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Create a GUID in Java
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355
Have a look at the UUID class bundled with Java 5 and later.
For example:
If you want a ra...
The tilde operator in Python
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edited Apr 23 '12 at 22:55
answered Nov 29 '11 at 3:02
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Convert base64 string to ArrayBuffer
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edited Oct 30 '19 at 11:00
Massimiliano Kraus
3,06344 gold badges1919 silver badges3636 bronze badges
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MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query
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3 Answers
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Mocking objects with Moq when constructor has parameters
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34
The last line is giving you a real instance because you are using the new keyword, not mocking ...
What is the relationship between the docker host OS and the container base image OS?
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3 Answers
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Else clause on Python while statement
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396
The else clause is only executed when your while condition becomes false. If you break out of...
How do you find the sum of all the numbers in an array in Java?
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In java-8 you can use streams:
int[] a = {10,20,30,40,50};
int sum = IntStream.of(a).sum();
System.out.println("The sum is " + sum);
Output:
The sum is 150.
It's in the package java.util.stream
import java.util.stream.*;
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How to convert a table to a data frame
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324
I figured it out already:
as.data.frame.matrix(mytable)
does what I need -- apparently, th...