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Why do people say that Ruby is slow? [closed]

I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here. ...
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What is function overloading and overriding in php?

...that method. In PHP, you can only overload methods using the magic method __call. An example of overriding: <?php class Foo { function myFoo() { return "Foo"; } } class Bar extends Foo { function myFoo() { return "Bar"; } } $foo = new Foo; $bar = new Bar; echo($foo-&...
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Initialize a byte array to a certain value, other than the default null? [duplicate]

... For small arrays use array initialisation syntax: var sevenItems = new byte[] { 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }; For larger arrays use a standard for loop. This is the most readable and efficient way to do it: var se...
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jQuery AJAX submit form

... interesting idea, however, i do not control the server side I am calling, therefore I cannot send it serialized data – Nathan H Dec 25 '09 at 1:45 26 ...
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Handling a colon in an element ID in a CSS selector [duplicate]

...mpatibility mode. This other answer to this same question did work. basically \3A instead of \:. – Merlyn Morgan-Graham Mar 30 '12 at 2:32 ...
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How to create a self-signed certificate with OpenSSL

... For anyone else using this in automation, here's all of the common parameters for the subject: -subj "/C=US/ST=Oregon/L=Portland/O=Company Name/OU=Org/CN=www.example.com" – Alex S Jun 5 '15 at 18:13 ...
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What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA

... skills, and I'm curious what are the differences between these patterns? All of them seem like they are the same thing - encapsulate the database logic for a specific entity so the calling code has no knowledge of the underlying persistence layer. From my brief research all of them typically impl...
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What's the difference between an object initializer and a constructor?

...re parameters, and are used to create and initialize an object before the calling method gets the handle to the created object. For example: MyObject myObjectInstance = new MyObject(param1, param2); In this case, the constructor of MyObject will be run with the values param1 and param2. These ar...
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What's the best way to parse command line arguments? [closed]

... will accept -q or --query as options, store the argument in an attribute called query and has a default value if you don't specify it. It is also self-documenting in that you declare the help argument (which will be used when run with -h/--help) right there with the option. Usually you parse your...
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How do I pass a method as a parameter in Python

...thodToRun() return result obj.method2(obj.method1) Note: I believe a __call__() method does exist, i.e. you could technically do methodToRun.__call__(), but you probably should never do so explicitly. __call__() is meant to be implemented, not to be invoked from your own code. If you wanted me...