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How to Copy Contents of One Canvas to Another Canvas Locally
...ur destination canvas
var destCtx = destinationCanvas.getContext('2d');
//call its drawImage() function passing it the source canvas directly
destCtx.drawImage(sourceCanvas, 0, 0);
Way faster than using an ImageData object or Image element.
Note that sourceCanvas can be a HTMLImageElement, HTMLV...
Firefox Add-on RESTclient - How to input POST parameters?
...value2
Once you copy such type of URL in Firefox REST client make a POST call to the server you want
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What are metaclasses in Python?
...lass is an instance of a metaclass.
While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it an actual class itself. type is the usual metaclass in Python. type is itself a class, and it is its own type. You won't be able to recreate some...
python max function using 'key' and lambda expression
...es the items using their original values (strings are compared lexicographically so you'd get '2' as output) :
>>> max(lis)
'2'
To compare the items by their integer value use key with a simple lambda:
>>> max(lis, key=lambda x:int(x)) # compare `int` version of each item
'111...
Mocking Extension Methods with Moq
...eworks that use .NET's profiler API to mock objects and so can replace any calls. The two I know are Telerik's JustMock and TypeMock Isolator.
– Marcel Gosselin
Aug 24 '11 at 4:34
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What is the difference between Caching and Memoization?
... memoization is.
As I see it, both involve avoiding repeated function calls to get data by storing it .
5 Answers
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How to set the prototype of a JavaScript object that has already been instantiated?
...current prototype. The way it works is whenever a property on an object is called it will start at the object and then go up through the [[prototype]] chain until it finds a match, or fail, after the root Object prototype. This is how Javascript allows for runtime building and modification of object...
Python Regex instantly replace groups
...stitution (replace) function. The replacement string can be filled with so-called backreferences (backslash, group number) which are replaced with what was matched by the groups. Groups are counted the same as by the group(...) function, i.e. starting from 1, from left to right, by opening parenthes...
Iterate over the lines of a string
...1())'
10000 loops, best of 3: 61.5 usec per loop
Note we need the list() call to ensure the iterators are traversed, not just built.
IOW, the naive implementation is so much faster it isn't even funny: 6 times faster than my attempt with find calls, which in turn is 4 times faster than a lower-le...
How to iterate over arguments in a Bash script
...d I found
long ago that I needed a program that is not standard on Unix.
I call it escape (version 1.1 was dated 1989-08-23T16:01:45Z).
Here is an example of escape in use - with the SCCS control system.
It is a cover script that does both a delta (think check-in) and a
get (think check-out).
Vario...