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How do I modify a MySQL column to allow NULL?

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iOS - How to set a UISwitch programmatically

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Is there a difference between foo(void) and foo() in C++ or C?

... | edited Aug 27 '17 at 2:52 Jonathan Leffler 641k111111 gold badges777777 silver badges11481148 bronze badges ...
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How can I limit Parallel.ForEach?

... 583 You can specify a MaxDegreeOfParallelism in a ParallelOptions parameter: Parallel.ForEach( ...
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I don't remember my android debug.keystore password

... 259 Usually the debug.keystore password is just "android". You can delete it and Eclipse will auto...
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What is the purpose of @SmallTest, @MediumTest, and @LargeTest annotations in Android?

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git push to specific branch

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How do I iterate through the alphabet?

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ARC and bridged cast

... 215 I agree that the description is confusing. Since I just grasped them, I'll try to summarize: (...
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Simple calculations for working with lat/lon and km distance?

... The approximate conversions are: Latitude: 1 deg = 110.574 km Longitude: 1 deg = 111.320*cos(latitude) km This doesn't fully correct for the Earth's polar flattening - for that you'd probably want a more complicated formula using the WGS84 reference ellipsoid (the model used fo...