Partial application for F3 and F4

Mark Perry · Mark Perry · commit 28f099f867b8 · 2014-07-02T16:24:17.000+10:00
diff --git a/core/src/main/java/fj/F3Functions.java b/core/src/main/java/fj/F3Functions.java
@@ -26,4 +26,14 @@ static public <A, B, C, D> F3<A, B, C, Validation<Exception, D>> toF3(final TryC
         };
     }
 
+    /**
+     * Partial application.
+     *
+     * @param a The <code>A</code> to which to apply this function.
+     * @return The function partially applied to the given argument.
+     */
+    static public <A, B, C, D> F2<B, C, D> f(final F3<A, B, C, D> f, final A a) {
+        return (b, c) -> f.f(a, b, c);
+    }
+
 }
diff --git a/core/src/main/java/fj/F4Functions.java b/core/src/main/java/fj/F4Functions.java
@@ -24,4 +24,14 @@ static public <A, B, C, D, E> F4<A, B, C, D, Validation<Exception, E>> toF4(fina
         };
     }
 
+    /**
+     * Partial application.
+     *
+     * @param a The <code>A</code> to which to apply this function.
+     * @return The function partially applied to the given argument.
+     */
+    static public <A, B, C, D, E> F3<B, C, D, E> f(final F4<A, B, C, D, E> f, final A a) {
+        return (b, c, d) -> f.f(a, b, c, d);
+    }
+
 }

Original file line number	Diff line number	Diff line change
`@@ -26,4 +26,14 @@ static public <A, B, C, D> F3<A, B, C, Validation<Exception, D>> toF3(final TryC`
`26`	`26`	`};`
`27`	`27`	`}`
`28`	`28`
	`29`	`+ /**`
	`30`	`+ * Partial application.`
	`31`	`+ *`
	`32`	`+ * @param a The <code>A</code> to which to apply this function.`
	`33`	`+ * @return The function partially applied to the given argument.`
	`34`	`+ */`
	`35`	`+ static public <A, B, C, D> F2<B, C, D> f(final F3<A, B, C, D> f, final A a) {`
	`36`	`+ return (b, c) -> f.f(a, b, c);`
	`37`	`+ }`
	`38`	`+`
`29`	`39`	`}`
Original file line number	Diff line number	Diff line change
`@@ -24,4 +24,14 @@ static public <A, B, C, D, E> F4<A, B, C, D, Validation<Exception, E>> toF4(fina`
`24`	`24`	`};`
`25`	`25`	`}`
`26`	`26`
	`27`	`+ /**`
	`28`	`+ * Partial application.`
	`29`	`+ *`
	`30`	`+ * @param a The <code>A</code> to which to apply this function.`
	`31`	`+ * @return The function partially applied to the given argument.`
	`32`	`+ */`
	`33`	`+ static public <A, B, C, D, E> F3<B, C, D, E> f(final F4<A, B, C, D, E> f, final A a) {`
	`34`	`+ return (b, c, d) -> f.f(a, b, c, d);`
	`35`	`+ }`
	`36`	`+`
`27`	`37`	`}`