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How do I Sort a Multidimensional Array in PHP [duplicate]

...'s associative if you want: this code takes care of sorting items, but you select the actual sort function (usort or uasort). Finally, it does not use array_multisort: while array_multisort is convenient, it depends on creating a projection of all your input data before sorting. This consumes time a...
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Display open transactions in MySQL

... the current transaction list in InnoDB with the query below if you want. SELECT * FROM information_schema.innodb_trx\G From the document: The INNODB_TRX table contains information about every transaction (excluding read-only transactions) currently executing inside InnoDB, including whether t...
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Is < faster than

...ughput Jcc N/A 0.5 with the following footnote on Jcc: 7) Selection of conditional jump instructions should be based on the recommendation of section Section 3.4.1, “Branch Prediction Optimization,” to improve the predictability of branches. When branches are predicted successf...
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Why use argparse rather than optparse?

... defining arguments. (My source recommends: Why Click) python-inquirer For selection focused tools and based on Inquirer.js (repo) If you need a more in-depth comparison please read this and you may end up using docopt or click. Thanks to Kyle Purdon! ...
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How do you effectively model inheritance in a database?

...etimes needed, when you want to load a list of all records (without doing select on each and every child table). One way to handle this, is to have one column representing the type of the child class (similar to the rowType field in the TPH), so mixing the TPT and TPH somehow. Say we want to des...
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What is the most ridiculous pessimization you've seen? [closed]

...nearly all their tables have an associated archive table, and most queries select from views that UNION the pairs of tables. Performance is as you would expect! – Tony Andrews Mar 26 '09 at 13:32 ...
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How to link godaddy domain with AWS Elastic Beanstalk environment?

...s). Now you can link you domain with your Elastic Beanstalk site. To do so select/create proper A record type in Route 53 and set Alias for it: Hope it helps. share | improve this answer ...
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Storyboard - refer to ViewController in AppDelegate

... If you use XCode 5 you should do it in a different way. Select your UIViewController in UIStoryboard Go to the Identity Inspector on the right top pane Check the Use Storyboard ID checkbox Write a unique id to the Storyboard ID field Then write your code. // Override point for ...
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Symbolicating iPhone App Crash Reports

...able if the script complains about it like so: export DEVELOPER_DIR=`xcode-select --print-path` . I added this line to my ~/.bash_profile. See stackoverflow.com/q/11682789/350761 – Eliot Sep 22 '13 at 6:54 ...
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Running a cron every 30 seconds

... superb answer, should be the selected answer – GuidedHacking Feb 21 at 16:42 add a comment  |  ...