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How to generate random number with the specific length in python
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If you want it as a string (for example, a 10-digit phone number) you can use this:
n = 10
''.join(["{}".format(randint(0, 9)) for num in range(0, n)])
share
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Left padding a String with Zeros [duplicate]
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If your string contains numbers only, you can make it an integer and then do padding:
String.format("%010d", Integer.parseInt(mystring));
If not I would like to know how it can be done.
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How do I mock an open used in a with statement (using the Mock framework in Python)?
...hods or attributes available on standard file handles.
read_data is a string for the read method of the file handle to
return. This is an empty string by default.
>>> from mock import mock_open, patch
>>> m = mock_open()
>>> with patch('{}.open'.format(__name__), ...
mmap() vs. reading blocks
...into your process. It's as if you memory mapped it yourself except with an extra copy step.
– Chris Smith
Oct 26 '08 at 21:53
6
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字符串指针变量与字符数组的区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 设有定义字符型指针变量与字符数组的语句如下： char *pc ,str[100]; 则系统...使用字符串指针变量与字符数组的区别
（1）分配内存
设有定义字符型指针变量与字符数组的语句如下：
char *pc ,str[100];
则系...
How to get the groups of a user in Active Directory? (c#, asp.net)
...u get its groups very easily:
public List<GroupPrincipal> GetGroups(string userName)
{
List<GroupPrincipal> result = new List<GroupPrincipal>();
// establish domain context
PrincipalContext yourDomain = new PrincipalContext(ContextType.Domain);
// find your user
U...
Vim delete blank lines
... This will delete all the empty lines(do not contain any white space characters..), but that may not be the unique requirement. Someone may still keep one of the empty line. :%!cat -s may be the choice..
– coanor
Nov 21 '12 at 5:04
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How to pass objects to functions in C++?
... C tmp = a;
a = b;
b = tmp;
}
public static void main( String args[] ) {
C a = new C();
C b = new C();
C old_a = a;
C old_b = b;
swap( a, b );
// a and b remain unchanged a==old_a, and b==old_b
}
}
The Java version of the code will modify...
getMinutes() 0-9 - How to display two digit numbers?
... "If getMinutes() is less than 10, return a 0, if greater, return an empty string.
– Michael Giovanni Pumo
Aug 17 '16 at 10:30
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Difference between VARCHAR and TEXT in MySQL [duplicate]
...size)
takes 2 + c bytes of disk space, where c is the length of the stored string.
cannot be (fully) part of an index. One would need to specify a prefix length.
VARCHAR(M)
variable max size of M characters
M needs to be between 1 and 65535
takes 1 + c bytes (for M ≤ 255) or 2 + c (for 256 ≤...