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How to replace a string in multiple files in linux command line
...ord/new-word/g' @
Command breakdown
grep -r: --recursive, recursively read all files under each directory.
grep -l: --print-with-matches, prints the name of each file that has a match, instead of printing matching lines.
grep -i: --ignore-case.
xargs: transform the STDIN to arguments, follow...
What is time_t ultimately a typedef to?
...he on-disk data structure may happen. However, since filesystems are often read by other operating systems, it'd be silly to define the filesystem based on such implementation-dependent types. For example, the same filesystem might be used on both 32-bit and 64-bit systems, and time_t might change s...
How can I measure the speed of code written in PHP? [closed]
... passed during its execution ; other answers said that and gave examples already, so I won"t say much more.
This is a nice solution if you want to benchmark a couple of instructions ; like compare two types of functions, for instance -- it's better if done thousands of times, to make sure any "pert...
Why does Clojure have “keywords” in addition to “symbols”?
...dge of other Lisps (particularly Scheme) from way back. Recently I've been reading about Clojure . I see that it has both "symbols" and "keywords". Symbols I'm familiar with, but not with keywords.
...
Using async-await on .net 4
...osoft.Bcl.Async) through Nuget as a replacement for the AsyncCTP.
You can read more about it here: http://blogs.msdn.com/b/bclteam/archive/2013/04/17/microsoft-bcl-async-is-now-stable.aspx.
You can read about the previous version here: http://blogs.msdn.com/b/lucian/archive/2012/04/24/async-target...
What's the difference between libev and libevent?
...ample, global variable usage made it hard to use libevent safely in multithreaded environments, watcher structures are big because they combine I/O, time and signal handlers in one, the extra components such as the http and dns servers suffered from bad implementation quality and resultant security ...
Why does modern Perl avoid UTF-8 by default?
...ce you successfully create a file by a given name, that when you run ls or readdir on its enclosing directory, you’ll actually find that file with the name you created it under is buggy, broken, and wrong. Stop being surprised by this!
Code that believes UTF-16 is a fixed-width encoding is stupid,...
how do I make a single legend for many subplots with matplotlib?
...he files defined in the list ficheiros). In each loop, a different file is read and a subplot is added to the figure.
– carla
Jan 31 '18 at 11:08
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Can someone give an example of cosine similarity, in a very simple, graphical way?
...re that, try to use log frequency weighting on all term vectors. If your already dealing with normalized vectors, then it's the dot product of A.B.
– Ali Gajani
May 10 '14 at 3:16
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GOTO still considered harmful? [closed]
... Let's not bog down a simple example.)
On the other hand, if the code had read this way:
...
goto 10
...
a = b + 1
10: /* do something with a */
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goto 10
...
The multiplicity of ways to get to label 10 means that we have to work much harder to be confident about the relationships between a an...