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Length of string in bash
... would like to show the difference between string length and byte length:
myvar='Généralités'
chrlen=${#myvar}
oLang=$LANG oLcAll=$LC_ALL
LANG=C LC_ALL=C
bytlen=${#myvar}
LANG=$oLang LC_ALL=$oLcAll
printf "%s is %d char len, but %d bytes len.\n" "${myvar}" $chrlen $bytlen
will render:
Génér...
How do I use vi keys in ipython under *nix?
Currently in Bash I use set -o vi to enable vi mode in my bash prompt.
6 Answers
6
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Grepping a huge file (80GB) any way to speed it up?
...which is otherwise not overloaded.
Any alternative to grep? Anything about my syntax that can be improved, (egrep,fgrep better?)
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Best way to define private methods for a class in Objective-C
I just started programming Objective-C and, having a background in Java, wonder how people writing Objective-C programs deal with private methods.
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Does ruby have real multithreading?
...of ruby using green threads . How can I create real "OS-level" threads in my application in order to make use of multiple cpu cores for processing?
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How to create module-wide variables in Python? [duplicate]
Is there a way to set up a global variable inside of a module? When I tried to do it the most obvious way as appears below, the Python interpreter said the variable __DBNAME__ did not exist.
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Distinct() with lambda?
Right, so I have an enumerable and wish to get distinct values from it.
18 Answers
18
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Is there a way of having git show lines added, lines changed and lines removed?
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You can use:
git diff --numstat
to get numerical diff information.
As far as separating modification from an add and remove pair, --word-diff might help. You could try something like this:
MOD_PATTERN='^.+(\[-|\{\+).*$' \
ADD_PATTERN='^\{\+.*\+\}$...
Why should hash functions use a prime number modulus?
A long time ago, I bought a data structures book off the bargain table for $1.25. In it, the explanation for a hashing function said that it should ultimately mod by a prime number because of "the nature of math".
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Static classes and methods in coffeescript
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You can define class methods by prefixing them with @:
class Box2DUtility
constructor: () ->
@drawWorld: (world, context) -> alert 'World drawn!'
# And then draw your world...
Box2DUtility.drawWorld()
Demo: http://jsfiddle.net/ambig...