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CSS: Setting width/height as Percentage minus pixels

I'm trying to create some re-usable CSS classes for more consistency and less clutter on my site, and I'm stuck on trying to standardize one thing I use frequently. ...
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Overlaying histograms with ggplot2 in R

... position = 'identity' isn't just a more readable answer, it gels more nicely with more complicated plots, such as mixed calls to aes() and aes_string(). – rensa Apr 4 '16 at 3:41 ...
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Timeout for python requests.get entire response

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How can I represent an 'Enum' in Python?

...o been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi. For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2). To use enum34, do $ pip install enum34 To...
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What is a 'semantic predicate' in ANTLR?

...ring consisting of at least // one number, optionally followed by zero or more comma's and numbers parse : number (',' number)* EOF ; // matches a number that is between 1 and 3 digits long number : Digit Digit Digit | Digit Digit | Digit ; // matches a single digit Digit : '0'...
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How can I determine if a variable is 'undefined' or 'null'?

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Best way to merge two maps and sum the values of same key?

...ator, so you get the sum of values for each duplicate key. Edit: A little more detail, as per user482745's request. Mathematically a semigroup is just a set of values, together with an operator that takes two values from that set, and produces another value from that set. So integers under additi...
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Why java.lang.Object is not abstract? [duplicate]

...e developers to figure out how they should be implementing them, making it more obvious that they should be consistent (see Effective Java). However, I'm more of the opinion that hashCode(), equals() and clone() belong on separate, opt-in abstractions (i.e. interfaces). The other methods, wait(), no...
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Remove all but numbers from NSString

...tring separator. Not as efficient as picking through characters, but much more compact in code. share | improve this answer | follow | ...
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How to find unused images in an Xcode project?

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