ObjectsCompat
open class ObjectsCompat
| kotlin.Any | |
| ↳ | androidx.core.util.ObjectsCompat |
This class consists of static utility methods for operating on objects.
Summary
Public methods |
|
|---|---|
| open static Boolean |
Returns |
| open static Int |
Generates a hash code for a sequence of input values. |
| open static Int |
Returns the hash code of a non- |
Public methods
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.
| Parameters | |
|---|---|
a |
Any?: an object |
b |
Any?: an object to be compared with a for equality |
| Return | |
|---|---|
Boolean: true if the arguments are equal to each other and false otherwise |
See Also
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);
}
Warning: When a single object reference is supplied, the returned value does not equal the hash code of that object reference. This value can be computed by calling hashCode(Object).
| Parameters | |
|---|---|
values |
Any!: the values to be hashed |
| Return | |
|---|---|
| Int: a hash value of the sequence of input values |
See Also