Package org.cactoos

Interface Scalar<T>

Type Parameters:

T - Type of result

All Known Implementing Classes:

And, AndInThreads, AndWithIndex, Binary, BoolOf, Checked, Constant, Contains, DateOf, EndsWith, Equality, Equals, EqualsNullable, False, FirstOf, Flattened, Folded, HashCode, HighestOf, InheritanceLevel, IoChecked, IsBlank, IsEmpty, Iso, ItemAt, LengthOf, LocalDateTimeOf, LowestOf, Mapped, NoNulls, Not, OffsetDateTimeOf, Or, PropertiesOf, Reduced, Repeated, Retry, ScalarEnvelope, ScalarOf, ScalarOfSupplier, ScalarWithFallback, Solid, StartsWith, Sticky, Synced, TempFile, TempFolder, Ternary, True, Unchecked, Xor, ZonedDateTimeOf

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Scalar<T>

Scalar.

If you don't want to have any checked exceptions being thrown out of your Scalar, you can use Unchecked decorator. Also you may try IoChecked.

If you want to cache the result of the Scalar and make sure it doesn't calculate anything twice, you can use Sticky decorator.

There is no thread-safety guarantee.

Since:

0.1

See Also:

Sticky, Unchecked, IoChecked

Method Summary

Modifier and Type	Method	Description
T	value()	Convert it to the value.

Method Detail

value

T value()
 throws Exception

Convert it to the value.

Returns:

The value

Throws:

Exception - If fails