大约有 5,420 项符合查询结果(耗时:0.0357秒) [XML]

https://stackoverflow.com/ques... 

Are tuples more efficient than lists in Python?

... -m timeit -s "x=[1,2,3,4,5,6,7,8]" "y=x[3]" 10000000 loops, best of 3: 0.0649 usec per loop So in this case, instantiation is almost an order of magnitude faster for the tuple, but item access is actually somewhat faster for the list! So if you're creating a few tuples and accessing them many man...
https://stackoverflow.com/ques... 

Android preferences onclick event

...z am getting ActivityNotFoundException :( – theapache64 Feb 8 '16 at 17:01 add a comment ...
https://stackoverflow.com/ques... 

Django: Why do some model fields clash with each other?

... Hank GayHank Gay 64.2k2929 gold badges144144 silver badges216216 bronze badges ...
https://stackoverflow.com/ques... 

Process all arguments except the first one (in a bash script)

... #"bash" bash --version; #"GNU bash, version 5.0.3(1)-release (x86_64-pc-linux-gnu)" In function: echo $@; #"p1" "p2" "p3" "p4" "p5" echo ${@: 0}; #"bash" "p1" "p2" "p3" "p4" "p5" echo ${@: 1}; #"p1" "p2" "p3" "p4" "p5" echo ${@: 2}; #"p2" "p3" "p4" "p5" e...
https://stackoverflow.com/ques... 

How to Test a Concern in Rails

... 64 In response to the comments I've received, here's what I've ended up doing (if anyone has impro...
https://stackoverflow.com/ques... 

How can I get the sha1 hash of a string in node.js?

...crypto modules for Node. It has modules for dealing with both sha1 and base64. share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Proper stack and heap usage in C++?

... that you can create lots of threads without exhausting address space. For 64-bit programs, or single threaded (Linux anyway) programs, this is not a major issue. Under 32-bit Linux, single threaded programs usually use dynamic stacks which can keep growing until they reach the top of the heap. You ...
https://stackoverflow.com/ques... 

Using ping in c#

...eceive the corresponding ICMP echo reply message. RoundtripTime (System.Int64): Gets the options used to transmit the reply to an Internet Control Message Protocol (ICMP) echo request. PingOptions (System.Byte[]): Gets the buffer of data received in an Internet Control Message Protocol (ICMP) echo r...
https://stackoverflow.com/ques... 

Get event listeners attached to node using addEventListener

... Tim Down 281k6464 gold badges415415 silver badges497497 bronze badges answered Apr 5 '12 at 14:42 RaynosRaynos ...
https://stackoverflow.com/ques... 

Static linking vs dynamic linking

...n i386 CPU's, because they can't generate position independent code. On amd64, jumps can be relative to the program counter, so this is a huge improvement. 2) This is correct. With optimizations guided by profiling you can usually win about 10-15 percent performance. Now that CPU speed has reached ...