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Library providing immutable/persistent collection classes for
Java. While collections are immutable they provide methods for
adding and removing values by creating new modified copies of
themselves. Each copy shares almost all of its structure with
other copies to minimize memory consumption.
///###////////////////////////////////////////////////////////////////////////
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// Burton Computer Corporation
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// Copyright (c) 2019, Burton Computer Corporation
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package org.javimmutable.collections.util;
import org.javimmutable.collections.Func1;
import org.javimmutable.collections.Func2;
import org.javimmutable.collections.Func3;
import org.javimmutable.collections.Func4;
/**
* Contains static factory methods to produce Curried versions of functions.
*/
public final class Curry
{
private Curry()
{
}
/**
* Produces a Curried Func1 that calls the provided Func4 passing it the fixed parameters
* param1-param3 along with the actual parameter to the apply() method as the fourth parameter.
*/
public static Func1 of(final Func4 function,
final P1 param1,
final P2 param2,
final P3 param3)
{
return value -> function.apply(param1, param2, param3, value);
}
/**
* Produces a Curried Func1 that calls the provided Func3 passing it the fixed parameters
* param1-param2 along with the actual parameter to the apply() method as the third parameter.
*/
public static Func1 of(final Func3 function,
final P1 param1,
final P2 param2)
{
return value -> function.apply(param1, param2, value);
}
/**
* Produces a Curried Func1 that calls the provided Func2 passing it the fixed parameter
* param1 along with the actual parameter to the apply() method as the second parameter.
*/
public static Func1 of(final Func2 function,
final P1 param1)
{
return value -> function.apply(param1, value);
}
/**
* Produces a Curried Func3 that calls the provided Func4 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*/
public static Func3 func3(final P1 param1,
final Func4 function)
{
return (param2, param3, param4) -> function.apply(param1, param2, param3, param4);
}
/**
* Produces a Curried Func2 that calls the provided Func3 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*/
public static Func2 func2(final P1 param1,
final Func3 function)
{
return (param2, param3) -> function.apply(param1, param2, param3);
}
/**
* Produces a Curried Func3 that calls the provided Func4 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*/
public static Func2 func2(final P1 param1,
final P2 param2,
final Func4 function)
{
return (param3, param4) -> function.apply(param1, param2, param3, param4);
}
/**
* Produces a Curried Func1 that calls the provided Func2 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*/
public static Func1 func1(final P1 param1,
final Func2 function)
{
return of(function, param1);
}
/**
* Produces a Curried Func1 that calls the provided Func3 passing it the fixed parameters
* param1 and param2 along with the actual parameters to the apply() method.
*/
public static Func1 func1(final P1 param1,
final P2 param2,
final Func3 function)
{
return of(function, param1, param2);
}
/**
* Produces a Curried Func1 that calls the provided Func4 passing it the fixed parameters
* param1 and param2 along with the actual parameters to the apply() method.
*/
public static Func1 func1(final P1 param1,
final P2 param2,
final P3 param3,
final Func4 function)
{
return of(function, param1, param2, param3);
}
}