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How to sort an ArrayList?
...t the runtime characteristics of reverse, but sorting descending could actually be faster then sorting ascending and then reversing. Moreover, using a List implementation that supports Comparator as constructor argument (thus keeping it invariant) would ensure the list is sorted at all times.
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get list of pandas dataframe columns based on data type
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this doesn't work if all your dataframe columns are returning object type, regardless of their actual contents
– user5359531
Jul 17 '17 at 23:46
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.htaccess mod_rewrite - how to exclude directory from rewrite rule
...ries on my server from these rules, so they can become accessible. For now all requests are sent to index.php file.
6 Answ...
How to terminate a window in tmux?
... This works fine: Ctrl+b &, note, that you have to confirm with y to really kill the current window incluning all panes in that window. You will get be placed inside the window that you used last before that.
– rubo77
Sep 1 '16 at 5:02
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Can't update Macports (with Mac OS X Mavericks)
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Install the "Command Line Tools" first:
sudo xcode-select --install
(Explicitly agreeing to the license is sometimes necessary via "sudo xcodebuild -license")
Then upgrade the ports:
sudo port -v selfupdate
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How do I determine the size of my array in C?
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It should be the case with all compilers, since the results of sizeof is defined as a compile-time constant.
– Mark Harrison
Sep 22 '13 at 5:39
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When should one use a 'www' subdomain?
...bility to set a cross-subdomain cookie. This seems evident, but this means allowing authenticated users to move between your subdomains is more of a technical challenge.
So ask yourself some questions. Do I set cookies? Do I care about potentially needless bandwidth expenditure? Will authenticated ...
Bootstrap 3 - Why is row class is wider than its container?
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In all grid systems, there are gutters between each column. Bootstrap's system sets a 15px padding on both the left and the right of each column to create this gutter.
The issue is that the first column should not have half a g...
Check for installed packages before running install.packages() [duplicate]
...h several users on different computers. One of its lines contains the install.packages("xtable") command.
16 Answers
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Simulate limited bandwidth from within Chrome?
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If you are running Linux, the following command is really useful for this:
trickle -s -d 50 -w 100 firefox
The -s tells the command to run standalone, the -d 50 tells it to limit bandwidth to 50 KB/s, the -w 100 set the peak detection window size to 100 KB. firefox tells the...