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MySQL Great Circle Distance (Haversine formula)
...e SQL statement that will find the closest 20 locations that are within a radius of 25 miles to the 37, -122 coordinate. It calculates the distance based on the latitude/longitude of that row and the target latitude/longitude, and then asks for only rows where the distance value is less than 25, ord...
Differences between dependencyManagement and dependencies in Maven
...o consolidate and centralize the management of dependency versions without adding dependencies which are inherited by all children. This is especially useful when you have a set of projects (i.e. more than one) that inherits a common parent.
Another extremely important use case of dependencyManagem...
What is the purpose of python's inner classes?
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Quoted from http://www.geekinterview.com/question_details/64739:
Advantages of inner class:
Logical grouping of classes: If a class is useful to only one other class then it is logical to embed it in that class and keep the two together. Nesting such "helper classes" makes their pa...
Node.js + Nginx - What now?
....com.log;
# pass the request to the node.js server with the correct headers
# and much more can be added, see nginx config options
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $...
What is object slicing?
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ForceBru
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answered Nov 8 '08 at 11:22
David DibbenDavid Dibben
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How can I use threading in Python?
I am trying to understand threading in Python. I've looked at the documentation and examples, but quite frankly, many examples are overly sophisticated and I'm having trouble understanding them.
...
Java Interfaces/Implementation naming convention [duplicate]
...nterfaces you create?
Sometimes I don't have implementation information to add to the implementation name - like interface FileHandler and class SqlFileHandler .
...
What is @ModelAttribute in Spring MVC?
...llow access to the Person object in your View, since it gets automatically added to the Models by Spring.
See "Using @ModelAttribute".
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Are arrays passed by value or passed by reference in Java? [duplicate]
...his is NOT pass-by-reference. Real pass-by-reference involves passing the address of a variable. With real pass-by-reference, the called method can assign to its local variable, and this causes the variable in the caller to be updated.
But not in Java. In Java, the called method can update the...
How to multiply duration by integer?
To test concurrent goroutines, I added a line to a function to make it take a random time to return (up to one second)
5 An...