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MySQL Great Circle Distance (Haversine formula)
I've got a working PHP script that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code:
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When should I release objects in -(void)viewDidUnload rather than in -dealloc?
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In addition to what has already been indicated, I wanted to elaborate more about logic behind -viewDidUnload.
One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain ...
Undefined, unspecified and implementation-defined behavior
What is undefined behavior in C and C++? What about unspecified behavior and implementation-defined behavior? What is the difference between them?
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Physical vs. logical / soft delete of database record?
What is the advantage of doing a logical/soft delete of a record (i.e. setting a flag stating that the record is deleted) as opposed to actually or physically deleting the record?
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Cross-browser testing: All major browsers on ONE machine
...owsers have to be tested?
Rules of thumb: Which browsers should be included?
Preparation
Windows XP
Windows 7+ (for IE9+)
Browser downloads
Internet Explorer
Firefox
Opera
Chrome
Safari
Adobe Flash Player
Download summary
Sandboxie
Part 2: Insta...
How to loop through a plain JavaScript object with the objects as members?
How can I loop through all members in a JavaScript object including values that are objects.
24 Answers
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Why does C# allow {} code blocks without a preceding statement?
Why does C# allow code blocks without a preceding statement (e.g. if , else , for , while )?
9 Answers
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What is the advantage of using abstract classes instead of traits?
What is the advantage of using an abstract class instead of a trait (apart from performance)? It seems like abstract classes can be replaced by traits in most cases.
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Why do I have to access template base class members through the this pointer?
If the classes below were not templates I could simply have x in the derived class. However, with the code below, I have to use this->x . Why?
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Is there a difference between “throw” and “throw ex”?
...nce;
throw ex resets the stack trace (so your errors would appear to originate from HandleException)
throw doesn't - the original offender would be preserved.
static void Main(string[] args)
{
try
{
Method2();
}
catch (Exception ex)
{
Console.Write(ex.StackTrac...