大约有 41,000 项符合查询结果（耗时：0.0636秒） [XML]
Calling parent class __init__ with multiple inheritance, what's the right way?
...
Both ways work fine. The approach using super() leads to greater flexibility for subclasses.
In the direct call approach, C.__init__ can call both A.__init__ and B.__init__.
When using super(), the classes need to be designed for c...
How can I make a time delay in Python? [duplicate]
...
import time
time.sleep(5) # Delays for 5 seconds. You can also use a float value.
Here is another example where something is run approximately once a minute:
import time
while True:
print("This prints once a minute.")
...
C++: Rounding up to the nearest multiple of a number
...
This works for positive numbers, not sure about negative. It only uses integer math.
int roundUp(int numToRound, int multiple)
{
if (multiple == 0)
return numToRound;
int remainder = numToRound % multiple;
if ...
PHP script to loop through all of the files in a directory?
I'm looking for a PHP script that loops through all of the files in a directory so I can do things with the filename, such as format, print or add it to a link. I'd like to be able to sort the files by name, type or by date created/added/modified. (Think fancy directory "index".) I'd also like to be...
How to retrieve absolute path given relative
...
use:
find "$(pwd)"/ -type f
to get all files or
echo "$(pwd)/$line"
to display full path (if relative path matters to)
share
|
improve this answer
|
...
Email address validation using ASP.NET MVC data type attributes
...
If you are using .NET Framework 4.5, the solution is to use EmailAddressAttribute which resides inside System.ComponentModel.DataAnnotations.
Your code should look similar to this:
[Display(Name = "Email address")]
[Required(ErrorMessage = "The email ...
Flexbox not giving equal width to elements
...
There is an important bit that is not mentioned in the article to which you linked and that is flex-basis. By default flex-basis is auto.
From the spec:
If the specified flex-basis is auto, the used flex basis is the value of the fl...
Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat
...
I more often have p7zip installed instead of zip and in this case it's important to specify file format: 7z d -tzip file.jar dir/unwanted_file.txt
– lapo
Jul 31 '13 at 10:02
...
Rails: What's a good way to validate links (URLs)?
...oad request.
What do you want to do, exactly? Do you want to validate the format of the URL, the existence, or what? There are several possibilities, depending on what you want to do.
A regular expression can validate the format of the URL. But even a complex regular expression cannot ensure you are...
What is the difference between Nexus and Maven?
...
Sonatype Nexus and Apache Maven are two pieces of software that often work together but they do very different parts of the job. Nexus provides a repository while Maven uses a repository to build software.
Here's a quote from "What is Nexus?":
Nexus manages software "artifacts" required for...