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How to create a protocol with methods that are optional?
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Protocols is set of rules. We can create protocols as below example:
TestProtocols.h
@protocol TestProtocols <NSObject>
@optional
-(void)testMethodOptional;
@required // by default
-(void)testMethodRequired;
@end...
How to avoid overflow in expr. A * B - C * D
... +1 You're the only one to notice this. The only tricky part is setting the compiler to do wrap-around overflow and checking if the correct result actually does fit into a long long.
– Mysticial
Nov 5 '12 at 18:27
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Passing a function with parameters as a parameter?
...nd() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.
It is supported by all major browsers, including IE9+.
Your code should look like this:
$(edit_link).cl...
Git Bash doesn't see my PATH
...e installing Git, you can select the option shown below, it'll help you to set the path automatically.
Its worked out for me :)
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UITableView + Add content offset at top
...or adding a blank cell is NOT what I want to do. Instead I just want an offset.
6 Answers
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RabbitMQ and relationship between channel and connection
...ort #.
Protocol parameters are negotiated on a per-client basis as part of setting up the connection (a process known as the handshake.
It is designed to be long-lived; there are few cases where connection closure is part of the protocol design.
From an OSI perspective, it probably resides somewhere...
Reason to Pass a Pointer by Reference in C++?
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50% of C++ programmers like to set their pointers to null after a delete:
template<typename T>
void moronic_delete(T*& p)
{
delete p;
p = nullptr;
}
Without the reference, you would only be changing a local copy of the pointer, not...
What is better: @SuppressLint or @TargetApi?
... basically disables the StrictModeHelper . However, Lint complains about setThreadPolicy() now and proposes to either add
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Merging two images in C#/.NET
...g = System.Drawing.Graphics.FromImage(finalImage))
{
//set background color
g.Clear(System.Drawing.Color.Black);
//go through each image and draw it on the final image
int offset = 0;
foreach (System.Drawing.Bitmap image in images)...
jQuery - Create hidden form element on the fly
...ew .attr" as a lot of people seems to think. You should still use .attr to set attributes.
– David Hellsing
Mar 25 '13 at 13:33
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