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How to wait for 2 seconds?
How does one cause a delay in execution for a specified number of seconds?
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dplyr: “Error in n(): function should not be called directly”
I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded.
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Best way to check if a URL is valid
I want to use PHP to check, if string stored in $myoutput variable contains a valid link syntax or is it just a normal text. The function or solution, that I'm looking for, should recognize all links formats including the ones with GET parameters.
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What is the best practice for making an AJAX call in Angular.js?
I was reading this article: http://eviltrout.com/2013/06/15/ember-vs-angular.html
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Smart way to truncate long strings
Does anyone have a more sophisticated solution/library for truncating strings with JavaScript and putting an ellipsis on the end, than the obvious one:
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Groovy / grails how to determine a data type?
What is the best way to determine the data type in groovy?
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How can I stop a Postgres script when it encounters an error?
Is there a way to specify that when executing a sql script it stops when encountering the first error on the script, it usually continues, regardless of previous errors.
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What does the (unary) * operator do in this Ruby code?
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Iterate over object keys in node.js
Since Javascript 1.7 there is an Iterator object, which allows this:
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Getting a 'source: not found' error when using source in a bash script
I'm trying to write (what I thought would be) a simple bash script that will:
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