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How can I convert this foreach code to Parallel.ForEach?
...w processes can be slower, as they're run serially
Process 2 can't start until 1 is done. Process 3 can't start until 2 & 1 are done...
Execution of quick processes can be faster, as there is no threading overhead
Parallel.ForEach:
Execution takes place in parallel way.
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What does 'public static void' mean in Java?
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the java runtime environment must call the main method to start your application. it couldn't do that when it were private.
– Philipp
Sep 4 '12 at 20:44
add a...
Inserting image into IPython notebook markdown
I am starting to depend heavily on the IPython notebook app to develop and document algorithms. It is awesome; but there is something that seems like it should be possible, but I can't figure out how to do it:
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MVC 4 @Scripts “does not exist”
...ce the release of MVC 4 System.Web.Optimization is now obsolete. If you're starting with a blank solution you will need to install the following nuget package:
Install-Package Microsoft.AspNet.Web.Optimization
You will still need to reference System.Web.Optimization in your web.config files. For ...
Hand Coded GUI Versus Qt Designer GUI [closed]
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Our experience with Designer started in Qt3.
Qt3
At that point, Designer was useful mainly to generate code that you would then compile into your application. We started using for that purpose but with all generated code, once you edit it, you can no l...
How to “properly” create a custom object in JavaScript?
...gramming languages, and in many places straight-up badly designed.)
Let's start with the prototype way. This is the most JavaScript-native you can get: there is a minimum of overhead code and instanceof will work with instances of this kind of object.
function Shape(x, y) {
this.x= x;
this...
How do you detect/avoid Memory leaks in your (Unmanaged) code? [closed]
...s some useful functions for detecting and debugging memory leaks.
I would start with this article:
https://msdn.microsoft.com/en-us/library/x98tx3cf(v=vs.140).aspx
Here is the quick summary of those articles. First, include these headers:
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#incl...
Rails: FATAL - Peer authentication failed for user (PG::Error)
...plication_production
pool: 5
username: my_application
password:
4) Start the postgres shell with this command:
$ psql
4a) You may get this error if your current user (as in your computer user) doesn't have a corresponding administration postgres role.
psql: FATAL: role "your_username" d...
How to use timeit module
...mpare two blocks of code / functions quickly you could do:
import timeit
start_time = timeit.default_timer()
func1()
print(timeit.default_timer() - start_time)
start_time = timeit.default_timer()
func2()
print(timeit.default_timer() - start_time)
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Titlecasing a string with exceptions
Is there a standard way in Python to titlecase a string (i.e. words start with uppercase characters, all remaining cased characters have lowercase) but leaving articles like and , in , and of lowercased?
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