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Math.random() versus Random.nextInt(int)
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What are the underlying data structures used for Redis?
... you'll find the time complexity in the documentation and, if you have the set of operations and the time complexity, the only other thing you need is some clue about memory usage (and because we do many optimizations that may vary depending on data, the best way to get these latter figures are doin...
Good example of livelock?
...public Diner getOwner() { return owner; }
public synchronized void setOwner(Diner d) { owner = d; }
public synchronized void use() {
System.out.printf("%s has eaten!", owner.name);
}
}
static class Diner {
private String name;
private bo...
How to search for file names in Visual Studio?
In Eclipse you can search for a file in the project by pressing CTRL - SHIFT - R .
20 Answers
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python plot normal distribution
...
I believe that is important to set the height, so created this function:
def my_gauss(x, sigma=1, h=1, mid=0):
from math import exp, pow
variance = pow(sdev, 2)
return h * exp(-pow(x-mid, 2)/(2*variance))
Where sigma is the standard deviatio...
Difference between a virtual function and a pure virtual function [duplicate]
What is the difference between a pure virtual function and a virtual function?
4 Answers
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Using the scrollwheel in GNU screen
How can I setup GNU screen to allow the mouse's scrollwheel to scroll around in the scrollback buffer? I tried to Google about this, but most hits were on how to allow applications inside screen to use the scrollwheel.
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Javascript: formatting a rounded number to N decimals
... s.indexOf('.') + 4) s += '0';
(Note that this assumes that the regional settings of the client uses period as decimal separator, the code needs some more work to function for other settings.)
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How are feature_importances in RandomForestClassifier determined?
...erion that you use (e.g. Gini, Entropy, MSE, ...). Its the impurity of the set of examples that gets routed to the internal node minus the sum of the impurities of the two partitions created by the split.
Its important that these values are relative to a specific dataset (both error reduction and t...
How can I suppress column header output for a single SQL statement?
... 1 | pete |
| 2 | john |
| 3 | mike |
+------+-------+
3 rows in set (0.00 sec)
Credit to ErichBSchulz for pointing out the -N alias.
To remove the grid (the vertical and horizontal lines) around the results use -s (--silent). Columns are separated with a TAB character.
mysql -s ...
us...