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Update just one gem with bundler

I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed: 8 A...
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How do I run Asynchronous callbacks in Playground

Many Cocoa and CocoaTouch methods have completion callbacks implemented as blocks in Objective-C and Closures in Swift. However, when trying these out in Playground, the completion is never called. For example: ...
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How to remove text from a string?

...123".replace(/data-/g,''); PS: The replace function returns a new string and leaves the original string unchanged, so use the function return value after the replace() call. share | improve this a...
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How can I split a shell command over multiple lines when using an IF statement?

How can I split a command over multiple lines in the shell, when the command is part of an if statement? 2 Answers ...
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How to use font-awesome icons from node-modules

...t "node_modules/font-awesome/less/font-awesome.less", or look in that file and import just the components that you need. I think this is the minimum for basic icons: /* adjust path as needed */ @fa_path: "../node_modules/font-awesome/less"; @import "@{fa_path}/variables.less"; @import "@{fa_path}/m...
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How can I count the occurrences of a list item?

... Use Counter if you are using Python 2.7 or 3.x and you want the number of occurrences for each element: >>> from collections import Counter >>> z = ['blue', 'red', 'blue', 'yellow', 'blue', 'red'] >>> Counter(z) Counter({'blue': 3, 'red': 2, 'ye...
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Get mouse wheel events in jQuery?

... There's a plugin that detects up/down mouse wheel and velocity over a region. share | improve this answer | follow | ...
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how do I query sql for a latest record date for each user

...te from MyTable group by username ) tm on t.username = tm.username and t.date = tm.MaxDate share | improve this answer | follow | ...
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How to save a data.frame in R?

... There is also dump and files created would be source()-ed, although the help(dump) page says save is "safer". – IRTFM Dec 1 '11 at 17:44 ...
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Index of Currently Selected Row in DataGridView

...tCell property for the DataGridView. datagridview.CurrentCell.RowIndex Handle the SelectionChanged event and find the index of the selected row as above. share | improve this answer | ...