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Get nth character of a string in Swift programming language

...t libraries and system components. The correct interpretation should be selected according to the use case and the APIs involved, so String cannot be subscripted with an integer. Swift provides several different ways to access the character data stored inside strings. String.ut...
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What's the difference between HEAD^ and HEAD~ in Git?

... commit with only one parent, rev~ and rev^ mean the same thing. The caret selector becomes useful with merge commits because each one is the child of two or more parents — and strains language borrowed from biology. HEAD^ means the first immediate parent of the tip of the current branch. HEAD^ is...
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Spinlock versus Semaphore

...perly designed that way (probably a queue of pending operations, and here, selecting the next one, leaving the actual on the queue). – Hibou57 Jul 30 '13 at 1:11 ...
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Check if an apt-get package is installed and then install it if it's not on Linux

... is available The documentations are also very unclear, e.g.: sudo apt dselect-upgrade did not remove certbot when it was marked as deinstall, even though man apt-get seems to indicate that: dselect-upgrade is used in conjunction with the traditional Debian packaging front-end, dselect(1). ...
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What's the point of the X-Requested-With header?

... are already loaded. So you can use an AJAX to get the recipe the user has selected but to save time and bandwidth don't load the header/footer/ads. Now you can just write a secondary endpoint for the data like www.example.com/recipe_only/apple_pie but that's harder to maintain and share to other ...
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Android: Background Image Size (in Pixel) which Support All Devices

...ese steps: Open the existing image in GIMP tool. Go to "Image" menu, and select "Scale Image..." Use below pixel dimension that you need: xxxhdpi: 1280x1920 px xxhdpi: 960x1600 px xhdpi: 640x960 px hdpi: 480x800 px mdpi: 320x480 px ldpi: 240x320 px Then "Export" the image from "File" menu. ...
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How do I share IntelliJ Run/Debug configurations between projects?

... goto Run > Edit Configuration > create or select existing configuration you want to use > click save and persist it on file system > click on share check mark now copy this file from PROJECT_ROOT_DIRECTORY/.idea/runConfigurations/ConfigurationName.xml to ...
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Generate pdf from HTML in div using Javascript

...are still done in jQuery style "#id", but it does not mean that all jQuery selectors are supported. Therefore replacing '#ignorePDF' with class selectors like '.ignorePDF' did not work for me. Instead you will have to add the same handler for each and every element, which you want to ignore like: ...
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Why do some functions have underscores “__” before and after the function name?

...ml", title = _("Title"), data = self.application.db.query("select ... where object_id=%s", self.object_id) ) ... share | improve this answer | follow ...
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Can I specify multiple users for myself in .gitconfig?

... an arbitrary number of IDs inside a configfile (~/.gitpassport) which are selectable on a prompt. You can find the project at github.com: git-passport - A Git command and hook written in Python to manage multiple Git accounts / user identities. ...