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Can a foreign key be NULL and/or duplicate?
...ow nulls on the field that has the FK. The null value is separate from the idea of it being an FK.
Whether it is unique or not unique relates to whether the table has a one-one or a one-many relationship to the parent table. Now if you have a one-one relationship, it is possible that you could ha...
Should private helper methods be static if they can be static
...tual, since they both use static binding instead of dynamic, but I have no idea if either is faster than the other. I can't find any good references either. The closest I can find is this 1997 JavaWorld article, which basically restates what I just said:
The fastest instructions will most likely...
windowSoftInputMode=“adjustResize” not working with translucent action/navbar
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I have no idea why you set mInsets array elements while it's not used, but it works
– Buckstabue
May 26 '17 at 0:08
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Custom domain for GitHub project pages
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I have no idea what "sending DNS" means.
– ceving
May 16 '17 at 8:02
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Creating a blurring overlay view
... Synchronous UIView Snapshot Convolving. Great code and a great read. Some ideas from this post:
Use a serial queue to throttle updates from CADisplayLink.
Reuse bitmap contexts unless bounds change.
Draw smaller images using -[CALayer renderInContext:] with a 0.5f scale factor.
Other stuff
A...
Can I save the window layout in Visual Studio 2010/2012/2013?
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tried perspectives - nice idea but it's buggy as hell. ended up uninstalling.
– GarethD
Nov 21 '13 at 9:59
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How to differ sessions in browser-tabs?
...hink this through! :-) Looking at all the caveats you just know it's a bad idea. My lessons learned from this stuff is to truly understand what data should go into sessions and which data shouldn't.
– Peter
Jul 6 '10 at 12:12
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What exactly are unmanaged resources?
... want to know about unmanaged resources.
Can anyone please give me a basic idea?
7 Answers
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What is the best way to implement constants in Java? [closed]
...highly advise against having a single constants class. It may seem a good idea at the time, but when developers refuse to document constants and the class grows to encompass upwards of 500 constants which are all not related to each other at all (being related to entirely different aspects of the a...
How to generate a number of most distinctive colors in R?
... improved (e.g. by saving colour samples as data objects), but the general idea is there. (Load with devtools::source_gist('45b49da5e260a9fc1cd7'))
– jbaums
Nov 23 '14 at 16:00
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