equality Archives - IT Nursery

What’s wrong with using == to compare floats in Java?

According to this java.sun page == is the equality comparison operator for floating point numbers in Java. However, when I type this code: … Read more

In Objective-C, what is the equivalent of Java’s “instanceof” keyword?

by IT Nursery

I would like to check whether an object (e.g. someObject) is assignable (cast-able) to a variable of another type (e.g. SpecifiedType). In Java, … Read more

Python if not == vs if !=

by IT Nursery

What is the difference between these two lines of code: if not x == ‘val’: and if x != ‘val’: Is one more … Read more

Why is x == (x = y) not the same as (x = y) == x?

by IT Nursery

Consider the following example: class Quirky { public static void main(String[] args) { int x = 1; int y = 3; System.out.println(x == … Read more

What’s the difference between IEquatable and just overriding Object.Equals()?

by IT Nursery

I want my Food class to be able to test whenever it is equal to another instance of Food. I will later use … Read more

equals vs Arrays.equals in Java

by IT Nursery

When comparing arrays in Java, are there any differences between the following 2 statements? Object[] array1, array2; array1.equals(array2); Arrays.equals(array1, array2); And if so, … Read more