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How to delete duplicate lines in a file without sorting it in Unix?
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From http://sed.sourceforge.net/sed1line.txt:
(Please don't ask me how this works ;-) )
# delete duplicate, consecutive lines from a file (emulates "uniq").
# First line in a set of duplicate lines is kept, rest are deleted.
sed '$!N; /^\(.*\)\n\1$/...
Minimum and maximum value of z-index?
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http://www.w3.org/TR/CSS21/visuren.html#z-index
'z-index'
Value: auto | <integer> | inherit
http://www.w3.org/TR/CSS21/syndata.html#numbers
Some value types may have integer
values (denoted by <integer...
Sass Variable in CSS calc() function
...you to understand transform-origin, rotate() and skew():
https://tympanus.net/codrops/2013/08/09/building-a-circular-navigation-with-css-transforms/
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Abstraction VS Information Hiding VS Encapsulation
...ed through information hiding) = the object internally,
Example:
In the .NET Framework, the System.Text.StringBuilder class provides an abstraction over a string buffer. This buffer abstraction lets you work with the buffer without regard for its implementation. Thus, you're able to append strings...
How can I specify a local gem in my Gemfile?
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Way better way of doing it this here: rossta.net/blog/…
– Cyzanfar
Oct 24 '16 at 16:13
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How to fix Error: listen EADDRINUSE while using nodejs?
... edited Apr 10 '19 at 9:09
E_net4 the account reporter
18.8k77 gold badges5959 silver badges9898 bronze badges
answered Jul 31 '12 at 17:33
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How to get the children of the $(this) selector?
...ildren/ and Find http://api.jquery.com/find/.
See example http://jsfiddle.net/lalitjs/Nx8a6/
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Border around specific rows in a table?
...l of the solutions presented here and I've done more searching on the internet for other possible solutions, and I think I've found one that's promising:
tr.top td {
border-top: thin solid black;
}
tr.bottom td {
border-bottom: thin solid black;
}
tr.row td:first-child {
border...
Is there YAML syntax for sharing part of a list or map?
...e trick, as in the following (untested) example:
sitelist: &sites
? www.foo.com # "www.foo.com" is the key, the value is null
? www.bar.com
anotherlist:
<< : *sites # merge *sites into this mapping
? www.baz.com # add extra stuff
Some things to notice. Firstly, since <&...
What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
...t the time of this answer) for example:
<link ... href="http://sstatic.net/stackoverflow/all.css?v=c298c7f8233d">
I think instead of a revision number the SO team went with a file hash, which is an even better approach, even with a new release, the browsers only forced to grab a new version...