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Retrieving a random item from ArrayList [duplicate]
...won't compile anyway since it is unreachable.
Might want to re-write it like:
import java.util.ArrayList;
import java.util.Random;
public class Catalogue
{
private Random randomGenerator;
private ArrayList<Item> catalogue;
public Catalogue()
{
catalogue = new Array...
How to format strings using printf() to get equal length in the output?
I have two functions, one which produces messages like Starting initialization... and another which checks return codes and outputs "Ok" , "Warning" or "Error" . However, the output that is produced is of the different length:
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C# 3.0 auto-properties — useful or not? [closed]
Note: This was posted when I was starting out C#. With 2014 knowledge, I can truly say that auto-properties are among the best things that ever happened to the C# language.
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How to initialize an array in Java?
I am initializing an array like this:
10 Answers
10
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How do I get the current username in .NET using C#?
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juanjuan
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How can I make Jenkins CI with Git trigger on pushes to master?
I'm trying to set up Jenkins-ci for a project using GitHub. I've already set up Jenkins with the appropriate plugins. I want Jenkins to run build scripts only whenever someone on the project pushes to master. So far I've been able to set it up so that a build will be triggered anytime anyone pushes ...
Mod of negative number is melting my brain
... an array position so that it will loop round. Doing i %
arrayLength works fine for positive numbers but for negative numbers it all goes wrong.
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Listen for key press in .NET console app
How can I continue to run my console application until a key press (like Esc is pressed?)
9 Answers
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What does the question mark operator mean in Ruby?
What is the purpose of the question mark operator in Ruby?
9 Answers
9
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Display number with leading zeros
...ython 2 (and Python 3) you can do:
print "%02d" % (1,)
Basically % is like printf or sprintf (see docs).
For Python 3.+, the same behavior can also be achieved with format:
print("{:02d}".format(1))
For Python 3.6+ the same behavior can be achieved with f-strings:
print(f"{1:02d}")
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