大约有 42,000 项符合查询结果（耗时：0.0720秒） [XML]
Which UUID version to use?
...que ID based on a network card MAC address and a timer. These IDs are easy to predict (given one, I might be able to guess another one) and can be traced back to your network card. It's not recommended to create these.
Version 4: These are generated from random (or pseudo-random) numbers. If you jus...
Proper use of beginBackgroundTaskWithExpirationHandler
I'm a bit confused about how and when to use beginBackgroundTaskWithExpirationHandler .
5 Answers
...
How to search and replace text in a file?
...
fileinput already supports inplace editing. It redirects stdout to the file in this case:
#!/usr/bin/env python3
import fileinput
with fileinput.FileInput(filename, inplace=True, backup='.bak') as file:
for line in file:
print(line.replace(text_to_search, replacement_text), ...
Django rest framework, use different serializers in the same ModelViewSet
I would like to provide two different serializers and yet be able to benefit from all the facilities of ModelViewSet :
6 A...
What does “Memory allocated at compile time” really mean?
In programming languages like C and C++, people often refer to static and dynamic memory allocation. I understand the concept but the phrase "All memory was allocated (reserved) during compile time" always confuses me.
...
How to use a servlet filter in Java to change an incoming servlet request url?
How can I use a servlet filter to change an incoming servlet request url from
3 Answers
...
How to make asynchronous HTTP requests in PHP
Is there a way in PHP to make asynchronous HTTP calls? I don't care about the response, I just want to do something like file_get_contents() , but not wait for the request to finish before executing the rest of my code. This would be super useful for setting off "events" of a sort in my application...
Vim multiline editing like in sublimetext?
I started to use gvim, and I can't quite understand how the multiline edit works in gvim.
7 Answers
...
Dismissing a Presented View Controller
...is on the presented view controller, all it does is forward the message on to the presenting view controller. If you want to do anything over and above just dismissing the VC, you will need to know this, and you need to treat it much the same way as a delegate method - as that's pretty much what it ...
how to convert java string to Date object [duplicate]
...
You basically effectively converted your date in a string format to a date object. If you print it out at that point, you will get the standard date formatting output. In order to format it after that, you then need to convert it back to a date object with a specified format (already speci...