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What's a quick way to test to see a file exists?
...s = FileManager.default.fileExists(atPath: somePath)
Thanks to Nikolay Suvandzhiev.
Objective-C (Original):
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:somePath];
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INSERT … ON DUPLICATE KEY (do nothing)
...).
If you don't care about errors (conversion errors, foreign key errors) and autoincrement field exhaustion (it's incremented even if the row is not inserted due to duplicate key), then use INSERT IGNORE.
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IntelliJ does not show 'Class' when we right click and select 'New'
We're creating a new project in IntelliJ and must have something wrong because when we right click on a directory, select New and then get the context menu, Java based options are not shown. Currently get things like File, some HTML options, XML options.
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Failed to install Python Cryptography package with PIP and setup.py
... pip install cryptography or by downloading the package from their site and running python setup.py , I get the following error:
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PHP sprintf escaping %
... postfix: "",
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Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
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Git Commit Messages: 50/72 Formatting
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For these reasons, the "summary" must be no more than 70-75
characters, and it must describe both what the patch changes, as well
as why the patch might be necessary. It is challenging to be both
succinct and descriptive, but that is what a well-written summary
should do.
That said, it seems l...
How to sort git tags by version string order of form rc-X.Y.Z.W?
When I enter a command:
7 Answers
7
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When to use StringBuilder in Java [duplicate]
...gBuilder (not StringBuffer) instead of a String, because it is much faster and consumes less memory.
If you have a single statement,
String s = "1, " + "2, " + "3, " + "4, " ...;
then you can use Strings, because the compiler will use StringBuilder automatically.
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Continuously read from STDOUT of external process in Ruby
I want to run blender from the command line through a ruby script, which will then process the output given by blender line by line to update a progress bar in a GUI. It's not really important that blender is the external process whose stdout I need to read.
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