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SQL (MySQL) vs NoSQL (CouchDB) [closed]
...e
responsible for a lot of work that the
system takes care of automatically in
a relational database system. Similar
to what happens when you pick manual
over automatic transmission. Secondly,
NoSQL allows you to eke more
performance out of the system by
eliminating a lot of integrit...
What are the effects of exceptions on performance in Java?
Question: Is exception handling in Java actually slow?
18 Answers
18
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Map.clear() vs new Map : Which one will be better? [duplicate]
...stance, which is backed with new array. So, garbage collector should clear all the key and values from the previous map, and clear the reference to itself. So O(n) algorithm is executed anyway, but in the garbage collector thread. For 1000 records you won't see any difference.
BUT. The performance ...
Is either GET or POST more secure than the other?
...e would be to pass it using Secure HTTP.
GET or query string posts are really good for information required for either bookmarking a particular item, or for assisting in search engine optimization and indexing items.
POST is good for standard forms used to submit one time data. I wouldn't use G...
SQL SELECT speed int vs varchar
...ent date types:
int fields occupy between 2 and 8 bytes, with 4 being usually more than enough ( -2147483648 to +2147483647 )
character types occupy 4 bytes plus the actual strings.
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impro...
Spring AOP vs AspectJ
...the Decorator
pattern
Spring-AOP Cons
This is proxy-based AOP, so basically you can only use method-execution joinpoints.
Aspects aren't applied when calling another method within the same class.
There can be a little runtime overhead.
Spring-AOP cannot add an aspect to anything that is not crea...
Create a pointer to two-dimensional array
...d T[10] are different types.
The following alternative doesn't work at all, because the element type of the array, when you view it as a one-dimensional array, is not uint8_t, but uint8_t[20]
uint8_t *matrix_ptr = l_matrix; // fail
The following is a good alternative
uint8_t (*matrix_ptr)[...
How can Xml Documentation for Web Api include documentation from beyond the main project?
...gration into your Web Api projects appears to only handle situations where all of your API types are part of your WebApi project. In particular, it discusses how to reroute the XML documentation to App_Data/XmlDocument.xml and uncommenting a line in your config that will consume that file. This ...
How can I copy the output of a command directly into my clipboard?
... down the complete procedure just in case anyone else needs it.
First install a 16 kB program called xclip:
sudo apt-get install xclip
You can then pipe the output into xclip to be copied into the clipboard:
cat file | xclip
To paste the text you just copied, you shall use:
xclip -o
To si...
javascript: pause setTimeout();
...imilar to what you were suggesting in the question:
var Timer = function(callback, delay) {
var timerId, start, remaining = delay;
this.pause = function() {
window.clearTimeout(timerId);
remaining -= Date.now() - start;
};
this.resume = function() {
start =...