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Difference between viewDidLoad and viewDidAppear
...nce between viewDidLoad and viewDidAppear ? What kind of initialization or custom code goes into those functions?
2 Answ...
When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
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Relational databases enforces ACID. So, you will have schema based transaction oriented data stores. It's proven and suitable for 99% of the real world applications. You can practically do anything with relational databases.
But, there are limitati...
$(window).scrollTop() vs. $(document).scrollTop()
...ct.
However, as pointed out in the comments: $(window).scrollTop() is supported by more web browsers than $('html').scrollTop().
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What's the difference between ngModel.$modelValue and ngModel.$viewValue
I have the following ckEditor directive. At the bottom are two variations that I have seen from examples on how to set the data in the editor:
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Where should Rails 3 custom validators be stored?
I've seen docs/websites show that custom validators should go in a /lib or /lib/validators directory of a project. I've found (by reading an answer to another post) that they only seem to work in config/initializers . Does anyone know, or have a pointer to official documentation that shows wher...
How to replace an item in an array with Javascript?
... items[index] = 1010;
}
Also it is recommend you not use the constructor method to initialize your arrays. Instead, use the literal syntax:
var items = [523, 3452, 334, 31, 5346];
You can also use the ~ operator if you are into terse JavaScript and want to shorten the -1 comparison:
var ind...
Run class in Jar file
...e then simply java -cp myjar.jar myClass.
If you are not within the directory where myJar.jar is located, then you can do:
On Unix or Linux platforms:
java -cp /location_of_jar/myjar.jar com.mypackage.myClass
On Windows:
java -cp c:\location_of_jar\myjar.jar com.mypackage.myClass
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How to find the width of a div using vanilla JavaScript?
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That, or cientWidth, altho I don't know the real difference.
– JCOC611
Jan 24 '11 at 21:51
127
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Canvas width and height in HTML5
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The canvas DOM element has .height and .width properties that correspond to the height="…" and width="…" attributes. Set them to numeric values in JavaScript code to resize your canvas. For example:
var canvas = document.getElementsByTagName('canvas')[0];
canvas.width = 800;
canvas...
Using parameters in batch files at Windows command line
...eters specified in the command line -- this is very useful if you want to forward the parameters to another program.
There are also lots of important techniques to be aware of in addition to simply how to access the parameters.
Checking if a parameter was passed
This is done with constructs like...