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程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...pt(bytesToBeEncrypted, passwordBytes);
string result = Convert.ToBase64String(bytesEncrypted);
return result;
}
public static string DecryptText(string input, string password)
{
// Get the bytes of the string
byte[] bytesToBeDecrypted = Convert.FromBase64String(input);...
ImportError: No module named MySQLdb
...qldb has some dependencies like VC++ library and sometimes doesn't work on 64 bit OS
– Nima Soroush
Oct 27 '15 at 16:52
1
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How to check if variable is string with python 2 and 3 compatibility
... in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
10 Answers
...
Unmangling the result of std::type_info::name
...
}
#endif
Usage:
#include <iostream>
#include "type.hpp"
struct Base { virtual ~Base() {} };
struct Derived : public Base { };
int main() {
Base* ptr_base = new Derived(); // Please use smart pointers in YOUR code!
std::cout << "Type of ptr_base: " << type(ptr_base...
Can CSS detect the number of children an element has?
... misleading. Note that, in CSS3, styles cannot be applied to a parent node based on the number of children it has. However, styles can be applied to the children nodes based on the number of siblings they have.
Original answer:
Incredibly, this is now possible purely in CSS3.
/* one item */
li:...
How to get a value from a cell of a dataframe?
...]: sub_df.iloc[0]
Out[4]:
A -0.133653
B -0.030854
Name: 2, dtype: float64
In [5]: sub_df.iloc[0]['A']
Out[5]: -0.13365288513107493
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Minimum and maximum value of z-index?
I have a div in my HTML page. I am showing this div based on some condition, but the div is displaying behind the HTML element where I pointed the mouse cursor.
...
Interface vs Base class
When should I use an interface and when should I use a base class?
38 Answers
38
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Why '&&' and not '&'?
...not computed using bitwise calculations. The result is basically looked up based on the values of the two operands, because the number of possibilities is so small.
Because both values are used for the lookup, this implementation isn't short-circuiting.
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How do I get the application exit code from a Windows command line?
... and want to see what its return code is (since it returns different codes based on different errors).
7 Answers
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