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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
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Minor update: brew now also has the option to use brew services stop postgresql and brew services start postgresql instead of directly calling launchctl unload and launchctl load.
– florish
Mar 1 '17 at 15...
java.util.Date to XMLGregorianCalendar
...ld question. The classes mentioned, Date and XMLGregorianCalendar, are old now. I challenge the use of them and offer alternatives.
Date was always poorly designed and is more than 20 years old. This is simple: don’t use it.
XMLGregorianCalendar is old too and has an old-fashioned design. As I u...
How do I git rebase the first commit?
I used git init to create a fresh repo, then made three commits. Now I want to rebase to go back and amend my first commit, but if I do git rebase -i HEAD~3 it complains! If I try the same with HEAD~2 then it kinda works but only lets me rearrange the last two commits.
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jQuery loop over JSON result from AJAX Success?
...on(data) {
jQuery.each(data, function(index, item) {
//now you can access properties using dot notation
});
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("some error");
}
});
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ansible: lineinfile for several lines?
... This was probably voted up before Ansible 2.0. A better answer is now: stackoverflow.com/a/28306576/972128
– kkurian
Jul 5 '17 at 20:10
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How to drop a PostgreSQL database if there are active connections to it?
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OK. Now I understand, that was a typo. Thanks!
– jb.
Dec 11 '13 at 9:53
2
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Why git can't do hard/soft resets by path?
...set the index and the working tree to HEAD.
I think it should be clear by now why this operation is not for specific files by its nature - it is intended to move a branch head in the first place, resetting the working tree and the index is secondary functionality.
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Include jQuery in the JavaScript Console
...xample, on a website I would like to get the number of rows in a table. I know this is really easy with jQuery.
20 Answers
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Converting .NET DateTime to JSON [duplicate]
...r, that's fine too, but if that means you're doing substring + validation, now you're into multiple lines of code (hopefully in a separate function) which means more things that can go wrong and more programmer time spent (programmers being more expensive than CPUs).
– gregmac
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What's the difference between event.stopPropagation and event.preventDefault?
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It would be helpful to know what the default action is for a button click so I can reason about why stopDefault() doesn't work the same way as stopPropagation(). If the default action isn't calling the onclick method what is it?
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