ObjectsCompat

equals

open static fun equals(@Nullable a: Any?, @Nullable b: Any?): Boolean

Returns true if the arguments are equal to each other and false otherwise.

Consequently, if both arguments are null, true is returned and if exactly one argument is null, false is returned. Otherwise, equality is determined by using the equals method of the first argument.

hashCode

open static fun hashCode(@Nullable o: Any?): Int

Returns the hash code of a non-null argument and 0 for a null argument.

hash

open static fun hash(@Nullable vararg values: Any!): Int

Generates a hash code for a sequence of input values. The hash code is generated as if all the input values were placed into an array, and that array were hashed by calling Arrays#hashCode(Object[]).

This method is useful for implementing Object#hashCode() on objects containing multiple fields. For example, if an object that has three fields, x, y, and z, one could write:

 @Override public int hashCode() { return ObjectsCompat.hash(x, y, z); }