clause to INSERT:
INSERT ... ON CONFLICT DO NOTHING/UPDATE
It solves many of the subtle problems you can run into when using concurrent operation, which some other answers propose.
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