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Saving enum from select in Rails 4.1

...;/option> </select> Values went from "0" to "red" and now we're all set. If you're using a regular ol' rails text_field it's: f.select :color, Wine.colors.keys.to_a If you want to have clean human-readable attributes you can also do: f.select :color, Wine.colors.keys.map { |w| [w...
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What is this Javascript “require”?

...es are a way to split an application into separate files instead of having all of your application in one file. This concept is also present in other languages with minor differences in syntax and behavior, like C's include, Python's import, and so on. One big difference between Node.js modules and...
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How can I pass a parameter to a setTimeout() callback?

...tipage/…). However, using a string instead of a function object is generally considered poor style because it is essentially a form of delayed eval(). – Miles Jul 27 '09 at 21:41 ...
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How to use a variable to specify column name in ggplot

... "cumbersome"? Non-standard evaluation in R is ironically the most cumbersome "feature" I have ever encountered in a programming language. Truly maddening. – jessexknight Feb 4 at 18:10 ...
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How to play a notification sound on websites?

.../div> Browser support <audio> (Modern browsers) <embed> (Fallback) Codes used MP3 for Chrome, Safari and Internet Explorer. OGG for Firefox and Opera. share | improve this answer...
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iOS Detect 3G or WiFi

... Shouldn't you call [reachability stopNotifier] after you have the status? – zekel Nov 9 '11 at 18:41 3 ...
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Android and XMPP: Currently available solutions [closed]

... Edited comments > hi all > I am using asmack for developing my xmpp client,I am facing a problem > When i come from 1st time login I start my chatting with user B and receiving messages from user B also that is fine.i switch off my wifi and...
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How to randomize (or permute) a dataframe rowwise and columnwise?

...] 1 0 0 1 0 [4,] 0 0 1 0 1 To explain the call: out <- permatswap(mat, times = 99, burnin = 20000, thin = 500, mtype = "prab") times is the number of randomised matrices you want, here 99 burnin is the number of swaps made before we start taking random samples....
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What is the difference between MOV and LEA?

...reas MOV loads the actual value at that address. The purpose of LEA is to allow one to perform a non-trivial address calculation and store the result [for later usage] LEA ax, [BP+SI+5] ; Compute address of value MOV ax, [BP+SI+5] ; Load value at that address Where there are just constants invo...
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UIView Infinite 360 degree rotation animation?

... This might help some one, [view.layer removeAllAnimations]; to stop animation when needed. – arunit21 Aug 22 '14 at 13:57 ...