ExprReduce (eo-runtime 0.27.0 API)

java.lang.Object
- org.eolang.ExprReduce<T>

Type Parameters:

T - Type of arguments

All Implemented Interfaces:

Expr
```
public final class ExprReduce<T>
extends Object
implements Expr
```
Builds a phi performing reduction operation on varargs parameter.
The expression iterates over varargs (including rho) one by one performing provided reduction operation. Type checking is done for each vararg.
Definition example:
```
     final VarargExpr<Long> expr = new VarargExpr<>(
         "plus",
         "x",
         Long.class,
         Long::sum,
     );
 
```
Since:

1.0

Constructor Summary

Constructors
Constructor	Description
`ExprReduce(String oper, String param, Class<T> type, BiFunction<T,T,T> reduction)`	Ctor.
`ExprReduce(String oper, String param, Class<T> type, BiFunction<T,T,T> reduction, Function<T,String> validation)`	Ctor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

Phi get(Phi rho)
Get the object.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ExprReduce
```
public ExprReduce(String oper,
                  String param,
                  Class<T> type,
                  BiFunction<T,T,T> reduction,
                  Function<T,String> validation)
```
    Ctor.
    
    Parameters:
    
    oper - Operation name
    
    param - Name of parameter with varargs
    
    type - Type of varargs
    
    reduction - Reduction operation on consecutive varags
    
    validation - Validation function
  - ExprReduce
```
public ExprReduce(String oper,
                  String param,
                  Class<T> type,
                  BiFunction<T,T,T> reduction)
```
    Ctor.
    
    Parameters:
    
    oper - Peration name
    
    param - Name of parameter with varargs
    
    type - Type of varargs
    
    reduction - Reduction operation on consecutive varargs
- Method Detail
  - get
```
public Phi get(Phi rho)
```
    Description copied from interface: Expr
    
    Get the object.
    
    Specified by:
    
    get in interface Expr
    
    Parameters:
    
    rho - The \rho of this expression (the parent of it)
    
    Returns:
    
    The Phi calculated