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HTML/Javascript change div content
...han pure js solution: 69% on firefox, 61% on safari, 56% on chrome. The fastest browser for pure js was firefox with 560M operations per second, the second was safari 426M, and slowest was chrome 122M.
So the winners are pure js and firefox (3x faster than chrome!)
You can test it in your machin...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
...xample for unstanding the fat arrow
not works: (@canvas undefined)
class Test
constructor: ->
@canvas = document.createElement 'canvas'
window.addEventListener 'resize', ->
@canvas.width = window.innerWidth
@canvas.height = window.innerHeight
works: (@canvas defined)
...
Python using enumerate inside list comprehension
...
+1 I did not test it, but I'll bet [t for t in enumerate(my list)] is even faster.
– the wolf
May 27 '12 at 22:58
...
Method overloading in Objective-C?
...Number class) to the method and then from within the method itself you can test its type and throw the appropriate exception if necessary. Although this does have a minor performance hit, it will most likely be nominal or insignificant unless you are processing large quantities of data.
- (void) w...
Using Vim's persistent undo?
...vimrc to create an undodir if it doesn't exist and enable persistent undo. Tested on both Windows and Linux.
" Put plugins and dictionaries in this dir (also on Windows)
let vimDir = '$HOME/.vim'
let &runtimepath.=','.vimDir
" Keep undo history across sessions by storing it in a file
if has('p...
CSS table column autowidth
... width 100% and no other columns have widths. Applied this to one column). Tested in IE7/8/9, Firefox 12 and Chrome 19.
– marcovtwout
Jun 20 '12 at 14:12
...
Good or bad practice? Initializing objects in getter
...Modern computers have way enough memory. Without a case of actual problems confirmed by a profiler, this is pre-mature optimization and there are good reasons against it.
I acknowledge the fact that sometimes this kind of optimization is justified. But even in these cases lazy initialization doesn't...
Comparing arrays in JUnit assertions, concise built-in way?
...ll sized arrays, but I rarely use arrays with more items than 7 in my unit tests.
This method works for primitive types and for other types when overload of toString returns all essential information.
share
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Caveats of select/poll vs. epoll reactors in Twisted
...
In tests at my company, one issue with epoll() came up, thus a single cost compared to select.
When attempting to read from the network with a timeout, creating an epoll_fd ( instead of a FD_SET ), and adding the fd to the epol...
Detecting a redirect in ajax request?
... = function () {
xhr = _orgAjax();
return xhr;
};
jQuery.ajax('http://test.com', {
success: function(responseText) {
console.log('responseURL:', xhr.responseURL, 'responseText:', responseText);
}
});
It's not a clean solution and i suppose jQuery team will make something for responseU...