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Using querySelector with IDs that are numbers

...haracter 1 is U+0031, so you would escape it as \000031 or \31 . Basically, to escape any numeric character, just prefix it with \3 and append a space character ( ). Yay Unicode! So your code would end up as (CSS first, JS second): #\31 { background: hotpink; } document.getElementById(...
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What's the difference between echo, print, and print_r in PHP?

...s, although such usage is rare; echo is slightly faster than print. (Personally, I always use echo, never print.) var_dump prints out a detailed dump of a variable, including its type and the type of any sub-items (if it's an array or an object). print_r prints a variable in a more human-readable f...
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How do I accomplish an if/else in mustache.js?

... The mustache docs are hilarious. "We call it "logic-less" because there are no if statements, else clauses, or for loops." Yeeeeaaaaaa.... – boxed Nov 10 '15 at 13:25 ...
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Web deployment task build failed

... I encountered the same issue when building via TFS. When I tried to manually import the website I got a more informative error: "not able to log on the user \WDeployConfigWriter". Turns out that when you install web deploy it sets up two local accounts WDeployConfigWriter and WDeployAdmin. The p...
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Semicolons superfluous at the end of a line in shell scripts?

...e superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details. share | impro...
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How do I add a path to PYTHONPATH in virtualenv

... You can usually avoid having to do anything with PYTHONPATH by using .pth files. Just put a file with a .pth extension (any basename works) in your virtualenv's site-packages folder, e.g. lib\python2.7\site-packages, with the absolute p...
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How can I check if character in a string is a letter? (Python)

... str.isalpha() Return true if all characters in the string are alphabetic and there is at least one character, false otherwise. Alphabetic characters are those characters defined in the Unicode character database as “Letter”, i.e., those with general ...
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How can I extract a good quality JPEG image from a video file with ffmpeg?

...ical file sizes and (to my naked eye) appear the same as without qscale at all. – felwithe Jan 28 '15 at 23:03 Can you...
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What are the differences between the BLOB and TEXT datatypes in MySQL?

...nstead of using blob or text ? because in memory calculating, varchar is really simple, for example create table website( website_name varchar(30) ) and then we fill the website_name "stackoverflow" so the memory needed is 13byte – nencor Jul 24 '12 at 9:36 ...
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Django: How to manage development and production settings?

...s you define environment variables in an "environment" (.env) file. Finally, note that you can take advantage of the PYTHONPATH variable to store the settings in a completely different location (e.g. on a production server, storing them in /etc/). This allows for separating configuration from ap...