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Case-insensitive search in Rails model
...put. "#$$" is a little-known shortcut for escaping global variables with Ruby string interpolation. It's equivalent to "#{$$}". But string interpolation doesn't happen to user-input strings. Try these in Irb to see the difference: "$##" and '$##'. The first is interpolated (double-quotes). The secon...
Allowed characters in Linux environment variable names
...n any character except = and NUL, but:
Environment variable names used by the utilities in the Shell and
Utilities volume of IEEE Std
1003.1-2001 consist solely of uppercase letters, digits, and the '_'
(underscore) from the characters
defined in Portable Character Set and
do not begin...
new keyword in method signature
...
It means the method replaces a method by the same name inherited by the base class. In your case, you probably don't have a method by that name in the base class, meaning the new keyword is totally superfluous.
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Why shouldn't I use “Hungarian Notation”?
...n a wrong way and are getting wrong results.
Read this excellent article by Joel Spolsky: Making Wrong Code Look Wrong.
In short, Hungarian Notation where you prefix your variable names with their type (string) (Systems Hungarian) is bad because it's useless.
Hungarian Notation as it was intende...
Do git tags get pushed as well?
...ious choice.
Summarizing what Junio C. Hamano wrote (linked in comments by @Andre Miras)
When fetching, you are interacting with a remote repository somebody has published, which means:
the set of tags that exist there are all the publisher wanted people to see, and
not only you bu...
Why does std::getline() skip input after a formatted extraction?
...lar overload sets the delimiter to the newline character input.widen('\n') by default since one was not supplied.
Now, these are a few of the conditions whereby std::getline() terminates input:
If the stream has extracted the maximum amount of characters a std::basic_string<charT> can hold
If...
CSS3 transform not working
I am trying to transform my menu items by rotating them 10 degrees. My CSS works in Firefox but I've failed to replicate the effect in Chrome and Safari. I know IE doesn't support this CSS3 property so that's not a problem.
...
How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...hile - this means that the OS has decided to lower the battery consumption by stopping most User Land processes for a while, and turning Screen off, reducing CPU cycles, etc. The way this is done - is on a Linux system level where the processes are Paused mid run. This can happen at any time during ...
Ignoring directories in Git repositories on Windows
...te a file named .gitignore in your project's directory. Ignore directories by entering the directory name into the file (with a slash appended):
dir_to_ignore/
More information is here.
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How to compare two colors for similarity/difference
...t percentage. The thing is that I don't know how to do that manually step by step. So it is even more difficult to think of a program.
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