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Using socket.io in Express 4 and express-generator's /bin/www

...by defining module.exports as a function which accepts io as a parameter. index.js module.exports = function(io) { var app = require('express'); var router = app.Router(); io.on('connection', function(socket) { (...) }); return router; } Then, pass io into the mod...
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Paging UICollectionView by cells, not screen

...f.articles.count - 1; } [self.articlesCollectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForRow:cellToSwipe inSection:0] atScrollPosition:UICollectionViewScrollPositionLeft animated:YES]; } share ...
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Pandas percentage of total with groupby

... @dhardy state_office is a Series with a Multi Index -- so it's just one column whose values are all numeric. After you do the groupby, each x is a subset of that column. Does that make sense? – exp1orer Feb 8 '15 at 15:22 ...
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Can I set background image and opacity in the same property?

...e probably not going to be picking out many details, so you can convert to Indexed-PNG. I actually use this on my own website, and it squashes a 1920x1080 background image to just under 250kb in size. – Niet the Dark Absol Jul 2 '17 at 9:50 ...
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What's the simplest way to list conflicted files in Git?

...flict markers including line numbers. For example: > git diff --check index-localhost.html:85: leftover conflict marker index-localhost.html:87: leftover conflict marker index-localhost.html:89: leftover conflict marker index.html:85: leftover conflict marker index.html:87: leftover conflict ma...
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What is a void pointer in C++? [duplicate]

...perly constructed object in it yet), it is typeless. IE: void. It is an opaque handle; it references a created object without naming a specific type. Code that does this is generally poorly formed, since this is better done by forward declaring a struct/class and simply not providing a public defini...
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Is it possible to apply CSS to half of a character?

...s from collapsing */ } .halfStyle:before { display: block; z-index: 1; position: absolute; top: 0; left: 0; width: 50%; content: attr(data-content); /* dynamic content for the pseudo element */ overflow: hidden; color: #f00; } <script src="https:...
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Are there pronounceable names for common Haskell operators? [closed]

...s " " [whitespace]) . pipe to a . b: "b pipe-to a" !! index ! index / strict a ! b: "a index b", foo !x: foo strict x <|> or / alternative expr <|> term: "expr or term" ++ concat / plus / append [] empty list : cons :: of type / as ...
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Which Java Collection should I use?

...presenting a Collection whose elements are ordered and each have a numeric index representing its position, where zero is the first element, and (length - 1) is the last. ArrayList: A List backed by an array, where the array has a length (called "capacity") that is at least as large as the number o...
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How to split/partition a dataset into training and test datasets for, e.g., cross validation?

...ation import StratifiedKFold skf = StratifiedKFold(y, n_folds=5) for train_index, test_index in skf: print("TRAIN:", train_index, "TEST:", test_index) X_train, X_test = X[train_index], X[test_index] y_train, y_test = y[train_index], y[test_index] ...