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When to wrap quotes around a shell variable?
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140
General rule: quote it if it can either be empty or contain spaces (or any whitespace really) o...
How to create an HTML button that acts like a link?
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answered May 25 '10 at 16:40
BalusCBalusC
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@UniqueConstraint annotation in Java
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427
To ensure a field value is unique you can write
@Column(unique=true)
String username;
The @...
How to dismiss ViewController in Swift?
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419
From you image it seems like you presented the ViewController using push
The dismissViewContr...
Chrome DevTools Devices does not detect device when plugged in
...not seem to get the DevTools Devices feature to work on my Samsung Galaxy S4 even after following the steps outlined at https://developers.google.com/chrome-developer-tools/docs/remote-debugging
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Xcode 6 - How to pick signing certificate/provisioning profile for Ad-Hoc distribution?
...th Xcode 6 (didn't need to re-install Xcode 5).
http://www.thecave.com/2014/09/16/using-xcodebuild-to-export-a-ipa-from-an-archive/
Script in terminal:
xcodebuild -exportArchive -archivePath $projectname.xcarchive -exportPath $projectname -exportFormat ipa -exportProvisioningProfile 'Provisioning...
How do I determine the size of an object in Python?
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>>> import sys
>>> x = 2
>>> sys.getsizeof(x)
24
>>> sys.getsizeof(sys.getsizeof)
32
>>> sys.getsizeof('this')
38
>>> sys.getsizeof('this also')
48
If you are in python < 2.6 and don't have sys.getsizeof you can use this extensive module ins...
How to convert / cast long to String?
...ing.valueOf(date);
If your Long might be null and you don't want to get a 4-letter "null" string, you might use Objects.toString, like: String s = Objects.toString(date, null);
EDIT:
You reverse it using Long l = Long.valueOf(s); but in this direction you need to catch NumberFormatException
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Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
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54 Answers
54
Active
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What are C++ functors and their uses?
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14 Answers
14
Active
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