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Why can I throw null in Java? [duplicate]

... @bharal: It might not be possible to know at compile time. In the exact case of throw null, it is, but in a more general case where the exception object is decided upon at runtime, there may be no way to know. Evidently the addition (to the JLS) of a special case...
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When to use wrapper class and primitive type

... exceptions to indicate what has gone wrong. Good, I'll be doing that from now on... – klaar Nov 16 '17 at 8:46 1 ...
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How to fully remove Xcode 4

...d at startup. So I uninstalled 4.4, ran your command, reinstalled 4.4, and now things appear to work properly. Thank you – Giuseppe Sep 11 '12 at 12:46 ...
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Determine the number of lines within a text file

... rather than greedily reading them all into an array like ReadAllLines. So now you can have both efficiency and conciseness with: var lineCount = File.ReadLines(@"C:\file.txt").Count(); Original Answer If you're not too bothered about efficiency, you can simply write: var lineCount = File.Rea...
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UIBarButtonItem with custom image and no border

...BarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:customView]; Now, just add the custom UIBarButton to the leftBarButtonItem: self.navigationItem.leftBarButtonItem = customBarButtonItem; share | ...
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How do you find out the caller function in JavaScript?

...ecome obsolete since this post was listed in 2011. The preferred method is now Function.caller, (as of 2015). – Greg Jun 13 '15 at 2:52  |  sh...
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Does python have a sorted list?

... should have said "for an insert op". anyway, that was about a year ago so now I can easily mix things up or miss something – ジョージ Apr 13 '12 at 4:53 ...
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How to export collection to CSV in MongoDB?

...hemaless; CSV, on the other hand, has a fixed layout for columns. Without knowing what fields are used in different documents it's impossible to output the CSV dump. If you have a fixed schema perhaps you could retrieve one document, harvest the field names from it with a script and pass it to mong...
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center aligning a fixed position div

...your element in the fixed wrapper*/ display: flex; flex-flow: column nowrap; justify-content: center; /* aligns on vertical for column */ align-items: center; /* aligns on horizontal for column */ /* just for styling to see the limits */ border: 2px dashed red; box-sizing: b...
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$PHP_AUTOCONF errors on mac os x 10.7.3 when trying to install pecl extensions

...-s /usr/local/Cellar/autoconf/2.69/bin/autoheader /usr/bin/autoheader I know that this question was for 10.7, but I hope my answer is useful for someone on 10.8. :) Updated: Also works on 10.10 Yosemite. share | ...