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How to parse JSON in Scala using standard Scala classes?
...
This is a solution based on extractors which will do the class cast:
class CC[T] { def unapply(a:Any):Option[T] = Some(a.asInstanceOf[T]) }
object M extends CC[Map[String, Any]]
object L extends CC[List[Any]]
object S extends CC[String]
object D extend...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
...stion has the SERVER_NAME correctly configured. Taking Apache HTTPD as an example, here's an extract from its documentation:
If no ServerName is specified, then the server attempts to deduce the hostname by performing a reverse lookup on the IP address. If no port is specified in the ServerName,...
How can I pass a member function where a free function is expected?
...arify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), void* context) {
fptr(context, 17, 42);
}
void non_member(void*, int i0, int i1) {
std::cout << "I don't ne...
What is the difference between Xamarin.Form's LayoutOptions, especially Fill and Expand?
In Xamarin.Forms every View has the two properties HorizontalOptions and VerticalOptions . Both are of type LayoutOptions and can have one of the following values:
...
How to remove an element from a list by index
How do I remove an element from a list by index in Python?
18 Answers
18
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Resize a large bitmap file to scaled output file on Android
I have a large bitmap (say 3888x2592) in a file. Now, I want to resize that bitmap to 800x533 and save it to another file.
I normally would scale the bitmap by calling Bitmap.createBitmap method but it needs a source bitmap as the first argument, which I can't provide because loading the original ...
Which MIME type to use for a binary file that's specific to my program?
...program uses its own binary file type, so I assume I can't use MIME type text/plain, as it is not a 7-bit ASCII file.
4 Ans...
How do I update a formula with Homebrew?
...e old ways will still work if use append --force.
– mxcl
Feb 28 '12 at 17:37
2
When I run "brew u...
What is the difference between gsub and sub methods for Ruby Strings
...ng :gsub and it appears that they are essentially the same. Can anyone explain the difference to me? Thanks!
4 Answers
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Most efficient way to remove special characters from string
...thing that makes a method like this efficient is that it scales well. The execution time will be relative to the length of the string. There is no nasty surprises if you would use it on a large string.
Edit:
I made a quick performance test, running each function a million times with a 24 character ...