大约有 47,000 项符合查询结果(耗时:0.0645秒) [XML]

https://stackoverflow.com/ques... 

What does a b prefix before a python string mean?

... | edited Apr 7 '10 at 14:05 answered Apr 7 '10 at 13:34 ...
https://stackoverflow.com/ques... 

Why is printing to stdout so slow? Can it be sped up?

... I ran your file writing test on my machine, and with buffering, it also 0.05s here for 100,000 lines. However, with the above modifications to write unbuffered, it takes 40 seconds to write only 1,000 lines to disk. I gave up waiting for 100,000 lines to write, but extrapolating from the previou...
https://stackoverflow.com/ques... 

How to append multiple values to a list in Python

... 3, 4] >>> lst.extend([5, 6, 7]) >>> lst.extend((8, 9, 10)) >>> lst [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] >>> lst.extend(range(11, 14)) >>> lst [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13] So you can use list.append() to append a single value, and list.exten...
https://stackoverflow.com/ques... 

What is the difference between Lisp-1 and Lisp-2?

... pauldoopauldoo 15.7k2020 gold badges8484 silver badges111111 bronze badges ...
https://stackoverflow.com/ques... 

Print function log /stack trace for entire program using firebug

...lpful. – Ravi Teja Apr 4 '17 at 11:301 console.warn('[WARN] CALL STACK:', new Error().stack); ...
https://stackoverflow.com/ques... 

Convert date to datetime in Python

... 10 Answers 10 Active ...
https://stackoverflow.com/ques... 

How to reset radiobuttons in jQuery so that none is checked

... 270 In versions of jQuery before 1.6 use: $('input[name="correctAnswer"]').attr('checked', false); ...
https://stackoverflow.com/ques... 

How to flatten only some dimensions of a numpy array

... Take a look at numpy.reshape . >>> arr = numpy.zeros((50,100,25)) >>> arr.shape # (50, 100, 25) >>> new_arr = arr.reshape(5000,25) >>> new_arr.shape # (5000, 25) # One shape dimension can be -1. # In this case, the value is inferred from # the le...
https://stackoverflow.com/ques... 

Switch to another Git tag

... answered Dec 2 '10 at 0:40 Fake Code Monkey RashidFake Code Monkey Rashid 11.3k55 gold badges2929 silver badges3737 bronze badges ...
https://stackoverflow.com/ques... 

How can I make my flexbox layout take 100% vertical space?

... You should set height of html, body, .wrapper to 100% (in order to inherit full height) and then just set a flex value greater than 1 to .row3 and not on the others. .wrapper, html, body { height: 100%; margin: 0; } .wrapper { display: flex; flex-directio...