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Determine the type of an object?

...ry, or something else? I am getting an object back that may be either type and I need to be able to tell the difference. 13...
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Return multiple values in JavaScript?

... first: getFirstValue(), second: getSecondValue(), }; } And to access them: var values = getValues(); var first = values.first; var second = values.second; Or with ES6 syntax: const {first, second} = getValues(); * See this table for browser compatibility. Basically, all mod...
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How to check if running as root in a bash script

I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits. ...
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Dispelling the UIImage imageNamed: FUD

...Feb 2014: Note that this question dates from iOS 2.0! Image requirements and handling have moved on a lot since then. Retina makes images bigger and loading them slightly more complex. With the built in support for iPad and retina images, you should certainly use ImageNamed in your code . ...
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How is malloc() implemented internally? [duplicate]

...it). So you have two methods of getting more memory from the kernel: sbrk and mmap. There are various strategies on how to organize the memory that you've got from the kernel. One naive way is to partition it into zones, often called "buckets", which are dedicated to certain structure sizes. For e...
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?

...h faster since it doesn't have to deal with all those extra method calls. And as Atrey points out, c.contains(..) increases the time complexity of removeAll to O(n2) as opposed to clear's O(n). share | ...
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Remove or uninstall library previously added : cocoapods

...our podfile (delete the lines with the pods you don't want to use anymore) and run: $ pod install Done. share | improve this answer | follow | ...
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What does passport.session() middleware do?

...entication system using Passport.js using Easy Node Authentication: Setup and Local tutorial . 4 Answers ...
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How do I use the nohup command without getting nohup.out?

I have a problem with the nohup command. 8 Answers 8 ...
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Why is document.write considered a “bad practice”?

I know document.write is considered bad practice; and I'm hoping to compile a list of reasons to submit to a 3rd party vendor as to why they shouldn't use document.write in implementations of their analytics code. ...