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Best practices for reducing Garbage Collector activity in Javascript
...iod, which is equivalent to allocation rate. Focus on these in descending order of rate.
The techniques are not rocket science. Avoid boxed objects when you can do with an unboxed one. Use global variables to hold and reuse single boxed objects rather than allocating fresh ones in each iteratio...
What is pseudopolynomial time? How does it differ from polynomial time?
...n the array, while in TSP n refers to the number of nodes in the graph. In order to standardize the definition of what "n" actually means in this context, the formal definition of time complexity defines the "size" of a problem as follows:
The size of the input to a problem is the number of bits...
HTML5 Pre-resize images before uploading
...canvas.toDataURL("image/jpeg", 0.5) to make sure the quality is brought in order to decrease the file size. I came across this comment on the mozilla blog post and saw the bug resolution here bugzilla.mozilla.org/show_bug.cgi?id=564388
– sbose
Jan 15 '13 at 10:...
Call a controller function from a directive without isolated scope in AngularJS
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Difference between variable declaration syntaxes in Javascript (including global variables)?
... the window object.) You can use a function to contain all of your code in order to contain your symbols, and that function can be anonymous if you like:
(function() {
var a = 0; // `a` is NOT a property of `window` now
function foo() {
alert(a); // Alerts "0", because `foo` can ...
Javascript object Vs JSON
...?
JSON is a data interchange format. It's a standard which describes how ordered lists and unordered maps, strings booleans and numbers can be represented in a string. Just like XML and YAML is a way to pass structured information between languages, JSON is the same. A JavaScript object on the oth...
Inheriting class methods from modules / mixins in Ruby
...on an instance of C, Ruby will look at every item of this ancestor list in order to find an instance method with the provided name. Since we included M into C, M is now an ancestor of C, so when we call foo on an instance of C, Ruby will find that method in M:
C.new.foo
#=> "foo"
Note that the...
PHPDoc type hinting for array of objects?
... /** @var TYPE $variable_name */ is the correct syntax; do not reverse the order of type and variable name (as suggested earlier in the comments) as that wont work in all cases.
– srcspider
Nov 29 '13 at 8:40
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What is “2's Complement”?
...nd that to mean -15?
The answer is that we change the meaning of the high-order bit (the leftmost one). This bit will be a 1 for all negative numbers. The change will be to change the sign of its contribution to the value of the number it appears in. So now our 11110001 is understood to represent...
Setting custom UITableViewCells height
...ew in my cell, and I want to get its height in heightForRowAtIndexPath: in order to set the row's height, but I don't know how to get it ! Thanks
– rdurand
Jul 24 '12 at 13:47
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