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What does the smiley face “:)” mean in CSS?

...wsers. Also there's a hack for <= IE 8: div { color: blue; /* All browsers */ color: purple\9; /* IE8 and earlier */ *color: pink; /* IE7 and earlier */ } However that's not a good idea, they don't validate. You always feel free to work with Conditional comments for targeting...
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What does the “yield” keyword do?

... list, you can read its items one by one. Reading its items one by one is called iteration: >>> mylist = [1, 2, 3] >>> for i in mylist: ... print(i) 1 2 3 mylist is an iterable. When you use a list comprehension, you create a list, and so an iterable: >>> mylist = [...
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Explain the “setUp” and “tearDown” Python methods used in test cases

...nd tearDown methods while writing test cases apart from that setUp is called immediately before calling the test method and tearDown is called immediately after it has been called? ...
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Replacing spaces with underscores in JavaScript?

...e to replace spaces with _, it works for the first space in the string but all the other instances of spaces remain unchanged. Anybody know why? ...
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Usage of __slots__?

What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not? 11 A...
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NodeJS - Error installing with NPM

I am installing a certain NodeJS script - Caress . But i am not unable to. I am using Windows 8.1, can anyone tell me what is the problem i am facing, and why is this installation not working. There seems to be a problem with the buffertools dependency, thats far as i can think. Dont know how maybe...
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Cannot set content-type to 'application/json' in jQuery.ajax

...S header is used to find out if the request from the originating domain is allowed. Using fiddler, I added the following to the response headers from my server. Access-Control-Allow-Origin: * Access-Control-Allow-Headers: Content-Type Access-Control-Allow-Methods: POST, GET, OPTIONS Once the b...
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What is the correct XPath for choosing attributes that contain “foo”?

Given this XML, what XPath returns all elements whose prop attribute contains Foo (the first three nodes): 9 Answers ...
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Automatically deleting related rows in Laravel (Eloquent ORM)

...(); static::deleting(function($user) { // before delete() method call this $user->photos()->delete(); // do the rest of the cleanup... }); } } You should probably also put the whole thing inside a transaction, to ensure the referential integrity...
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Read Excel File in Python

...value)) except ValueError: pass finally: values.append(value) item = Arm(*values) items.append(item) for item in items: print item print("Accessing one single value (eg. DSPName): {0}".format(item.dsp_name)) print ...