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Getting random numbers in Java [duplicate]
...and.nextInt(50);
// Add 1 to the result to get a number from the required range
// (i.e., [1 - 50]).
n += 1;
Another solution is using Math.random():
double random = Math.random() * 49 + 1;
or
int random = (int)(Math.random() * 50 + 1);
...
How to sum up an array of integers in C#
...essorCount };
Parallel.ForEach(Partitioner.Create(0, arr.Length), options, range =>
{
long localSum = 0;
for (int i = range.Item1; i < range.Item2; i++)
{
localSum += arr[i];
}
Interlocked.Add(ref sum, localSum);
});
...
How to throw std::exceptions with variable messages?
...
There are different exceptions such as runtime_error, range_error, overflow_error, logic_error, etc.. You need to pass the string into its constructor, and you can concatenate whatever you want to your message. That's just a string operation.
std::string errorMessage = std::st...
Hidden features of Python [closed]
... literal 45
literal 43
max_repeat 1 2
in
range (48, 57)
literal 93
subpattern 2
min_repeat 0 65535
any None
in
literal 47
literal 102
literal 111
literal 110
literal 116
Once you understand the syntax, you can spot your errors. There we can see th...
How to increment a datetime by one day?
...
date = datetime.datetime(2003,8,1,12,4,5)
for i in range(5):
date += datetime.timedelta(days=1)
print(date)
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Strip HTML from strings in Python
...xception.
Numeric HTML entities specifying code points outside the Unicode range acceptable by Python (such as, on some systems, characters outside the Basic Multilingual Plane) will cause a ValueError exception.
Security note: Do not confuse HTML stripping (converting HTML into plain text) with H...
How to convert string to boolean php
...
filter_var($string, FILTER_VALIDATE_BOOLEAN);
filter_var covers a whole range of values, including the truthy values "true", "1", "yes" and "on". See here for more details.
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Pure JavaScript Send POST Data Without a Form
...ose = lambda self: None
httpd.serve_forever()
[Thread(i) for i in range(10)]
time.sleep(9e9)
Console log (chrome):
HELLO
hello.html:14 {"req": {"value": "value"}}
hello.html:16
{req: {…}}
req
:
{value: "value"}
__proto__
:
Object
Console log (firefox):
GET
http://XXXXX:8000/hello....
Select rows of a matrix that meet a condition
... @neilfws What will be the solution if I want to define some values for a range of columns. for example df <- df[!which(df$ARID3A:df$YY1 == "U"),], here I want to remove those rows from my df where a range of columns (ARID3A: YY1) contains the value U.
– Newbie
...
Tips for debugging .htaccess rewrite rules
... to make sure that is a valid syntax and does what you intend with a fully range of test URIs.
See regexpCheck.php below for a simple script that you can add to a private/test directory in your site to help you do this. I've kept this brief rather than pretty. Just past this into a file regexpChec...