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What's the difference between echo, print, and print_r in PHP?

...play strings. The differences are subtle: print has a return value of 1 so it can be used in expressions whereas echo has a void return type; echo can take multiple parameters, although such usage is rare; echo is slightly faster than print. (Personally, I always use echo, never print.) var_dump pr...
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Is there a predefined enumeration for Month in the .NET library?

...follow | edited Jul 28 '11 at 17:31 Matt Enright 6,46044 gold badges2929 silver badges3131 bronze badges ...
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Make outer div be automatically the same height as its floating content

I want the outer div , which is black to wrap its div s floating within it. I dont want to use style='height: 200px in the div with the outerdiv id as I want it to be automatically the height of its content (eg, the floating div s). ...
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Why use Object.prototype.hasOwnProperty.call(myObj, prop) instead of myObj.hasOwnProperty(prop)?

If I understand correctly, each and every object in Javascript inherits from the Object prototype, which means that each and every object in Javascript has access to the hasOwnProperty function through its prototype chain. ...
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Bootstrap 3 Navbar with Logo

I want to use the Bootstrap 3 default navbar with an image logo instead of text branding. What's the proper way of doing this without causing any issues with different screen sizes? I assume this a common requirement, but I haven't yet seen a good code sample. A key requirement other than having acc...
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What are the advantages of using the C++ Boost libraries? [closed]

So, I've been reading through and it appears that the Boost libraries get used a lot in practice (not at my shop, though). Why is this? and what makes it so wonderful? ...
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What is the difference between graph search and tree search?

...rooted in the fact whether the problem graph is a tree or a general graph. It is always assumed you're dealing with a general graph. The distinction lies in the traversal pattern that is used to search through the graph, which can be graph-shaped or tree-shaped. If you're dealing with a tree-shaped...
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What is a serialVersionUID and why should I use it?

...od an explanation as you'll get: The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatib...
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bundler vs RVM vs gems vs RubyGems vs gemsets vs system ruby [closed]

... As per the previous answer, this is quite a lot to cover, so consider this a short introduction. gems are the way Ruby libraries are packaged. They are to Ruby what jars are to Java. Inside a gem file, you find Ruby code (.rb files), but also tests, and a specia...
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Browser statistics on JavaScript disabled [closed]

...ublically available statistics on the percentage of web users that browse with JavaScript disabled. 6 Answers ...