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Random Gaussian Variables
...rand = new Random(); //reuse this if you are generating many
double u1 = 1.0-rand.NextDouble(); //uniform(0,1] random doubles
double u2 = 1.0-rand.NextDouble();
double randStdNormal = Math.Sqrt(-2.0 * Math.Log(u1)) *
Math.Sin(2.0 * Math.PI * u2); //random normal(0,1)
double randNormal =...
Removing a list of characters in string
...e) == test
t = timeit.timeit(lambda: f(subj, chars_to_remove), number=1000)
print ('{0:.3f} {1}'.format(t, f.__name__))
print (sys.version)
PYTHON2 = sys.version_info[0] == 2
print ('\n"plain" string:\n')
chars_to_remove = ['.', '!', '?']
subj = 'A.B!C?' * 1000
test = 'ABC' * 1000
profil...
How can I set the request header for curl?
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answered Nov 18 '10 at 7:27
Mads MobækMads Mobæk
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
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answered Feb 15 '12 at 0:25
Dan WichDan Wich
4,74311 gold badge2222 silver badges2222 bronze badges
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What does curly brackets in the `var { … } = …` statements do?
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edited May 19 '16 at 12:07
Red15
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answered Mar 8 '13 at 10:09
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How to sort an array of objects with jquery or javascript [duplicate]
...owerCase();
return ((aName < bName) ? -1 : ((aName > bName) ? 1 : 0));
}
array.sort(SortByName);
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How to sum up elements of a C++ vector?
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Actually there are quite a few methods.
int sum_of_elems = 0;
C++03
Classic for loop:
for(std::vector<int>::iterator it = vector.begin(); it != vector.end(); ++it)
sum_of_elems += *it;
Using a standard algorithm:
#include <numeric>
sum_of_elems = std::accu...
Setting a WebRequest's body data
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109
With HttpWebRequest.GetRequestStream
Code example from http://msdn.microsoft.com/en-us/library...
How to convert a number to string and vice versa in C++
...g to numeric
float stof(const string& str, size_t *idx = 0);
double stod(const string& str, size_t *idx = 0);
long double stold(const string& str, size_t *idx = 0);
int stoi(const string& str, size_t *idx = 0, int base = 10);
long ...
How to run only one task in ansible playbook?
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You may also apply tags to roles:
roles:
- { role: webserver, port: 5000, tags: [ 'web', 'foo' ] }
And you may also tag basic include statements:
- include: foo.yml tags=web,foo
Both of these have the function of tagging every single task inside the include statement.
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