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Print number of keys in Redis

... key. Also Redis may actively evict some expired keys, but not necessarily all of them. – seppo0010 Aug 24 '15 at 22:23 add a comment  |  ...
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What's the recommended approach to resetting migration history using Django South?

...inted out by @thnee below. Since your answer has so many upvotes I'd really appreciate it if you could edit it and add at least a warning about this, or (even better) change it to reflect @hobs approach (which is just as convenient, but doesn't affect other apps) - thanks! – chris...
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Readonly Properties in Objective-C?

...ing"; // Notice the underscore prefix of var name. That’s it, that’s all you need. No muss, no fuss. Details As of Xcode 4.4 and LLVM Compiler 4.0 (New Features in Xcode 4.4), you need not mess with the chores discussed in the other answers: The synthesize keyword Declaring a variable Re-...
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Where to store global constants in an iOS application?

...sets of constants to include before #include-ing the constants file (stops all those "defined but not used" compiler warnings). – user244343 Aug 19 '11 at 2:26 ...
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Do sealed classes really offer performance Benefits?

... The JITter will sometimes use non-virtual calls to methods in sealed classes since there is no way they can be extended further. There are complex rules regarding calling type, virtual/nonvirtual, and I don't know them all so I can't really outline them for you, but ...
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How do I select a random value from an enumeration?

... Use Enum.GetValues to retrieve an array of all values. Then select a random array item. static Random _R = new Random (); static T RandomEnumValue<T> () { var v = Enum.GetValues (typeof (T)); return (T) v.GetValue (_R.Next(v.Length)); } Test: for (in...
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Create a table without a header in Markdown

... headers multimarkdown Maruku: A popular implementation in Ruby byword: "All tables must begin with one or more rows of headers" PHP Markdown Extra "second line contains a mandatory separator line between the headers and the content" RDiscount Uses PHP Markdown Extra syntax. GitHub Flavoured Markd...
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What is the purpose of backbone.js?

... There is of course nothing to stop you from implementing a Controller, a Service, even a ViewModel should you so wish, it's just JavaScript. – superluminary Aug 27 '14 at 8:13 3 ...
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Difference between 'python setup.py install' and 'pip install'

...ython package, NOT about the advantage of uploading package to an indexing service like PyPi. As lest I know some software distributor does not upload their package to PyPi, instead asking developers to download package from their website and install. python setup.py install This can work but...
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How to use Morgan logger?

...mote ip, request method, http version, response status, user agent etc. It allows you to modify the log using tokens or add color to them by defining 'dev' or even logging out to an output stream, like a file. For the purpose we thought we can use it, as in this case, we still have to use: console...