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How do you create optional arguments in php?

...ny attributes need to be processed, you can use the variadic argument list token(...) introduced in PHP 5.6 (see full documentation here). Syntax: function <functionName> ([<type> ]...<$paramName>) {} For example: function someVariadricFunc(...$arguments) { foreach ($argumen...
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Is there a regular expression to detect a valid regular expression?

...re pretty self-explanatory. SKIP : { " " | "\r" | "\t" | "\n" } TOKEN : { < DIGITO: ["0" - "9"] > | < MAYUSCULA: ["A" - "Z"] > | < MINUSCULA: ["a" - "z"] > | < LAMBDA: "LAMBDA" > | < VACIO: "VACIO" > } IRegularExpression Expression() : { IRe...
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Rule-of-Three becomes Rule-of-Five with C++11?

...p;& other) as Philipp points out in his answer, if it has dynamically allocated members, or generally stores pointers. Just like you should have a copy-ctor, assignment operator and destructor if the points mentioned before apply. Thoughts? ...
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What is the difference between `git merge` and `git merge --no-ff`?

... 14 (delta 10), reused 0 (delta 0) To git@github.com:me/mywebsite.git 8a0d9ec..333eff5 master -> master Script for automating the above Having used this process 10+ times in a day, I have taken to writing batch scripts to execute the commands, so I made an almost-proper git_update.sh &l...
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Ruby: How to turn a hash into HTTP parameters?

... a good example: require 'rack' Rack::Utils.build_query( authorization_token: "foo", access_level: "moderator", previous: "index" ) # => "authorization_token=foo&access_level=moderator&previous=index" It even handles arrays: Rack::Utils.build_query( {:a => "a", :b => ["c...
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Are Swift variables atomic?

...link to the Hopper Disassembler tool. Looks neat. – C0D3 May 25 '16 at 14:20 add a comment  |  ...
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Does Parallel.ForEach limit the number of active threads?

...s, based on how many you physically have and how many are already busy. It allocates work for each core and then uses a technique called work stealing to let each thread process its own queue efficiently and only need to do any expensive cross-thread access when it really needs to. Have a look at t...
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Can you attach a UIGestureRecognizer to multiple views?

...matically UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didPressed:)]; [self.view1 addGestureRecognizer:tapRecognizer]; [self.view2 addGestureRecognizer:tapRecognizer]; Output view1 has no gesture recognizers array ; view2 has got ges...
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How to write a scalable Tcp/Ip based server

.... The main feature of these enhancements is the avoidance of the repeated allocation and synchronization of objects during high-volume asynchronous socket I/O. The Begin/End design pattern currently implemented by the System.Net.Sockets..::.Socket class requires a System..::.IAsyncResult object be ...
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Efficient way to remove ALL whitespace from String?

...planation as to what this expression means, \s means "match any whitespace token", and + means "match one or more of the proceeding token". Also RegExr is a nice website to practice writing RegEx expressions with, if you want to experiment. – jrh Oct 31 '17 at...