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No Swipe Back when hiding Navigation Bar in UINavigationController

... navigationController?.navigationBar.hidden = true does work, but does not allow your change in navigation bar to be hidden. Lastly, it's generally better practice to create a model object that is the UIGestureRecognizerDelegate for your navigation controller. Setting it to a controller in the UINa...
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Underscore: sortBy() based on multiple attributes

... said, that's pretty hacky. To do this properly you'd probably want to actually use the core JavaScript sort method: patients.sort(function(x, y) { var roomX = x[0].roomNumber; var roomY = y[0].roomNumber; if (roomX !== roomY) { return compare(roomX, roomY); } return compare(x[0].name...
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The SQL OVER() clause - when and why is it useful?

... retrieve both individual OrderQty values and their sums, counts, averages etc. over groups of same SalesOrderIDs. Here's a practical example of why windowed aggregates are great. Suppose you need to calculate what percent of a total every value is. Without windowed aggregates you'd have to first d...
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How do I loop through or enumerate a JavaScript object?

...uilt-in key-value pairs that have meta-information. When you loop through all the key-value pairs for an object you're looping through them too. hasOwnPropery() filters these out. – danieltalsky Jan 27 '12 at 15:56 ...
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Two way/reverse map [duplicate]

... 1 >>> del d['foo'] >>> d['bar'] Traceback (most recent call last): File "<stdin>", line 7, in <module> KeyError: 'bar' I'm sure I didn't cover all the cases, but that should get you started. ...
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How to check if an object is a generator object in python?

... @JAB, @Piotr: Reflected to address all the possibilities of what the OP can mean , thanks JAB :) – mouad Jun 20 '11 at 19:57 1 ...
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undefined reference to `WinMain@16'

... Building without that semi-documented flag one would have to more specifically tell the linker which subsystem value one desires, and some Windows API import libraries will then in general have to be specified explicitly: C:\test> gnuc x.cpp -Wl,-subsystem,windows C:\test> objdump -x a.exe...
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Why does Android use Java? [closed]

...ill be exploitable themselves. No buffer-overruns, mistakes with pointers, etc... share | improve this answer | follow | ...
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How can i query for null values in entity framework?

...g this bug! For backwards compatibility, it will be opt-in - you need manually enable a setting to make entry == value work. No word yet on what this setting is. Stay tuned! Edit 2: According to this post by the EF team, this issue has been fixed in EF6! Woohoo! We changed the default be...
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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?

I just started using Qt and noticed that all the example class definitions have the macro Q_OBJECT as the first line. What is the purpose of this preprocessor macro? ...