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Should I return a Collection or a Stream?
Suppose I have a method that returns a read-only view into a member list:
9 Answers
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Check if a JavaScript string is a URL
Is there a way in JavaScript to check if a string is a URL?
32 Answers
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Mutable vs immutable objects
I'm trying to get my head around mutable vs immutable objects. Using mutable objects gets a lot of bad press (e.g. returning an array of strings from a method) but I'm having trouble understanding what the negative impacts are of this. What are the best practices around using mutable objects? Should...
How to return multiple objects from a Java method?
I want to return two objects from a Java method and was wondering what could be a good way of doing so?
25 Answers
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Invalidating JSON Web Tokens
For a new node.js project I'm working on, I'm thinking about switching over from a cookie based session approach (by this, I mean, storing an id to a key-value store containing user sessions in a user's browser) to a token-based session approach (no key-value store) using JSON Web Tokens (jwt).
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What does href expression do?
I have seen the following href used in webpages from time to time. However, I don't understand what this is trying to do or the technique. Can someone elaborate please?
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What is the difference between “git init” and “git init --bare”?
What is the different between git init and git init --bare ? I found that a lot of blog post requires --bare for their Git server?
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Reverse a string in Python
There is no built in reverse function for Python's str object. What is the best way of implementing this method?
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How does a hash table work?
I'm looking for an explanation of how a hash table works - in plain English for a simpleton like me!
15 Answers
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How can I select multiple columns from a subquery (in SQL Server) that should have one record (selec
I Know I can select a column from a subquery using this syntax:
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