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Unique constraint on multiple columns

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Find out how much memory is being used by an object in Python [duplicate]

...mory] profiler" yield: PySizer, "a memory profiler for Python," found at http://pysizer.8325.org/. However the page seems to indicate that the project hasn't been updated for a while, and refers to... Heapy, "support[ing] debugging and optimization regarding memory related issues in Python progra...
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Removing all non-numeric characters from string in Python

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Facebook Android Generate Key Hash

...th your own package name ( package name in Manifest.xml). Official link - https://developers.facebook.com/docs/android/login-with-facebook/ ( See the bottom of the page) OLD ANSWER (Generating Keyhash using openssl ) to generate signature you need openssl installed on your pc. If you don’t hav...
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Using a piano keyboard as a computer keyboard [closed]

... A good library in .NET with full midi support (BASS), go to http://www.un4seen.com. And for the other part, translating keyboard midi notes to keys and more, I would go for AutoItX, the ActiveX/COM and DLL interface to autoIt. Info and download, go to http://www.autoitscript.com/site...
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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?

...rated into the pattern match automatically by the compiler in the future: https://issues.scala-lang.org/browse/SI-6517 share | improve this answer | follow | ...
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Storing time-series data, relational or non?

...nuary2014.data 1_2_february2014.data 1_2_march2014.data or use kdb+ from http://kx.com because they do all this for you:) column-oriented is what may help you. There is a cloud-based column-oriented solution popping up, so you may want to have a look at: http://timeseries.guru ...
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Javascript - Append HTML to container element without innerHTML

...om of this post. xml_add('before', id_('element_after'), '<span xmlns="http://www.w3.org/1999/xhtml">Some text.</span>'); xml_add('after', id_('element_before'), '<input type="text" xmlns="http://www.w3.org/1999/xhtml" />'); xml_add('inside', id_('element_parent'), '<input ty...
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How to create a jQuery plugin with methods?

... According to the jQuery Plugin Authoring page (http://docs.jquery.com/Plugins/Authoring), it's best not to muddy up the jQuery and jQuery.fn namespaces. They suggest this method: (function( $ ){ var methods = { init : function(options) { }, ...
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How do I use Ruby for shell scripting?

... This might also be helpful: http://rush.heroku.com/ I haven't used it much, but looks pretty cool From the site: rush is a replacement for the unix shell (bash, zsh, etc) which uses pure Ruby syntax. Grep through files, find and kill processes, co...