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How does the String class override the + operator?
...emp="x = "+x;
The compiler converts "x = "+x; into a StringBuilder internally and uses .append(int) to "add" the integer to the string.
5.1.11. String Conversion
Any type may be converted to type String by string conversion.
A value x of primitive type T is first converted to a referenc...
Confused by python file mode “w+”
...rns 'somedata\n'
Note the f.seek(0) -- if you forget this, the f.read() call will try to read from the end of the file, and will return an empty string.
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Otherwise on StateProvider
...an I use the otherwise method on $stateProvider or how can I use it at all ?
6 Answers
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git: difference between “branchname” and “refs/heads/branchname”
...ee heads, remotes, and tags in your .git/refs directory, assuming you have all three types of refs in your repository.
refs/heads/0.58 specifies a branch named 0.58. If you don't specify what namespace the ref is in, git will look in the default ones. This makes using only 0.58 conceivably ambiguous...
How do the major C# DI/IoC frameworks compare? [closed]
...Core (site is German)
LinFu
Ninject
Petite
Simple Injector (the fastest of all contestants)
Spring.NET
StructureMap
Unity
Windsor
Hiro
Here is a quick summary from the post:
Conclusion
Ninject is definitely the slowest container.
MEF, LinFu and Spring.NET are faster than Ninject, but still pretty
...
ReactJS Two components communicating
...s a handler from <List /> to <Filters />, which could then be called on the onChange event to filter the list with the current value.
JSFiddle for #1 →
/** @jsx React.DOM */
var Filters = React.createClass({
handleFilterChange: function() {
var value = this.refs.filterInput.ge...
Why shouldn't Java enum literals be able to have generic type parameters?
Java enums are great. So are generics. Of course we all know the limitations of the latter because of type erasure. But there is one thing I don't understand, Why can't I create an enum like this:
...
What are the primary differences between TDD and BDD? [closed]
...cating your intent.
TDD directs focus on testing. And since in "old waterfall world" tests come after implementation, then this mindset leads to wrong understanding and behaviour.
BDD directs focus on behaviour and specification, and so waterfall minds are distracted. So BDD is more easily underst...
How to send an object from one Android Activity to another using Intents?
...out.writeInt(mData);
}
// this is used to regenerate your object. All Parcelables must have a CREATOR that implements these two methods
public static final Parcelable.Creator<MyParcelable> CREATOR = new Parcelable.Creator<MyParcelable>() {
public MyParcelable createF...
Group a list of objects by an attribute : Java
... list);
} else {
hashMap.get(locationId).add(student);
}
If you want all the student with particular location details then you can use this:
hashMap.get(locationId);
which will get you all the students with the same the location ID.
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