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setState vs replaceState in React.js
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With setState the current and previous states are merged. With replaceState, it throws out th...
What's the difference between ASCII and Unicode?
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ASCII defines 128 characters, which map to the numbers 0–127. Unicode defines (less than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved).
Unicode is a supe...
Can you attach a UIGestureRecognizer to multiple views?
... view2 are recognized. If I comment out the third line then taps on view1 are recognized. If I'm right and you can only use a gesture recognizer once, I'm not sure if this is a bug or it just needs some more documentation.
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shortcut for creating a Map from a List in groovy?
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I've recently came across the need to do exactly that: converting a list into a map. This ques...
How to Batch Rename Files in a macOS Terminal?
...f there's a chance that your filenames start with -, place -- before them[1]:
mv -- "$f" "${f/_*_/_}"
Note: echo is prepended to mv so as to perform a dry run. Remove it to perform actual renaming.
You can run it from the command line or use it in a script.
"${f/_*_/_}" is an application of bas...
How to remove part of a string before a “:” in javascript?
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What is the Invariant Culture?
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The invariant culture is a special culture which is useful because it will not change. The cur...