You might know that Java passes by value, but it helps to understand why. Here's what happens when you pass mutable and immutable object references in Java.

Expert astrologers explain what it means to be a mutable sign, their personality traits, compatibility with other signs, and how this impacts your life overall.

Python is one of the best languages for novice programmers — but that doesn’t mean that it doesn’t get confusing.

For example, when cloning an object with String fields, it is not necessary to clone them since String s are immutable. All these immutability flavors are invaluable for good defensive programming.