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How can I load an object into a variable name that I specify from an R data file?
When you save a variable in an R data file using save , it is saved under whatever name it had in the session that saved it. When I later go to load it from another session, it is loaded with the same name, which the loading script cannot possibly know. This name could overwrite an existing variabl...
How to convert a number to string and vice versa in C++
...an use stream manipulators, such as std::endl, std::hex and functions std::setw(), std::setprecision() etc. with string streams in exactly the same manner as with cout
Do not confuse std::ostringstream with std::ostrstream. The latter is deprecated
Use boost lexical cast. If you are not familiar wi...
Is it possible to do a sparse checkout without checking out the whole repository first?
...sparse-checkout init --cone # to fetch only root files
git sparse-checkout set apps/my_app libs/my_lib # etc, to list sub-folders to checkout
# they are checked out immediately after this command, no need to run git pull
Note that it requires git version 2.25 installed. Read more about it here: ht...
how to show lines in common (reverse diff)?
.... I find grep to be more admin-friendly than comm, so if you just want the set of matching lines (useful for comparing CSVs, for instance) simply use
grep -F -x -f file1 file2
or the simplified fgrep version
fgrep -xf file1 file2
Plus, you can use file2* to glob and look for lines in common wi...
Set Colorbar Range in matplotlib
... norm=mpl.colors.Normalize(vmin=-0.5, vmax=1.5))
cbar.set_clim(-2.0, 2.0)
With the two different limits you can control the range and legend of the colorbar. In this example only the range between -0.5 to 1.5 is show in the bar, while the colormap covers -2 to 2 (so this could...
How do you run a command for each line of a file?
...ces can be supported by changing the separator. To change it to newlines, set the 'IFS' environment variable before the script/command. Ex: export IFS='$\n'
– codesniffer
Sep 14 '18 at 22:58
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Why is super.super.method(); not allowed in Java?
...just an easy-to-understand example of violating encapsulation. It could be setting a property instead. Besides, not all aspects will be visible at a type level. Generics isn't the answer to everything.
– Jon Skeet
Feb 25 '09 at 15:56
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ZSH complains about RVM __rvm_cleanse_variables: function definition file not found
... seem necessary to bypass the remove file confirmation (if the user has it set in the first place)
– pech0rin
Dec 5 '16 at 21:38
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What are the lesser known but useful data structures?
...nger than a char, which is a shame. They're only suitable for certain data-sets.
– Joe
Jan 29 '10 at 12:06
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Easy way to test a URL for 404 in PHP?
...he error code using curl_getinfo as such:
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
/* Get the HTML or whatever is linked in $url. */
$response = curl_exec($handle);
/* Check for 404 (file not found). */
$httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
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