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What is the Comonad typeclass in Haskell?
...Comonad typeclass are also welcome). I've vaguely heard about Comonad, but all I really know about it is that is provides extract :: w a -> a , sort of a parallel to Monad's return :: a -> m a .
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What arguments are passed into AsyncTask?
...t exactly should I put, and where exactly will it go? Do I need to include all 3 or can I include 1,2,20?
5 Answers
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How to REALLY show logs of renamed files with git?
...use the content as a whole has a meaningful history.
A file rename is a small special case of "content" moving between paths. You might have a function that moves between files which a git user might trackdown with "pickaxe" functionalitly (e.g. log -S).
Other "path" changes include combining and ...
RegEx: Smallest possible match or nongreedy match
How do I tell RegEx (.NET version) to get the smallest valid match instead of the largest?
3 Answers
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Strip html from string Ruby on Rails
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Yes, call this: sanitize(html_string, tags:[])
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Difference Between Invoke and DynamicInvoke
...ou just know that it is Delegate, it has to resolve the parameters etc manually - this might involve unboxing, etc - a lot of reflection is going on. For example:
Delegate slowTwice = twice; // this is still the same delegate instance
object[] args = { i };
object result = slowTwice.DynamicInvoke(a...
Comma in C/C++ macro
...his is also a problem for square brackets and braces, even though those usually occur as balanced pairs.) You can enclose the macro argument in parentheses:
FOO((std::map<int, int>), map_var);
The problem is then that the parameter remains parenthesized inside the macro expansion, which pr...
How to implement an abstract class in ruby?
I know there is no concept of abstract class in ruby. But if at all it needs to be implemented, how to go about it? I tried something like...
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What is Ember RunLoop and how does it work?
...machty.s3.amazonaws.com/ember-run-loop-visual/index.html
Update 5/9/2013: all the basic concepts below are still up to date, but as of this commit, the Ember Run Loop implementation has been split off into a separate library called backburner.js, with some very minor API differences.
First off, re...
How can I create directory tree in C++/Linux?
...C++ compilers.
/*
@(#)File: mkpath.c
@(#)Purpose: Create all directories in path
@(#)Author: J Leffler
@(#)Copyright: (C) JLSS 1990-2020
@(#)Derivation: mkpath.c 1.16 2020/06/19 15:08:10
*/
/*TABSTOP=4*/
#include "posixver.h"
#include "mkpath.h"
#include "emalloc...