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What's the difference between SCSS and Sass?

From what I've been reading, Sass is a language that makes CSS more powerful with variable and math support. 13 Answers ...
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When and why should I use fragments in Android applications? [duplicate]

...eed the different parts of my applications to have their own special behavior and UI, and I don't know how fragments can help. In most cases, I think it is quicker to create 2 different activities (e.g., 1 for tablets and 1 for handsets), and to share the common behaviors and events in a third class...
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How to check if a file exists in Go?

...library does not have a function solely intended to check if a file exists or not (like Python's os.path.exists ). What is the idiomatic way to do it? ...
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NSUserDefaults - How to tell if a key exists

I'm working on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple. ...
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Check if image exists on server using JavaScript?

...vascript is there a way to tell if a resource is available on the server? For instance I have images 1.jpg - 5.jpg loaded into the html page. I'd like to call a JavaScript function every minute or so that would roughly do the following scratch code... ...
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Multiple inheritance for an anonymous class

How can an anonymous class implement two (or more) interfaces? Alternatively, how can it both extend a class and implement an interface? For example, I want to create an object of anonymous class that extends two interfaces: ...
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How can you diff two pipelines in Bash?

How can you diff two pipelines without using temporary files in Bash? Say you have two command pipelines: 3 Answers ...
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structure vs class in swift language

From Apple book "One of the most important differences between structures and classes is that structures are always copied when they are passed around in your code, but classes are passed by reference." ...
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What is the best way to ensure only one instance of a Bash script is running? [duplicate]

...] $ [Terminal #2] $ lockfile -r 0 /tmp/the.lock [Terminal #2] lockfile: Sorry, giving up on "/tmp/the.lock" [Terminal #1] $ rm -f /tmp/the.lock [Terminal #1] $ [Terminal #2] $ lockfile -r 0 /tmp/the.lock [Terminal #2] $ After /tmp/the.lock has been acquired your script will be the only one w...
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Print string and variable contents on the same line in R

Is there a way to print text and variable contents on the same line? For example, 8 Answers ...