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Programmatically obtain the Android API level of a device?
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107
You can obtain API level programatically by the system constant (Build.VERSION.SDK_INT). For e...
Definition of a Balanced Tree
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124
The constraint is generally applied recursively to every subtree. That is, the tree is only ba...
What does the “|” (single pipe) do in JavaScript?
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159
This is a bitwise or.
Since bitwise operations only make sense on integers, 0.5 is truncated.
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Python: print a generator expression?
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163
Quick answer:
Doing list() around a generator expression is (almost) exactly equivalent to ha...
What is the fastest integer division supporting division by zero no matter what the result is?
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107
Inspired by some of the comments I got rid of the branch on my Pentium and gcc compiler using
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C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...题首先看如下代码：int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
printf("%d,%d\n", *(a+1), *(ptr-1));
return 0...
how to ignore namespaces with XPath
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168
You can use the local-name() XPath function. Instead of selecting a node like
/path/to/x:some...
Merge Images Side by Side(Horizontally)
I have five images of sizes: 600x30, 600x30, 600x30, 600x30, 810x30. Their names are: 0.png, 1.png, 2.png, 3.png, 4.png, respectively.
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Passing arguments forward to another javascript function
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551
Use .apply() to have the same access to arguments in function b, like this:
function a(){
b...
ab load testing
...he average response time that you find valid is 2 seconds, that means that 10 seconds out of a minute 1 user will be on requests, meaning only 1/6 of the time it will be hitting the site. This also means that if you have 6 users hitting the site with ab simultaneously, you are likely to have 36 user...