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Applying a function to every row of a table using dplyr?
...singly not recommended, although lots of people seem to find it intuitive. Do yourself a favour and go through Jenny Bryan's Row-oriented workflows in R with the tidyverse material to get a good handle on this topic.
The most straightforward way I have found is based on one of Hadley's examples usi...
Using port number in Windows host file
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The hosts file is for host name resolution only (on Windows as well as on Unix-like systems). You cannot put port numbers in there, and there is no way to do what you want with generic OS-level configuration - the browser is what selects the port to choose.
So use bookmarks or s...
How to fix Error: listen EADDRINUSE while using nodejs?
... the server on the port 80, then the server also works perfectly. But if I do an xmlhttprequest after I started the server, then I get this error.
– Danny Fox
Mar 27 '12 at 22:54
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How do you delete all text above a certain line
How do you delete all text above a certain line. For deletion below a line I use "d shift g"
5 Answers
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How to un-submodule a Git submodule?
...dule"
If you also want to preserve the history of the submodule, you can do a small trick: "merge" the submodule into the main repository so that the result will be the same as it was before, except that the submodule files are now in the main repository.
In the main module you will need to do th...
How do I check if an object has a specific property in JavaScript?
How do I check if an object has a specific property in JavaScript?
24 Answers
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Relative imports in Python 2.7
...g that file from somewhere else. Just knowing what directory a file is in does not determine what package Python thinks it is in. That depends, additionally, on how you load the file into Python (by running or by importing).
There are two ways to load a Python file: as the top-level script, or as...
jQuery - add additional parameters on submit (NOT ajax)
...s there a way to pass additional parameters to a form? I am NOT looking to do this with Ajax - this is normal, refresh-typical form submission.
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Call ASP.NET function from JavaScript?
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Well, if you don't want to do it using Ajax or any other way and just want a normal ASP.NET postback to happen, here is how you do it (without using any other libraries):
It is a little tricky though... :)
i. In your code file (assuming...
“is” operator behaves unexpectedly with integers
Why does the following behave unexpectedly in Python?
11 Answers
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