大约有 43,000 项符合查询结果（耗时：0.0400秒） [XML]
When should I use a struct instead of a class?
...
I am surprised I have not read at any of the previous answer this, which I consider the most crucial aspect :
I use structs when I want a type with no identity. For example a 3D point:
public struct ThreeDimensionalPoint
{
public readonly int X,...
How do I disable form fields using CSS?
...
I wanted to "disable" the last link of a breadcrumb, and I wasn't with this workaround in mind... thanks to this with some color change and without underline, it made the trick! :D
– Facundo Colombier
Apr 9 '15 at 21:59
...
What is the string length of a GUID?
...omment about 'digits only' with the "N" option is a bit tricky! You should read it as without braces & hyphens
– Jowen
Jul 23 '14 at 13:15
|
...
How to use Global Variables in C#?
...ic static String FILE_NAME = "Output.txt"; // Modifiable
public static readonly String CODE_PREFIX = "US-"; // Unmodifiable
}
You can then retrieve the defined values anywhere in your code (provided it's part of the same namespace):
String code = Globals.CODE_PREFIX + value.ToString();
In o...
What is the correct way of using C++11's range-based for?
... copy ctor.
3 X copy ctor.
5 X copy ctor.
7 X copy ctor.
9
As it can be read from the output, copy constructor calls are made during range-based for loop iterations.
This is because we are capturing the elements from the container by value
(the auto x part in for (auto x : v)).
This is ineffici...
What is a “slug” in Django?
When I read Django code I often see in models what is called a "slug". I am not quite sure what this is, but I do know it has something to do with URLs. How and when is this slug-thing supposed to be used?
...
Dump a NumPy array into a csv file
...rray into a CSV file? I have a 2D NumPy array and need to dump it in human-readable format.
11 Answers
...
Copying data from one SQLite database to another
...
This is kind of obvious ... but if there is already a table with that name in the target-database, it is not possible. So it is not possible to add to already existing data with that solution (great otherwise)
– Martin Meeser
Jan 25...
Public Fields versus Automatic Properties
...t a variable. A usual thing to do is to declare a local variable (possibly read the property an put its value into the local variable), pass the local variable as ref/out, and then set the property to the value the local variable then has. But then the method called does not itself access the proper...
SQL - many-to-many table primary key
This question comes up after reading a comment in this question:
5 Answers
5
...