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What is the difference between --save and --save-dev?

... Shorthand versions: -D is short for --save-dev and -S is short for --save – chrisco Mar 26 '17 at 14:07 ...
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Difference between map and collect in Ruby?

I have Googled this and got patchy / contradictory opinions - is there actually any difference between doing a map and doing a collect on an array in Ruby/Rails? ...
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Good Free Alternative To MS Access [closed]

...ngine. It provides a full application development platform, including form and menu designer, client application language and environment (VBA), and report designer. When you take all those things together, MS Access really has no peer. But for the scope of this question, we're concerned with the r...
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Difference between viewDidLoad and viewDidAppear

What is the difference between viewDidLoad and viewDidAppear ? What kind of initialization or custom code goes into those functions? ...
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Addressing localhost from a VirtualBox virtual machine [closed]

...-from-virtualbox-xp-install-ubuntu It suggests using IP: http://10.0.2.2, and it worked for me. So, I edited the hosts file, C:\windows\system32\drivers\etc\hosts, and added this entry: 10.0.2.2 outer If you're testing on IE8, remember to put http:// in the address bar. Just putting the ip d...
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Switching between GCC and Clang/LLVM using CMake

I have a number of projects built using CMake and I'd like to be able to easily switch between using GCC or Clang/LLVM to compile them. I believe (please correct me if I'm mistaken!) that to use Clang I need to set the following: ...
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Abstract functions in Swift Language

...I think fatalError() is better for this one reason – André Fratelli Jul 5 '14 at 0:15 6 Also the...
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Arrow operator (->) usage in C

...g a book called "Teach Yourself C in 21 Days" (I have already learned Java and C# so I am moving at a much faster pace). I was reading the chapter on pointers and the -> (arrow) operator came up without explanation. I think that it is used to call members and functions (like the equivalent of...
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Looking for ALT+LeftArrowKey solution in zsh

...recently switched from bash to zsh, however I miss my Alt + LeftArrowKey and Alt + RightArrowKey to go back and forth a word at a time. ...
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Do HTML WebSockets maintain an open connection for each client? Does this scale?

... line of communication with the server. I'm just wondering how that scales and how many open WebSocket connections a server can handle. Maybe leaving those connections open isn't a problem in reality, but it feels like it is. ...