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Count the number occurrences of a character in a string

...e counts for a lot of the letters in a given string, Counter provides them all in a more succinct form. If you want the count for one letter from a lot of different strings, Counter provides no benefit. – Brenden Brown Feb 17 '15 at 19:30 ...
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How do I catch a numpy warning like it's an exception (not just for testing)?

...ng: divide by zero encountered in divide array([0]) >>> np.seterr(all='print') {'over': 'warn', 'divide': 'warn', 'invalid': 'warn', 'under': 'ignore'} >>> np.array([1])/0 #'print' mode Warning: divide by zero encountered in divide array([0]) This means that the warning you see...
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lodash multi-column sortBy descending

...dash.com/docs#orderBy) in Lodash as of 4.3.0. The normal sort function is called _.sortBy(lodash.com/docs#sortBy) – Nidhin David Feb 12 '16 at 11:19 2 ...
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How do I use a Boolean in Python?

Does Python actually contain a Boolean value? I know that you can do: 7 Answers 7 ...
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What's the difference between utf8_general_ci and utf8_unicode_ci?

...languages or characters. On modern servers, this performance boost will be all but negligible. It was devised in a time when servers had a tiny fraction of the CPU performance of today's computers. Benefits of utf8mb4_unicode_ci over utf8mb4_general_ci utf8mb4_unicode_ci, which uses the Unicode r...
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Programmatically Request Access to Contacts

...ss to the address book must be granted before it can be access programmatically. Here is what I ended up doing. #import <AddressBookUI/AddressBookUI.h> // Request authorization to Address Book ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL); if (ABAddress...
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How to manually create icns files using iconutil?

...following instructions (link): Use iconutil to Create an icns File Manually The iconutil command-line tool converts iconset folders to deployment-ready, high-resolution icns files. (You can find complete documentation for this tool by entering man iconutil in Terminal.) Using this tool al...
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Input from the keyboard in command line application

... @PeterWebb - works fine in xcode terminal, falls through in playground :) – aprofromindia Apr 8 '16 at 14:50 2 ...
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How do I detect a click outside an element?

...instead of the jQuery part. But element.closest() is now also available in all major browsers (the W3C version differs a bit from the jQuery one). Polyfills can be found here: Element.closest() Edit – 2020-05-21 In the case where you want the user to be able to click-and-drag inside the element, t...
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Can I specify multiple users for myself in .gitconfig?

... You can manually edit those config files with git config --edit and git config --global --edit. And in case you missed Abizern’s comment, a repository’s config file is at <repo-root>/.git/config. – Rory O'...