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Give examples of functions which demonstrate covariance and contravariance in the cases of both over
...le of contravariance.
Generics
This is also possible for Generics:
List<String> aList...
List<? extends Object> covariantList = aList;
List<? super String> contravariantList = aList;
You can now access all methods of covariantList that doesn't take a generic parameter (as it m...
How to paste in a new line with vim?
...ys:
:[line]pu[t] [x] Put the text [from register x] after [line] (default
current line). This always works |linewise|, thus
this command can be used to put a yanked block as
new lines.
:[line]pu[t]! [x] Put the text [from register x...
Generate a Hash from string in Javascript
...ode', {
value: function() {
var hash = 0, i, chr;
for (i = 0; i < this.length; i++) {
chr = this.charCodeAt(i);
hash = ((hash << 5) - hash) + chr;
hash |= 0; // Convert to 32bit integer
}
return hash;
}
});
Source:
http://werxltd.com/wp/2010/05/13/...
How can I get a web site's favicon?
... open often-used sites/folders/files from the same place. Getting the default icons from my system for known file types isn't terribly complicated, but I don't know how to get the favicon from a website. (SO has the grey->orange stack icon in the address bar for instance)
...
How can I pass a constant value for 1 binding in multi-binding?
I have a multi-binding like
4 Answers
4
...
Use CSS to automatically add 'required field' asterisk to form inputs
...
Is that what you had in mind?
http://jsfiddle.net/erqrN/1/
<label class="required">Name:</label>
<input type="text">
<style>
.required:after {
content:" *";
color: red;
}
</style>
.required:after {
content:" *";
color: red;
}
&l...
How do you embed binary data in XML?
...
XML is so versatile...
<DATA>
<BINARY>
<BIT index="0">0</BIT>
<BIT index="1">0</BIT>
<BIT index="2">1</BIT>
...
<BIT index="n">1</BIT>
</BINARY>
</DATA>
...
CSS: Change image src on img:hover
I need to change <img> source URL on hover .
20 Answers
20
...
How do I sort a list by different parameters at different timed
I have a class named Person with multiple properties, for example:
9 Answers
9
...
Shrink a YouTube video to responsive width
...strap.com/components/#responsive-embed
There's some example code below.
<!-- 16:9 aspect ratio -->
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item" src="..."></iframe>
</div>
<!-- 4:3 aspect ratio -->
<div class="...