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Reshaping data.frame from wide to long format
... an extended & improved implementation). melt from data.table has also more parameters that the melt-function from reshape2. You can for example also specify the name of the variable-column:
library(data.table)
long <- melt(setDT(wide), id.vars = c("Code","Country"), variable.name = "year")
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What is Ember RunLoop and how does it work?
...opagated, and perhaps their bindings propagated, and so on. Obviously, the more changes that need to be propagated from a single event, the longer the RunLoop will take to finish. Here's a (pretty unfair) example of how the RunLoop can get bogged down with propagating changes compared to another fra...
Zero-pad digits in string
...string. The following code does that:
$s = sprintf('%02d', $digit);
For more information, refer to the documentation of sprintf.
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Difference between “git add -A” and “git add .”
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Writing outputs to log file and console
...ct the output to console AND logfile, the console output is not colored anymore. What could be the reason for that?
– dieHellste
Aug 22 '18 at 9:04
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jQuery.inArray(), how to use it right?
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Of course, you could always define your own, more intuitive, function like $.isInArray = function(test,array) { return $.inArray(test, array) !== -1; };
– Wesley Smith
Nov 10 '15 at 6:46
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Which regular expression operator means 'Don't' match this character?
...rators, and always follow a matching operator. Thus, a+ means match one or more of a, [a-c0]+ means match one or more of a, b, c or 0, while [^a-c0]+ would match one or more of anything that wasn't a, b, c or 0.
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How can I do string interpolation in JavaScript?
...er important thing is, you don't have to worry about multi-line strings anymore. You can write them simply as
> `foo
... bar`
'foo\n bar'
Note: I used io.js v2.4.0 to evaluate all the template strings shown above. You can also use the latest Chrome to test the above shown examples.
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Create JSON object dynamically via JavaScript (Without concate strings)
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because json generation does not need count, more you can always use .length to get rows.
– Waqar Alamgir
May 12 '13 at 13:19
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