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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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Is there a way that I can check if a data attribute exists?
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It will return false if the value exists and is equal to 0. This is quirky.
– Gherman
Apr 7 '15 at 6:42
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Javascript when to use prototypes
I'd like to understand when it is appropriate to use prototype methods in js. Should they always be used? Or are there cases where using them is not preferred and/or incurs a performance penalty?
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Javascript AES encryption [closed]
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This is now quite useful and feature rich code.google.com/p/crypto-js
– David Kierans
Apr 25 '12 at 4:21
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How can I find out if I have Xcode commandline tools installed?
...ebuild -version
will give you the xcode version, run it via Terminal command
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import module from string variable
...tion from future MPL releases.
I selected interested submodules/packages and want to list their main classes from which I'll generate list and process it with pydoc
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Best way to iterate through a Perl array
Which is the best implementation(in terms of speed and memory usage) for iterating through a Perl array? Is there any better way? ( @Array need not be retained).
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How to format a number 0..9 to display with 2 digits (it's NOT a date)
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This will generate an Android Linter Warning "Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead"
– Christopher Stock
Feb 15 '19 at 10:36
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Multiprocessing - Pipe vs Queue
What are the fundamental differences between queues and pipes in Python's multiprocessing package ?
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Convert JsonNode into POJO
...thing else. If your object coming in has more properties than the POJO has and you just want to ignore the extras you'll want to set this:
objectMapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
Or you'll get an error that it can't find the property to set int...