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Which version of CodeIgniter am I currently using?
.../codeigniter/CodeIgniter.php As of CodeIgniter 2, it's defined in /system/core/CodeIgniter.php
For example,
echo CI_VERSION; // echoes something like 1.7.1
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How can I delete a newline if it is the last character in a file?
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perl -pe 'chomp if eof' filename >filename2
or, to edit the file in place:
perl -pi -e 'chomp if eof' filename
[Editor's note: -pi -e was originally -pie, but, as noted by several commenters and explained by @hvd, the latter doesn't work.]
This was described as a '...
Node.js or Erlang
...lang a try. Even though it will be a steeper learning curve, you will get more out of it since you will be learning a functional programming language. Also, since Erlang is specifically designed to create reliable, highly concurrent systems, you will learn plenty about creating highly scalable servi...
@ variables in Ruby on Rails
...names. Also, how do I decide which kind of variable I should use? With @ or not?
7 Answers
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MPICH vs OpenMPI
Can someone elaborate the differences between the OpenMPI and MPICH implementations of MPI ?
Which of the two is a better implementation ?
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Variable declaration in a C# switch statement [duplicate]
Why is it that in a C# switch statement, for a variable used in multiple cases, you only declare it in the first case?
7 An...
Using regular expressions to parse HTML: why not?
...y question on stackoverflow where the asker is using regex to grab some information from HTML will inevitably have an "answer" that says not to use regex to parse HTML.
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How do I check for null values in JavaScript?
How can I check for null values in JavaScript? I wrote the code below but it didn't work.
19 Answers
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Fundamental difference between Hashing and Encryption algorithms
I see a lot of confusion between hashes and encryption algorithms and I would like to hear some more expert advice about:
1...
Difference between GeoJSON and TopoJSON
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If you care about file size or topology, then use TopoJSON. If you don’t care about either, then use GeoJSON for simplicity’s sake.
The primary advantage of TopoJSON is size. By eliminating redundancy and using a more efficent fixed-precision integ...