大约有 40,000 项符合查询结果（耗时：0.0273秒） [XML]
What is Lazy Loading?
...ects unnecessarily. For instance if you have a "Customer" class which has "Orders" object aggregated. So you like to load the customer data but the orders objects you would like to delay until your application needs it.
Below is a youtube video which demonstrates how to use lazy loading , how we ...
What's a “static method” in C#?
...) { return 1; }
public static int StaticMethod() { return 42; }
}
In order to call InstanceMethod, you need an instance of the class:
SomeClass instance = new SomeClass();
instance.InstanceMethod(); //Fine
instance.StaticMethod(); //Won't compile
SomeClass.InstanceMethod(); //Won't co...
What Computer Science concepts should I know? [closed]
...s, but find wikipedia too academic :D
Anyway, here goes, in no particular order:
The relational model: Introduction to Database systems
Object orientation : Object Thinking
Complexity and computation theory (think Turing machines and automata): Introduction to theory of computation
A little compi...
Sort array of objects by string property value
...y their value that you pass:
function dynamicSort(property) {
var sortOrder = 1;
if(property[0] === "-") {
sortOrder = -1;
property = property.substr(1);
}
return function (a,b) {
/* next line works with strings and numbers,
* and you may want to cu...
javascript toISOString() ignores timezone offset [duplicate]
...r many years offline just to note that this answer allow to format Date in order for a .NET API to receive a date with the TimeZone and deserialize it properly. It's not that bad to have moment.js in a js project, knowing how much the Date API from ECMAScript lacks of functionalities.
...
The static keyword and its various uses in C++
...erwise), and then non-locals are "dynamically initialized" properly in the order they are defined in the translation unit (for things like std::string="HI"; that aren't constexpr). Finally, function-local statics will be initialized the first time execution "reaches" the line where they are declar...
What is /dev/null 2>&1?
...nal. It is because we are not redirecting error output to /dev/null, so in order to redirect error output as well, it is required to add 2>&1:
$ ls -l file_doesnot_exists > /dev/null 2>&1
share
|
...
Entity Framework and SQL Server View
...issues using Tillito solution. Lets say you have the table:
Create table OrderDetail
(
Id int primary key,
CustomerId int references Customer(Id),
Amount decimal default(0)
);
Create index ix_customer on OrderDetail(CustomerId);
and your view is something like thi...
Best architectural approaches for building iOS networking applications (REST clients)
...er declares services which we use for interacting with external systems in order to send or receive data which is represented in our domain model. So usually we have services for communication with server APIs (per entity), messaging services (like PubNub), storage services (like Amazon S3), etc. Ba...
Should I pass a shared_ptr by reference? [duplicate]
...t. Let us define a shared pointer type SF = std::shared_ptr<Foo>. In order to consider references, rather than passing function arguments let us look at the type RSF = std::reference_wrapper<T>. That is, if we have a shared pointer SF p(std::make_shared<Foo>());, then we can make a...