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How to delete duplicates on a MySQL table?
...ables. Wouldn't it be better to SELECT MAX(ID) FROM t GROUP BY unique and then JOIN to an exact match of ID to MAX(ID)?
– ebyrob
Nov 10 '16 at 16:31
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Loading local JSON file
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If you're doing this with jest, then remember to do jest.dontMock('./data.json'); or else the result is empty. Might be useful for someone out there :)
– Håvard Geithus
Jun 28 '15 at 17:43
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Correctly determine if date string is a valid date in that format
...ou are using PHP 5.2.x, you should use strtotime to get the unix timestamp then date('Y-m-d', $t) to get the string date. Then you compare them just like this answer.
– pedromanoel
Jun 24 '14 at 14:00
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Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
...namic programming solution. We start off knowing 0 keys can make us 0 A's. Then we iterate through for i up to n, doing two things: pressing A once and pressing select all + copy followed by paste j times (actually j-i-1 below; note the trick here: the contents are still in the clipboard, so we can ...
How does lucene index documents?
...hen lucene indexes a document it breaks it down into a number of terms. It then stores the terms in an index file where each term is associated with the documents that contain it. You could think of it as a bit like a hashtable.
Terms are generated using an analyzer which stems each word to its roo...
How can I format patch with what I stash away
...ges. Is it possible that I can create a patch with what I stash away? And then apply that patch in some other repository (my co-worker's)?
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How to delete all datastore in Google App Engine?
...t the live datastore, open the dashboard for your app (login on appengine) then datastore --> dataviewer, select all the rows for the table you want to delete and hit the delete button (you'll have to do this for all your tables).
You can do the same programmatically through the remote_api (but ...
Timeout command on Mac OS X?
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You can use
brew install coreutils
And then whenever you need timeout, use
gtimeout
..instead. To explain why here's a snippet from the Homebrew Caveats section:
Caveats
All commands have been installed with the prefix 'g'.
If you really need to u...
How to simulate Android killing my process
...Development options" and set background limit to "no background processes" then every time you press home the process will die.
– Joao Gavazzi
Jun 2 '16 at 5:33
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What do “branch”, “tag” and “trunk” mean in Subversion repositories?
...ersion
You come across some bugs in the code, and fix them in trunk, and then merge the fixes over to the 1.0 branch. You can also do the opposite, and fix the bugs in the 1.0 branch and then merge them back to trunk, but commonly projects stick with merging one-way only to lessen the chance of mi...