大约有 30,000 项符合查询结果(耗时:0.0229秒) [XML]

https://stackoverflow.com/ques... 

What are the dangers when creating a thread with a stack size of 50x the default?

...t on heap. It goes like this: stack < global < heap. (allocation time) Technically, stack allocation isn't really an allocation, the runtime just makes sure a part of the stack (frame?) is reserved for the array. I strongly advise being careful with this, though. I recommend the following...
https://stackoverflow.com/ques... 

How do I check if there are duplicates in a flat list?

...unt(x) > 1 for x in thelist) Do not use on a long list -- it can take time proportional to the square of the number of items in the list! For longer lists with hashable items (strings, numbers, &c): def anydup(thelist): seen = set() for x in thelist: if x in seen: return True ...
https://stackoverflow.com/ques... 

Why is quicksort better than mergesort?

... Quicksort has O(n2) worst-case runtime and O(nlogn) average case runtime. However, it’s superior to merge sort in many scenarios because many factors influence an algorithm’s runtime, and, when taking them all together, quicksort wins out. In particular,...
https://stackoverflow.com/ques... 

How do I translate an ISO 8601 datetime string into a Python datetime object? [duplicate]

I'm getting a datetime string in a format like "2009-05-28T16:15:00" (this is ISO 8601, I believe). One hackish option seems to be to parse the string using time.strptime and passing the first six elements of the tuple into the datetime constructor, like: ...
https://stackoverflow.com/ques... 

How do I get elapsed time in milliseconds in Ruby?

If I have a Time object got from : 10 Answers 10 ...
https://stackoverflow.com/ques... 

How to find all positions of the maximum value in a list?

...is 2n, the list is iterated through 2x, once to determine max, and another time to find the positions of the max. A for loop that tracks the current max and its position might be more efficient for really long lists. – radtek Jan 8 '15 at 18:42 ...
https://stackoverflow.com/ques... 

Replace all whitespace characters

...equal to [\r\n\t\f\v ]) + Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy) Global pattern flags g modifier: global. All matches (don't return after first match) ...
https://stackoverflow.com/ques... 

Pure JavaScript Send POST Data Without a Form

... the returned data } // end of state change: it can be after some time (async) }; xhr.open('GET', yourUrl, true); xhr.send(); share | improve this answer | follow ...
https://stackoverflow.com/ques... 

Max size of an iOS application

...he total of all __TEXT sections in the binary. However, consider download times when determining your app’s size. Minimize the file’s size as much as possible, keeping in mind that there is a 100 MB limit for over-the-air downloads. This information can be found at iTunes Connect Developer Gui...
https://stackoverflow.com/ques... 

How do I get java logging output to appear on a single line?

...Date dat = new Date(); private final static String format = "{0,date} {0,time}"; private MessageFormat formatter; private Object args[] = new Object[1]; // Line separator string. This is the value of the line.separator // property at the moment that the SimpleFormatter was created. //p...