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How do I generate random numbers in Dart?
...
Use Random class from dart:math:
import 'dart:math';
main() {
var rng = new Random();
for (var i = 0; i < 10; i++) {
print(rng.nextInt(100));
}
}
This code was tested with the Dart VM and dart2js, as of the time of this writi...
What is dynamic programming? [closed]
...imal sub-structure (e.g., every subset of any path along the shortest path from A to B is itself the shortest path between the 2 endpoints assuming a distance metric that observes the triangle inequality).
– Shea
Jun 30 '09 at 19:56
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How do I get the logfile from an Android device?
I would like to pull the log file from a device to my PC. How can I do that?
13 Answers
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Save classifier to disk in scikit-learn
...blib is included in scikit-learn:
>>> import joblib
>>> from sklearn.datasets import load_digits
>>> from sklearn.linear_model import SGDClassifier
>>> digits = load_digits()
>>> clf = SGDClassifier().fit(digits.data, digits.target)
>>> clf.sco...
Replace part of a string with another string
...ffect you want:
bool replace(std::string& str, const std::string& from, const std::string& to) {
size_t start_pos = str.find(from);
if(start_pos == std::string::npos)
return false;
str.replace(start_pos, from.length(), to);
return true;
}
std::string string("hel...
Copy folder recursively, excluding some folders
... you have lots of directories (or files) to exclude, you can use --exclude-from=FILE, where FILE is the name of a file containing files or directories to exclude.
--exclude may also contain wildcards, such as --exclude=*/.svn*
...
DateTime vs DateTimeOffset
....g. using DateTime.UtcNow ), and whenever we display one, we convert back from UTC to the user's local time.
10 Answers
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How can I strip first X characters from string using sed?
...ble containing the text pid: 1234 and I want to strip first X characters from the line, so only 1234 stays. I have more variables I need to "clean", so I need to cut away X first characters and ${string:5} doesn't work for some reason in my system.
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How to call a Python function from Node.js
...ing algorithm to use in Python. Is there a way I can call Python functions from my Node.js application to make use of the power of machine learning libraries?
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Get only part of an Array in Java?
...thon you can do something like this array[index:] and it returns the array from the index. Is something like this possible in Java.
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