Improve and reorder curry examples

Author: tshemsedinov

JavaScript/5-bad.js

@@ -0,0 +1,24 @@
+'use strict';
+
+const curry = fn => (...args) => (
+  fn.length > args.length ? curry(
+    ((fn, ...args1) => (...args2) => (
+      fn(...args1.concat(args2))
+    ))(fn, ...args)
+  ) : fn(...args)
+);
+
+// Usage
+
+const sum4 = (a, b, c, d) => (a + b + c + d);
+
+const f = curry(sum4);
+const y1 = sum4(1, 2, 3, 4);
+const y2 = f(1, 2, 3, 4);
+const y3 = f(1, 2, 3)(4);
+const y4 = f(1, 2)(3)(4);
+const y5 = f(1)(2)(3)(4);
+const y6 = f(1)(2, 3, 4);
+const y7 = f(1)(2)(3, 4);
+const y8 = f(1, 2)(3, 4);
+console.log(y1, y2, y3, y4, y5, y6, y7, y8);

JavaScript/6-curry-bad.js

@@ -0,0 +1,25 @@
+'use strict';
+
+const curry = fn => (...args) => {
+  if (fn.length > args.length) {
+    const f = fn.bind(null, ...args);
+    return curry(f);
+  } else {
+    return fn(...args);
+  }
+};
+
+// Usage
+
+const sum4 = (a, b, c, d) => (a + b + c + d);
+
+const f = curry(sum4);
+const y1 = sum4(1, 2, 3, 4);
+const y2 = f(1, 2, 3, 4);
+const y3 = f(1, 2, 3)(4);
+const y4 = f(1, 2)(3)(4);
+const y5 = f(1)(2)(3)(4);
+const y6 = f(1)(2, 3, 4);
+const y7 = f(1)(2)(3, 4);
+const y8 = f(1, 2)(3, 4);
+console.log(y1, y2, y3, y4, y5, y6, y7, y8);

JavaScript/6-curry.js

@@ -0,0 +1,25 @@
+'use strict';
+
+const curry = (fn, ...par) => {
+  const curried = (...args) => (
+    fn.length > args.length ?
+      curry(fn.bind(null, ...args)) :
+      fn(...args)
+  );
+  return par.length ? curried(...par) : curried;
+};
+
+// Usage
+
+const sum4 = (a, b, c, d) => (a + b + c + d);
+
+const f = curry(sum4);
+const y1 = sum4(1, 2, 3, 4);
+const y2 = f(1, 2, 3, 4);
+const y3 = f(1, 2, 3)(4);
+const y4 = f(1, 2)(3)(4);
+const y5 = f(1)(2)(3)(4);
+const y6 = f(1)(2, 3, 4);
+const y7 = f(1)(2)(3, 4);
+const y8 = f(1, 2)(3, 4);
+console.log(y1, y2, y3, y4, y5, y6, y7, y8);