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Delete empty lines using sed

...\s*$ will match all "empty" lines, empty here means, the line contains no chars, or the line contains only empty strings (E.g. spaces). All matched lines will be removed by sed, with the d command. – Kent Feb 26 '17 at 19:41 ...
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How can I format a String number to have commas and round?

...as well merge this into a BigInteger type of class that handles compressed char[] arrays for math computations. share | improve this answer | follow | ...
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Convert DOS line endings to Linux line endings in Vim

...s I created in Windows, the lines all end with ^M . How do I delete these characters all at once? 26 Answers ...
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How can I render inline JavaScript with Jade / Pug?

...ersion 7.0 The docs says you should use a script tag now, followed by a . char and no preceding space. Example: script. if (usingJade) console.log('you are awesome') else console.log('use jade') will be compiled to <script> if (usingJade) console.log('you are awesome') ...
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“Unicode Error ”unicodeescape" codec can't decode bytes… Cannot open text files in Python 3 [duplica

...Users\Eric\Desktop\beeline.txt" Here, \U in "C:\Users... starts an eight-character Unicode escape, such as \U00014321. In your code, the escape is followed by the character 's', which is invalid. You either need to duplicate all backslashes: "C:\\Users\\Eric\\Desktop\\beeline.txt" Or prefix th...
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[ :Unexpected operator in shell programming [duplicate]

...gh omitted whitespace around the brackets hardly compensate for the single character saved. ("if [ $x = 5 ]" vs "if test $x = 5"; 13 chars vs 14). – William Pursell Aug 8 '10 at 3:17 ...
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Alternatives to gprof [closed]

...lways found profilers not so useful for fixing slow code, and instead used selective bits of debugging code to measure the time taken by a group of statements of my choosing, often aided by some trivial little macros or whatever. It's never taken me too long to find the culprit, but I've always bee...
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Receive JSON POST with PHP

...eeing did not work when the JSON was being sent with outer most "container chars" as []. This answer here with RAW_POST_DATA did the trick for me. And is fine with my current PHP stack. I was stuck for a while .. thanks very much for this solution! – Gene Bo ...
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How to get a tab character?

In HTML, there is no character for a tab, but I am confused as to why I can copy and paste one here: . (You can't see the full width of it, but if you click to edit my question, you will see the character.) If I can copy and paste a tab character, there should be a unicode equivalent that can be ...
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How to avoid reverse engineering of an APK file?

... is looking for a needle in a haystack. Insert random classes containing snippets from the internet, or just functions for calculating random things like the Fibonacci sequence. Make sure these classes compile, but aren't used by the actual functionality of the app. Add enough of these false classes...