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Unix command to find lines common in two files
... @ferdy (Repeating my comment from your answer, as yours is essentially a repeated answer posted as a comment) grep does some weird things you might not expect. Specifically, everything in 1.txt will be interpreted as a regular expression and not a plain string. Also, any blank line in 1.txt...
How can I maximize a split window?
... a reputable source, I'm going to hold that as your personal preference, really. I'm usually not using them, but I've recently found I'm using them for thigns like this (maximizing a sidebuffer temporarily; doing power stuff like having multiple disjoint side-by-side diffs in a single vim session). ...
Get selected element's outer HTML
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I believe that currently (5/1/2012), all major browsers support the outerHTML function. It seems to me that this snippet is sufficient. I personally would choose to memorize this:
// Gives you the DOM element without the outside wrapper you want
$('.classSele...
How can I read command line parameters from an R script?
...t. In the result you'll get:
example.png with some plot
exmpl.batch with all that was done
You could also add an environment variable %R_Script%:
"C:\Program Files\R-3.0.2\bin\RScript.exe"
and use it in your batch scripts as %R_Script% <filename.r> <arguments>
Differences between...
How do you divide each element in a list by an int?
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The way you tried first is actually directly possible with numpy:
import numpy
myArray = numpy.array([10,20,30,40,50,60,70,80,90])
myInt = 10
newArray = myArray/myInt
If you do such operations with long lists and especially in any sort of scientific com...
Building a complete online payment gateway like Paypal [closed]
...in, but by this I dont mean a local bank branch. Each major bank will generally have a separate card acquiring arm. So here in the UK we have (eg) Natwest bank, which uses Streamline (or Worldpay) as its acquiring arm. In total even though we have scores of major banks, they all end up using one of ...
How do I best silence a warning about unused variables?
I have a cross platform application and in a few of my functions not all the values passed to functions are utilised. Hence I get a warning from GCC telling me that there are unused variables.
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What is the naming convention in Python for variable and function names?
... C# background the naming convention for variables and method names are usually either camelCase or PascalCase:
13 Answers
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psql: FATAL: database “” does not exist
... it in the past on other machines but it's giving me some trouble when installing on my macbook. I've installed the application and I ran:
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How do I compare two string variables in an 'if' statement in Bash? [duplicate]
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@Sangimed, [ is a command (actually, an alternate name for the command called test); if you run which [, you'll see there's actually an executable file for it on disk (even though the shell may provide a built-in implementation as a performance optimizatio...