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How to print last two columns using awk
...NF-1 vs. $(NF-1) issue. Next question what does POSIX say?
per:
http://www.opengroup.org/onlinepubs/009695399/utilities/awk.html
There is no direction one way or the other. Not good. gawk implies subtraction, other awks imply field number or subtraction. hmm.
...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
...sizes adding up for each open TCP/IP socket. Here's some additional info: https://serverfault.com/questions/48717/practical-maximum-open-file-descriptors-ulimit-n-for-a-high-volume-system
As for decreased latency via WS vs. HTTP, it's true since there's no more parsing of HTTP headers beyond the i...
Mac OS X Terminal: Map option+delete to “backward delete word”
...k delete (kill) from cursor to end of line, and a bunch more.
See http://www.bigsmoke.us/readline/shortcuts for a nice little reference table.
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Mocking python function based on input arguments
...>>> m(2)
3
>>> m.mock_calls
[call(1), call(2)]
http://www.voidspace.org.uk/python/mock/mock.html#calling
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MySQL LIKE IN()?
...s sense.
If you want to learn more about regular expressions, I recommend www.regular-expressions.info as a good reference site.
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Retrieve a Fragment from a ViewPager
...Fragment(0) has to work.
Here is the solution implemented into ViewPager https://gist.github.com/jacek-marchwicki/d6320ba9a910c514424d. If something fail you will see good crash log.
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#ifdef #ifndef in Java
... 1.2.5, it can also
preprocess the Apple Objective C
library.
http://www.anarres.org/projects/jcpp/
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CSS center text (horizontally and vertically) inside a div block
...xt:
position: relative;
top: 50%;
transform: translateY(-50%);
Example: https://jsfiddle.net/wb8u02kL/1/
To shrink-wrap the width:
The solution above used a fixed width for the content area. To use a shrink-wrapped width, use
position: relative;
float: left;
top: 50%;
left: 50%;
transform: tra...
How to change the default encoding to UTF-8 for Apache?
...at your pages have a charset set as well. See this for more info:
http://www.w3.org/TR/REC-html40/charset.html
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Round to at most 2 decimal places (only if necessary)
...ath.round(+arr[0] + "e" + sig + (+arr[1] + scale)) + "e-" + scale);
}
}
https://plnkr.co/edit/uau8BlS1cqbvWPCHJeOy?p=preview
NOTE: This is not a universal solution for everyone. There are several different rounding algorithms, your implementation can be different, depends on your requirements. ht...