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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
动态追踪(Dynamic Tracing)技术漫谈dynamic-tracing什么是动态追踪动态追踪的优点DTrace 与 SystemTapSystemTap 在生产上的应用火焰图方法论知识就是力量开源与调试符号Linux 内核的支持硬件追踪死亡进程的遗骸分析传统的调试技
什么...
Convert string with comma to integer
Is there any neat method to convert "1,112" to integer 1112, instead of 1?
7 Answers
7...
How do I create and read a value from cookie?
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Here are functions you can use for creating and retrieving cookies.
function createCookie(name, value, days) {
var expires;
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));...
LINQ Select Distinct with Anonymous Types
So I have a collection of objects. The exact type isn't important. From it I want to extract all the unique pairs of a pair of particular properties, thusly:
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How to sort in-place using the merge sort algorithm?
...his as an exercise (Vol 3, 5.2.5). There do exist in-place merge sorts. They must be implemented carefully.
First, naive in-place merge such as described here isn't the right solution. It downgrades the performance to O(N2).
The idea is to sort part of the array while using the rest as working are...
Convert Unix timestamp into human readable date using MySQL
Is there a MySQL function which can be used to convert a Unix timestamp into a human readable date? I have one field where I save Unix times and now I want to add another field for human readable dates.
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Check if all elements in a list are identical
...al method:
def checkEqual1(iterator):
iterator = iter(iterator)
try:
first = next(iterator)
except StopIteration:
return True
return all(first == rest for rest in iterator)
One-liner:
def checkEqual2(iterator):
return len(set(iterator)) <= 1
Also one-liner...
Is there a way to detect if an image is blurry?
I was wondering if there is a way to determine if an image is blurry or not by analyzing the image data.
12 Answers
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Can't find a “not equal” css attribute selector
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:not([foo=''])
{
background: red;
}
http://jsfiddle.net/gsLvuys0/
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Size of Matrix OpenCV
I know this might be very rudimentary, but I am new to OpenCV. Could you please tell me how to obtain the size of a matrix in OpenCV?. I googled and I am still searching, but if any of you know the answer, please help me.
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