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How can I find unused images and CSS styles in a website? [closed]

... unused CSS across many pages on a web site. The tool is javascript-based and runs from the browser. Helium accepts a list of URLs for different sections of a site then loads and parses each page to build up a list of all stylesheets. It then visits each page in the URL list and chec...
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Underscore: sortBy() based on multiple attributes

I am trying to sort an array with objects based on multiple attributes. I.e if the first attribute is the same between two objects a second attribute should be used to comapare the two objects. For example, consider the following array: ...
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How to import multiple .csv files at once?

... A speedy and succinct tidyverse solution: (more than twice as fast as Base R's read.csv) tbl <- list.files(pattern = "*.csv") %>% map_df(~read_csv(.)) and data.table's fread() can even cut those load times by half again. (for 1/4 the Base R times) library(data.table) tbl_fre...
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How to change navbar collapse threshold using Twitter bootstrap-responsive?

... will still apply to the other elements in your document. Here is a short demo with a media query set to drop at 550px as you require: http://jsfiddle.net/wU8MW/ Note: I placed the above modified @media queries way down below the css frame as the new modified css is supposed to be loaded first tha...
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Calling method using JavaScript prototype

Is it possible to call the base method from a prototype method in JavaScript if it's been overridden? 14 Answers ...
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Checking if sys.argv[x] is defined

...h = sys.argv[1] else: blah = 'blah' Some people prefer the exception-based approach you've suggested (eg, try: blah = sys.argv[1]; except IndexError: blah = 'blah'), but I don't like it as much because it doesn't “scale” nearly as nicely (eg, when you want to accept two or three arguments)...
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Concept behind these four lines of tricky C code

...The number 7709179928849219.0 has the following binary representation as a 64-bit double: 01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011 +^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- -------- + shows the position of the sign; ^ of the exponent, and - of t...
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What are all the common undefined behaviours that a C++ programmer should know about? [closed]

... amount greater than or equal to the number of bits in the number (e.g. int64_t i = 1; i <<= 72 is undefined) Types, Cast and Const Casting a numeric value into a value that can't be represented by the target type (either directly or via static_cast) Using an automatic variable before it has...
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Python function overloading

...n-time the selection among alternative functions must occur at run-time, based on the dynamically determined types of function arguments. Functions whose alternative implementations are selected in this manner are referred to most generally as multimethods. (Wikipedia) So we should be able...
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How to template If-Else structures in data-bound views?

I constantly find myself using this idiom in KO-based HTML templates: 4 Answers 4 ...