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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]

... tidyverse solutions now moved to the top. – Aaron left Stack Overflow Oct 11 '19 at 17:34 add a comment ...
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How can I see the entire HTTP request that's being sent by my Python application?

...egration, but their SDK didn't work, I couldn't tell why, and I needed to know what was actually going on to properly fix it. It's very frustrating, but being able to see the raw traffic really helps. share | ...
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How to go up a level in the src path of a URL in HTML?

... Here is all you need to know about relative file paths: Starting with / returns to the root directory and starts there Starting with ../ moves one directory backward and starts there Starting with ../../ moves two directories backward and starts th...
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What is the best way to find the users home directory in Java?

...nding Windows API in a very nice way. In particular, using Shell32Util.getKnownFolderPath(...) in combination with one of the constants from the KnownFolders class should be appropriate. The older getFolderPath API function is deprecated since Windows Vista. – Sebastian Marschi...
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Rails ActionMailer - format sender and recipient name/email address

... It looks like the Mail gem now dupes the string passed in, so name.dup doesn't seem necessary anymore. Source reads: @display_name = str.nil? ? nil : str.dup – philoye Sep 7 '16 at 4:38 ...
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String output: format or concat in C#?

...be your bottleneck. I would bet money that you are just pulling that from nowhere, though; having written and profiled a number of webapps in the past, I've almost always found the bottleneck in response times (on the serverside) to be the database queries. – BlueRaja - Danny ...
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Recommended Vim plugins for JavaScript coding? [closed]

...stalling the plugin, make install doesn't do the trick for the moment. For now I just add the repo's bin/ dir to my $PATH instead. See DoctorJS's GitHub and issues pages for more info. Install the TagBar Vim plugin (NOTE: It's TagBar, not the old infamous TagList!). PROFIT. :) New Project - Tern....
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oh-my-zsh slow, but only for certain Git repo

...makes things slow, like the rake folder does for rails apps? zsh is fast now, and I do not need the GIT zsh plugin anyway. Thanks! – mblaettermann Dec 31 '15 at 22:01 ...
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Editing Javascript using Chrome Developer Tools

... I know this question is stale, but I just had a similar problem and found the solution. If you have the file prettified, Chrome will not allow edits. I turned it off and was able to edit. Willing to bet this is/was your problem...
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Modifying a query string without reloading the page

... great. so right now.. simply putting a # instead of a & when writing to window.location.href works for me. in that it doesn't reload the page. i am sure it will break once i test it in IE.. at which point i'll go with the library you sug...