大约有 47,000 项符合查询结果（耗时：0.0495秒） [XML]
What is Func, how and when is it used
...
Func<T> is a predefined delegate type for a method that returns some value of the type T.
In other words, you can use this type to reference a method that returns some value of T. E.g.
public static string GetMessage() { return "Hello world"; }
may be referenced li...
What is the email subject length limit?
... field is logically a
single line of characters comprising
the field name, the colon, and the
field body. For convenience however,
and to deal with the 998/78 character
limitations per line, the field body
portion of a header field can be split
into a multiple line representation;
t...
How to convert image to byte array
...[] ImageToByteArray(System.Drawing.Image imageIn)
{
using (var ms = new MemoryStream())
{
imageIn.Save(ms,imageIn.RawFormat);
return ms.ToArray();
}
}
C# Image to Byte Array and Byte Array to Image Converter Class
...
How to set JVM parameters for Junit Unit Tests?
I have some Junit unit tests that require a large amount of heap-space to run - i.e. 1G. (They test memory-intensive functionality for a webstart app that will only run with sufficient heap-space, and will be run internally on Win 7 64-bit machines - so redesigning the tests isn't a practical sugges...
Setting transparent images background in IrfanView
I have some PNG images which consist of a black shape and a transparent background.
Unfortunately, IrfanView shows transparent background as black color, so I see just black on black. I've found in Irfan settings that I can change the window's background color, but it changes only around the image, ...
Entity Framework: How to disable lazy loading for specific query?
Is there any way to disable lazy loading for specific query on Entity Framework 6? I want to use it regularly, but sometimes I want to disable it. I'm using virtual properties to lazy load them.
...
Append class if condition is true in Haml
...
add a comment
|
21
...
How many double numbers are there between 0.0 and 1.0?
This is something that's been on my mind for years, but I never took the time to ask before.
6 Answers
...
Different dependencies for different build profiles
...
To quote the Maven documentation on this:
A profile element contains both an optional activation (a profile trigger) and the set of changes to be made to the POM if that profile has been activated. For example, a project built for a test environme...
How to test if a string is basically an integer in quotes using Ruby
...self =~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to check positive numbers
if !/\A\d+\z/.match(string_to_check)
#Is not a positive number
else
#...