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Relative frequencies / proportions with dplyr
... I want to calculate the proportion of different values within each group. For example, using the mtcars data, how do I calculate the relative frequency of number of gears by am (automatic/manual) in one go with dplyr ?
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Remove HTML Tags in Javascript with Regex
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Try this, noting that the grammar of HTML is too complex for regular expressions to be correct 100% of the time:
var regex = /(<([^>]+)>)/ig
, body = "<p>test</p>"
, result = body.replace(regex, "");
console.log(result);
If you're willing to use a libra...
How to get browser width using JavaScript code?
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Update for 2017
My original answer was written in 2009. While it still works, I'd like to update it for 2017. Browsers can still behave differently. I trust the jQuery team to do a great job at maintaining cross-browser consistency...
How to add 'ON DELETE CASCADE' in ALTER TABLE statement
I have a foreign key constraint in my table, I want to add ON DELETE CASCADE to it.
9 Answers
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XmlSerializer - There was an error reflecting type
...exception; the Uri class does not have a parameterless constructor. Thanks for the tip.
– ford
Oct 28 '11 at 21:45
10
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What does send() do in Ruby?
...asses visibility checks, so that you can call private methods, too (useful for unit testing).
If there is really no variable before send, that means that the global Object is used:
send :to_s # "main"
send :class # Object
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pycharm convert tabs to spaces automatically
I am using pycharm IDE for python development it works perfectly fine for django code so suspected that converting tabs to spaces is default behaviour, however in python IDE is giving errors everywhere because it can't convert tabs to spaces automatically is there a way to achieve this.
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jQuery Call to WebService returns “No Transport” error
...e. If your browser doesn't allow it, setting this property will do nothing for you. I would recommend putting in a bit of effort now to get JSONP in place. At the very least, you might want to try and see if forcing jQuery cross-domain support works with all the browsers you plan on supporting. I al...
Linq: adding conditions to the where clause conditionally
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Thank goodness for simplicity! I am so sick of seeing 20+ line Linq queries when the above is so much more readable
– justanotherdev
Dec 16 '15 at 23:00
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What is the correct MIME type to use for an RSS feed?
...e what Media-type to use and start using it". Today: see my answer below for evidence that pretty much all popular feeds use text/xml.
– Kai Carver
Apr 19 '16 at 3:54
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