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How to autosize a textarea using Prototype?
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Facebook does it, when you write on people's walls, but only resizes vertically.
Horizontal resize strikes me as being a mess, due to word-wrap, long lines, and so on, but vertical resize seems to be pretty safe and nice.
None of the Facebook-using-newbies I know have ever mentioned anything abou...
Why does viewWillAppear not get called when an app comes back from the background?
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In other words, if someone looks at another application or takes a phone call, then switches back to your app which was earlier on backgrounded, your UIViewController which was already visible when you left your app 'doesn't care' so to speak -- as far as it is concerned, it's never disappeared an...
Best way to define private methods for a class in Objective-C
... you can create a category with an empty name (i.e. @interface MyClass ()) called Class Extension. What's unique about a class extension is that the method implementations must go in the same @implementation MyClass as the public methods. So I structure my classes like this:
In the .h file:
@inter...
There is already an open DataReader associated with this Command which must be closed first
...check for these repeated data loads can help speed up your data processing calls by reducing round trips.
– Chris Moschini
Dec 15 '12 at 18:11
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How to handle button clicks using the XML onClick within Fragments
... I've been doing during conversions is simply adding a click listener that calls the old event handler.
for instance:
final Button loginButton = (Button) view.findViewById(R.id.loginButton);
loginButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(final View v) ...
How to redirect to a 404 in Rails?
...you want to show a 404 page, create a render_404 method (or not_found as I called it) in ApplicationController like this:
def not_found
raise ActionController::RoutingError.new('Not Found')
end
Rails also handles AbstractController::ActionNotFound, and ActiveRecord::RecordNotFound the same way...
What part of Hindley-Milner do you not understand?
...atement saying "I can prove ... in a context Γ. These statements are also called type judgements.
Another thing to keep in mind: in math, just like ML and Scala, x : σ means that x has type σ. You can read it just like Haskell's x :: σ.
What each rule means
So, knowing this, the first expres...
Elegant ways to support equivalence (“equality”) in Python classes
...r class A(B):.
For classic-style classes, a comparison operation always calls the method of the first operand, while for new-style classes, it always calls the method of the subclass operand, regardless of the order of the operands.
So here, if Number is a classic-style class:
n1 == n3 calls ...
Find() vs. Where().FirstOrDefault()
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Just to complement: There is no need to call Where and First or FirstOrDefault: either First or FirstOrDefault allows you to specify a search predicate, making the Where call unnecessary
– Robson Rocha
Jul 6 '12 at 23:45
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Generate class from database table
...ation properties where the code it generates made 19,200 separate database calls to populate a 1000 row grid. This could have been achieved in a single database call. Nonetheless, it could just be that your technical architect does not want you to use EF and the like. So, you have to revert to code ...