大约有 46,000 项符合查询结果(耗时:0.0439秒) [XML]

https://stackoverflow.com/ques... 

Calendar Recurring/Repeating Events - Best Storage Method

... didn't want to have a large number of rows, and I wanted to easily lookup all events that would take place on a specific date. The method below is great at storing repeating information that occurs at regular intervals, such as every day, every n days, every week, every month every year, etc etc. ...
https://stackoverflow.com/ques... 

Python threading.timer - repeat function every 'n' seconds

... not self.stopped.wait(0.5): print("my thread") # call a function In the code that started the timer, you can then set the stopped event to stop the timer. stopFlag = Event() thread = MyThread(stopFlag) thread.start() # this will stop the timer stopFlag.set() ...
https://stackoverflow.com/ques... 

Can I query MongoDB ObjectId by date?

...Seconds + "0000000000000000"); return constructedObjectId } /* Find all documents created after midnight on May 25th, 1980 */ db.mycollection.find({ _id: { $gt: objectIdWithTimestamp('1980/05/25') } }); share ...
https://stackoverflow.com/ques... 

How to print to stderr in Python?

...to make your code Python3-ready. I guess this could be why many people actually like it! – MarcH Nov 18 '14 at 19:00 18 ...
https://stackoverflow.com/ques... 

How is a CRC32 checksum calculated?

... 1 0000 0100 1100 0001 0001 1101 1011 0111 The highest term (x32) is usually not explicitly written, so it can instead be represented in hex just as 0x 04 C1 1D B7 Feel free to count the 1s and 0s, but you'll find they match up with the polynomial, where 1 is bit 0 (or the first bit) and x ...
https://stackoverflow.com/ques... 

What's a correct and good way to implement __hash__()?

...be integers, and there aren't too many of them, I suppose you could potentially run slightly faster with some home-rolled hash, but it likely wouldn't be as well distributed. hash((self.attr_a, self.attr_b, self.attr_c)) is going to be surprisingly fast (and correct), as creation of small tuples is ...
https://stackoverflow.com/ques... 

How to make an immutable object in Python?

... Can you use namedtuple internally inside the class instead of instantiating the object externally? I'm very new to python but the advantage to your other answer is that I can have a class hide the details and also have the power of things like optional p...
https://stackoverflow.com/ques... 

How to use if - else structure in a batch file?

...stion about if - else structure in a batch file. Each command runs individually, but I couldn't use "if - else" blocks safely so these parts of my programme doesn't work. How can I do make these parts run? Thank you. ...
https://stackoverflow.com/ques... 

Ruby replace string with captured regex pattern

...d answer first without reading the entirety of answers. That seems to generally be the most efficient means of fixing a problem. Give Vicky a break! :) – Josh M. Jan 31 '14 at 3:43 ...
https://stackoverflow.com/ques... 

Download attachments using Java Mail

Now that I`ve downloaded all the messages, and store them to 4 Answers 4 ...