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Check whether a string is not null and not empty
How can I check whether a string is not null and not empty?
31 Answers
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Why does ContentResolver.requestSync not trigger a sync?
...rn as discussed at Google IO - slide 26. My content provider is working, and my sync works when I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from my ContentProvider, my sync is never triggered.
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Why Qt is misusing model/view terminology?
...ation page they state, that they simplified the MVC to MV by merging View and Controller and they are giving the following picture:
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vagrant up failed, /dev/vboxnetctl: no such file or directory
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I'm running macOS High Sierra 10.13.1 and VirtualBox 5.2.2.
This worked for me:
Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra)
Open Terminal and run: sudo "/Library/Appl...
SQL how to make null values come last when sorting ascending
...e with a datetime field. The field in question can be null. I have a query and I want the results sorted ascendingly by the datetime field, however I want rows where the datetime field is null at the end of the list, not at the beginning.
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What is the formal difference in Scala between braces and parentheses, and when should they be used?
...rmal difference between passing arguments to functions in parentheses () and in braces {} ?
9 Answers
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Difference between == and ===
In swift there seem to be two equality operators: the double equals ( == ) and the triple equals ( === ), what is the difference between the two?
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bundler vs RVM vs gems vs RubyGems vs gemsets vs system ruby [closed]
I am new to Ruby and trying to wrap my head around following concepts: bundler vs RVM vs gems vs RubyGems vs gemsets vs system rub and I'm confused.
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How can I get “Copy to Output Directory” to work with Unit Tests?
...e the tests are executed the test output is copied to a TestResults folder and then the tests are executed. The issue I'm having is that not all the files in the Debug/bin directory are copied to the TestResults project.
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Why not use exceptions as regular flow of control?
To avoid all standard-answers I could have Googled on, I will provide an example you all can attack at will.
24 Answers
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