大约有 42,000 项符合查询结果（耗时：0.0376秒） [XML]
Why do I need to override the equals and hashCode methods in Java?
...
Joshua Bloch says on Effective Java
You must override hashCode() in every class that overrides equals(). Failure to do so will result in a violation of the general contract for Object.hashCode(), which will prevent your class from functioning properly in conjunction with all...
How to order by with union in SQL?
...
Just write
Select id,name,age
From Student
Where age < 15
Union
Select id,name,age
From Student
Where Name like "%a%"
Order by name
the order by is applied to the complete resultset
...
What is Hindley-Milner?
...n, match) => match.Substring(1, match.Length - 2)),
// For identifiers...
SExpressionSyntax.Token("[\\$_A-Za-z][\\$_0-9A-Za-z\\-]*", SExpressionSyntax.NewSymbol),
// ... and such
SExpressionSyntax.Token("[\\!\\&\\|\\<\\=\\>\\+\\-\\*\\/\\...
How do you join on the same table, twice, in mysql?
I have 2 tables. One (domains) has domain ids, and domain names (dom_id, dom_url).
3 Answers
...
Rotation methods deprecated, equivalent of 'didRotateFromInterfaceOrientation'?
...n methods have been deprecated). I'd like to know what the equivalent of didRotateFromInterfaceOrientation is now as there are a number of clean up tasks we need to perform and I can't see a block that we can assign to UIViewControllerTransitionCoordinator in order to be called when 'transition'...
Jquery If radio button is checked
I have these 2 radio buttons at the moment so that the user can decide whether they need postage included in the price or not:
...
Do DOM tree elements with ids become global variables?
Working on an idea for a simple HTMLElement wrapper I stumbled upon the following for Internet Explorer and Chrome :
5 An...
Routing with Multiple Parameters using ASP.NET MVC
...d we are thinking about using ASP.NET MVC. While designing our API, we decided to use calls like the one below for the user to request information from the API in XML format:
...
C# Sort and OrderBy comparison
...rue);
}
}
class Person
{
public Person(string id, string name)
{
Id = id;
Name = name;
}
public string Id { get; set; }
public string Name { get; set; }
}
static void Main()
{
List<Person>...
How can I generate an ObjectId with mongoose?
I'd like to generate a MongoDB ObjectId with Mongoose. Is there a way to access the ObjectId constructor from Mongoose?
...