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Defining and using a variable in batch file
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set "location=bob"
The last syntax prevents inadvertent trailing spaces from getting in the value, and also protects against special characters like & | etc.
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What's the opposite of chr() in Ruby?
...("C"))'
-e:1:in `printf': can't convert Array into Integer (TypeError)
from -e:1
$ ruby -e 'printf("0x%02X\n", "A".unpack("C")[0])'
0x41
$
I'm trying to write code that works on Ruby 1.8.1, 1.8.7 and 1.9.2.
Edited to pass C to unpack in uppercase, because unpack("c") gives me -1 where ord() ...
Why are functions and methods in PHP case-insensitive?
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Let me quote from Interview – PHP’s Creator, Rasmus Lerdorf
The first version of PHP was a simple set of tools that I put together for my Website and for a couple of projects. One tool did some fancy hit logging to an mSQL database, ...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...//I'm named!
}
}
In the above scenario, you can call globalFunction() from anywhere, but you cannot call localFunction1 or localFunction2.
What you're doing when you write (function() { ... })(), is you're making the code inside the first set of parentheses a function literal (meaning the whol...
How to empty/destroy a session in rails?
...if you want remove script-inserted key/value pairs (ex: Something inserted from a controller) and generate a new session. If you want reset only the key/value pairs you set, set those keys to nil.
– sargas
Apr 24 '14 at 22:33
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How to sum up elements of a C++ vector?
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I wanted to fix the typo from "accumuate" to "accumulate" by "edit", but was told by stackoverflow that "Edits must be at least 6 characters".
– aafulei
Jun 29 at 9:59
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undefined method `source_index' for Gem:Module (NoMethodError)
...st ran into this problem myself while trying to upgrade an older Rails app from REE 1.8.7 to 1.9.3-p385. Oddly, Ruby 1.9.3-p327 works just fine. What it came down to was ruby-1.9.3-p385 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has ...
How can I change the color of pagination dots of UIPageControl?
...stered then the view will not react to touch input.
It's completely fresh from the oven, but seems to work. Let me know if you run into any problems with it.
Future improvements:
Resize the dots to fit the current
bounds if there are too many.
Don't redraw the entire view in drawRect:
Examp...
In a Bash script, how can I exit the entire script if a certain condition occurs?
...tement will result in a complain (error message "return: can only `return' from a function or sourced script").
If exit <x> is used instead, when the script is invoked with source, it will result in exiting the shell that started the script, but an executable script will just terminate, as ex...
How to link to part of the same document in Markdown?
... be produced with links to the sections, and back to the table of contents from the section headings. It is similar with the other formats pandoc writes, like LaTeX, rtf, rst, etc. So with the command
pandoc --toc happiness.txt -o happiness.html
this bit of markdown:
% True Happiness
Introducti...