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Is “double hashing” a password less secure than just hashing it once?
...s the time it takes for an attacker to try each password in their list of candidates. You can easily increase the time it takes to attack a password from hours to years.
Simple iteration is not enough
Merely chaining hash output to input isn't sufficient for security. The iteration should take pla...
Static method behavior in multi-threaded environment in java
There's a simple stupid question that bother me and make several arguments in my mind.
I want to throw out all the doubts about below questions.
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How do I change the UUID of a virtual disk?
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The correct command is the following one.
VBoxManage internalcommands sethduuid "/home/user/VirtualBox VMs/drupal/drupal.vhd"
The path for the virtual disk contains a space, so it must be enclosed in double quotes to avoid it is parsed as...
Long press on UITableView
I would like to handle a long press on a UITableViewCell to print a "quick access menu".
Did someone already do this?
10...
C++虚析构函数解析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...析构基类而不析构派生类的状况发生。以下内容转自：http...为什么基类的析构函数是虚函数？
在实现多态时，当用基类操作派生类，在析构时防止只析构基类而不析构派生类的状况发生。
以下内容转自： http://blog.sina.com.cn/s/b...
How to remove indentation from an unordered list item?
...
Set the list style and left padding to nothing.
ul {
list-style: none;
padding-left: 0;
}
ul {
list-style: none;
padding-left: 0;
}
<ul>
<li>a</li>
<li>b</li>
<li>c</li&g...
GitHub: searching through older versions of files
...but deleted it several versions ago, is it possible to search for get_info and find the code. If it is not possible using GitHub, is it possible from the git command line?
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angularjs newline filter with no other html
...le="white-space: pre;">{{ MyMultiLineText}}</p>
This will parse and display \n as new lines. Works great for me.
Here, a jsFiddle example.
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Move entire line up and down in Vim
...++, I can use Ctrl + Shift + Up / Down to move the current line up and down. Is there a similar command to this in Vim? I have looked through endless guides, but have found nothing.
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How does Apple find dates, times and addresses in emails?
...n an email contains a date, time or location, the text becomes a hyperlink and it is possible to create an appointment or look at a map simply by tapping the link. It not only works for emails in English, but in other languages also. I love this feature and would like to understand how they do it.
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