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When would you use delegates in C#? [closed]
...ionString = psConnectionString;
}
public void UseReader( string psSELECT, DataReaderUser readerUser )
{
using ( SqlConnection connection = new SqlConnection( _connectionString ) )
try
{
SqlCommand command = new SqlCommand( psSELECT, connection );
...
jQuery how to bind onclick event to dynamically added HTML element [duplicate]
...ode. But here he was inserting the elements himself, and there is no clear selector for them (it's just an anchor, which there might be many of), so he would have to add additional markup to be able to target the element. In that case it's just as easy to attach the handler to the element directly, ...
Is there a way to create multiline comments in Python?
...
In any case, your text editor should also be able to easily comment-out a selected region (by placing a # in front of each line individually). If not, switch to a text editor that does.
Programming in Python without certain text editing features can be a painful experience. Finding the right edito...
UINavigationController without navigation bar?
...
In Xcode 4.3.2:
Select the navigation controller in the storyboard
Select the Attributes Inspector in the (right) Utilities panel
Under the Navigation Controller category you have two check boxes:
[] Shows Navigation Bar
[] Shows Toolbar
...
Would it be beneficial to begin using instancetype instead of id?
...ype that, as far as I can see, replaces id as a return type in -alloc and init .
4 Answers
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How are virtual functions and vtable implemented?
...t 1 virtual function. There is a space overhead associated with the vtable and a time overhead associated with calling a virtual function vs a non-virtual function.
Do abstract classes simply have a NULL for the function pointer of at least one entry?
The answer is it is unspecified by the languag...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
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Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
...g.ARGB_8888;
Bitmap bitmap = BitmapFactory.decodeFile(photoPath, options);
selected_photo.setImageBitmap(bitmap);
or
http://mihaifonoage.blogspot.com/2009/09/displaying-images-from-sd-card-in.html
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How expensive is RTTI?
I understand that there is a resource hit from using RTTI, but how big is it? Everywhere I've looked just says that "RTTI is expensive," but none of them actually give any benchmarks or quantitative data reguarding memory, processor time, or speed.
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Get value from hidden field using jQuery
...t to assign identifier to the hidden field; you can use name or class with selector like:
$('input[name=hiddenfieldname]').val();
or with assigned class:
$('input.hiddenfieldclass').val();
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