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What does default(object); do in C#?
..., and things like the Try... pattern:
bool TryGetValue(out T value) {
if(NoDataIsAvailable) {
value = default(T); // because I have to set it to *something*
return false;
}
value = GetData();
return true;
}
As it happens, I also use it in some code-generation, wher...
Sourcetree - undo unpushed commits
...ert: This command creates a new commit which will undo other commits. E.g. if you have a commit which adds a new file, git revert could be used to make a commit which will delete the new file.
About applying a soft reset: Assume you have the commits A to E (A---B---C---D---E) and you like to delete...
Nullable vs. int? - Is there any difference?
...
No difference.
int? is just shorthand for Nullable<int>, which itself is shorthand for Nullable<Int32>.
Compiled code will be exactly the same whichever one you choose to use.
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What is the C# version of VB.net's InputDialog?
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What if I want to get password from user?
– Himanshu Jansari
Apr 6 '13 at 7:05
3
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Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?
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If you use prepareForSegue:sender:then you won't have as much to change if you later decide to trigger the segue from some control outside the table view.
The prepareForSegue:sender: message is sent to the current view contr...
At runtime, find all classes in a Java application that extend a base class
... aClass : classes) {
System.out.println(aClass.getName());
if(aClass == ArrayList.class) {
List list = aClass.newInstance();
list.add("test");
System.out.println(list.getClass().getName() + ": " + list.size());
}
}
}
...
What is the use of ByteBuffer in Java? [closed]
...omings. You essentially use it whenever you need to do fast low-level I/O. If you were going to implement a TCP/IP protocol or if you were writing a database (DBMS) this class would come in handy.
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Backbone View: Inherit and extend events from parent
...s: function(){
var parentEvents = ParentView.prototype.events;
if(_.isFunction(parentEvents)){
parentEvents = parentEvents();
}
return _.extend({},parentEvents,{
'click' : 'onclickChild'
});
}
});
...
Java enum - why use toString instead of name
If you look in the enum api at the method name() it says that:
7 Answers
7
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Regex for numbers only
I haven't used regular expressions at all, so I'm having difficulty troubleshooting. I want the regex to match only when the contained string is all numbers; but with the two examples below it is matching a string that contains all numbers plus an equals sign like "1234=4321". I'm sure there's a way...