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Explain the “setUp” and “tearDown” Python methods used in test cases
...top in the place where it was started - this means that we have to restore app state to it's initial state - e.g close files, connections, removing newly created items, calling transactions callback and so on - all these steps are to be included into the tearDown.
So the idea is that test itself sh...
How to know user has clicked “X” or the “Close” button?
...nd on MSDN is just for the purpose of checking whether the user closed the app, or it was due to a shutdown, or closed by the task manager, etc...
You can do different actions, according to the reason, like:
void Form_FormClosing(object sender, FormClosingEventArgs e)
{
if(e.CloseReason == Clo...
Catching all javascript unhandled exceptions
...o display in an alert box all of the unhandled javascript exceptions in an application. I'd want all of this to be done on the client side, without using any server side code. I'm using MVC3 as an environment.
...
Django filter queryset __in for *every* item in list
...ld not be a problem for small set of categories.
There is the aggregation approach. This query would be shorter and perhaps quicker for a large set of categories.
You also have the option of using custom queries.
Some examples
Test setup:
class Photo(models.Model):
tags = models.ManyToMan...
Android: Difference between onInterceptTouchEvent and dispatchTouchEvent?
... the touch point coordinates.
But before it can dispatch the event to the appropriate child view, the parent can spy and/or intercept the event all together. This is what onInterceptTouchEvent is there for. So it calls this method first before doing the hit testing and if the event was hijacked (by...
When do items in HTML5 local storage expire?
.../Web/API/Window/localStorage
Of course, it's possible that something your application stores on the client may not be there later. The user can explicitly get rid of local storage, or the browser may run into space considerations. It's good to program defensively. Generally however things remain "...
Enable Vim Syntax Highlighting By Default
...m scratch. Instead, pickup the example vimrc from the following location: /Applications/MacVim.app/Contents/Resources/vim/runtime/vimrc_example.vim. Copy this file to your $HOME as .vimrc. It switches on a lot of basic stuff for you automatically (syntax, search highlighting, backup etc). You can th...
What is a practical use for a closure in JavaScript?
...updateClickCount()">click me</button>
Now there could be many approaches like:
1) You could use a global variable, and a function to increase the counter:
var counter = 0;
function updateClickCount() {
++counter;
// do something with counter
}
But, the pitfall is that any s...
What is so bad about singletons? [closed]
...al instance, why is that so bad? Because you hide the dependencies of your application in your code, instead of exposing them through the interfaces. Making something global to avoid passing it around is a code smell.
They violate the single responsibility principle: by virtue of the fact that they ...
Is there any reason to use a synchronous XMLHttpRequest?
...ink they might become more popular as HTML 5 standards progress. If a web application is given access to web workers, I could foresee developers using a dedicated web worker to make synchronous requests for, as Jonathan said, to ensure one request happens before another. With the current situation...