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Call apply-like function on each row of dataframe with multiple arguments from each row
...ataframe with multiple columns. For each row in the dataframe, I want to call a function on the row, and the input of the function is using multiple columns from that row. For example, let's say I have this data and this testFunc which accepts two args:
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Fastest way to tell if two files have the same contents in Unix/Linux?
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Why don't you get the hash of both files content?
Try this script, call it for example script.sh and then run it as follows: script.sh file1.txt file2.txt
#!/bin/bash
file1=`md5 $1`
file2=`md5 $2`
if [ "$file1" = "$file2" ]
then
echo "Files have the same content"
else
echo "Files h...
Parsing huge logfiles in Node.js - read in line-by-line
...or a solution to parse very large files (gbs) line by line using a stream. All the third-party libraries and examples did not suit my needs since they processed the files not line by line (like 1 , 2 , 3 , 4 ..) or read the entire file to memory
The following solution can parse very large files, li...
How to filter SQL results in a has-many-through relation
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I was curious. And as we all know, curiosity has a reputation for killing cats.
So, which is the fastest way to skin a cat?
The precise cat-skinning environment for this test:
PostgreSQL 9.0 on Debian Squeeze with decent RAM and settings.
6.000 ...
What are the differences in die() and exit() in PHP?
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aliases allows programmers to use the one which is comfortable with. I remember exit better than die. Some others remember die better than exit.
– mauris
Nov 25 '09 at 6:35
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Input placeholders for Internet Explorer
HTML5 introduced the placeholder attribute on input elements, which allows to display a greyed-out default text.
17 Ans...
Java Immutable Collections
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Unmodifiable collections are usually read-only views (wrappers) of other collections. You can't add, remove or clear them, but the underlying collection can change.
Immutable collections can't be changed at all - they don't wrap another collection - they h...
jQuery Mobile: document ready vs. page events
...date:
My original article was intended for old way of page handling, basically everything before jQuery Mobile 1.4. Old way of handling is now deprecated and it will stay active until (including) jQuery Mobile 1.5, so you can still use everything mentioned below, at least until next year and jQuery...
What is a Portable Class Library?
...for such purposes.
UPDATE Apr 19 2013: Excellent dense summary of how it all hangs together from Intellisense through to run time in a blog post by Simon Cooper
Video: Channel 9 Visual Studio Toolbox show episode 14 June 2012
Video: Channel 9 Going Deep Show episode 27 Sep 2011
UPDATE Sep 1...
How do I make Git ignore file mode (chmod) changes?
...it handles the
executable bit correctly and this variable is automatically
set as necessary.
A repository, however, may be on a filesystem that handles
the filemode correctly, and this variable is set to true when
created, but later may be made accessible from another
envir...