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Does the Java &= operator apply & or &&?
...side, the trade-off is between the cost of evaluating b, and the cost of a test and branch of the value of a, and the potential saving of avoiding an unnecessary assignment to a. The analysis is not straight-forward, but unless the cost of calculating b is non-trivial, the performance difference b...
How do I copy items from list to list without foreach?
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For a list of elements
List<string> lstTest = new List<string>();
lstTest.Add("test1");
lstTest.Add("test2");
lstTest.Add("test3");
lstTest.Add("test4");
lstTest.Add("test5");
lstTest.Add("test6");
If you want to copy all the elements
List<string> ...
jQuery Event Keypress: Which key was pressed?
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@Tim: Alas, I just tested this with Firefox using api.jquery.com/keypress : when I press <Tab>, e.which isn't set (remains 0), but e.keyCode is (9). See stackoverflow.com/questions/4793233/… why this matters.
– Mar...
How to delete a whole folder and content?
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I've done no tests for efficiency, but I believe mine is more robust. chirag's will work for the specific case of the DCIM folder, where folders within DCIM should contain only files (i.e. folders within DCIM don't normally contain any su...
How to source virtualenv activate in a Bash script
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no matter what I try, this source "/home/surest/Desktop/testservers/TEST_VENV/venv3/bin/activate" produces: /home/surest/Desktop/testservers/TEST_VENV/py3.sh: 10: /home/surest/Desktop/testservers/TEST_VENV/py3.sh: source: not found
– user4805123
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What is the best way to tell if a character is a letter or number in Java without using regexes?
...f a character is an ASCII letter or digit, then the best thing to do is to test by comparing with the character ranges 'a' to 'z', 'A' to 'Z' and '0' to '9'.
Note that all ASCII letters / digits are Unicode letters / digits ... but there are many Unicode letters / digits characters that are not AS...
Go build: “Cannot find package” (even though GOPATH is set)
...TH/bin:$PATH"
Move main.go to a subfolder of $GOPATH/src, e.g. $GOPATH/src/test
go install test should now create an executable in $GOPATH/bin that can be called by typing test into your terminal.
share
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How fast is D compared to C++?
...But still runs more than 3 times as long. @Matthieu M. I would not mind to test a program with boundschecking in slow motion and once it is debugged let it do its computations without boundschecking. (I do the same with C++ now.)
– Lars
Feb 28 '11 at 21:59
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BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...化，因此造成了上述情况。
【例二】
编译如下程序（test.cpp）：
#include <stdio.h>
#define LEN 1002000
int inbss[LEN];
float fA;
int indata[LEN]={1,2,3,4,5,6,7,8,9};
double dbB = 100.0;
const int cst = 100;
int main(void)
{
int run[100] = {1,2,3,4,5,6,7,8,9};
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How do I simulate a low bandwidth, high latency environment?
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Charles is an HTTP proxy, and therefore only suitable for testing HTTP applications. To each their own, but in my opinion it's probably some of the worst software I've ever used. I only used it for a short time while I had to work on a Mac. For Windows users, I'd recommend Fiddle...