diff --git a/src/stdlib/ns/fn.es6 b/src/stdlib/ns/fn.es6
new file mode 100644
index 00000000..2e7e6ed9
--- /dev/null
+++ b/src/stdlib/ns/fn.es6
@@ -0,0 +1,17 @@
+export default function(cheddar){
+    return cheddar.namespace([
+        ["hook", cheddar.from(require("./fn/hook"))],
+        ["fork", cheddar.from(require("./fn/fork"))],
+        ["reflexive", cheddar.from(require("./fn/reflexive"))],
+        ["dbl", cheddar.from(require("./fn/dbl"))],
+        ["pref", cheddar.from(require("./fn/pref"))],
+        ["insert", cheddar.from(require("./fn/insert"))],
+        ["prefix", cheddar.from(require("./fn/prefix"))],
+        ["id", cheddar.from(require("./fn/id"))],
+        ["curry", cheddar.from(require("./fn/curry"))],
+        ["bind", cheddar.from(require("./fn/bind"))],
+        ["rev", cheddar.from(require("./fn/rev"))],
+        ["repeat", cheddar.from(require("./fn/repeat"))],
+        ["of", cheddar.from(require("./fn/of"))]
+    ]);
+}
diff --git a/src/stdlib/ns/fn/bind.es6 b/src/stdlib/ns/fn/bind.es6
new file mode 100644
index 00000000..aebde74a
--- /dev/null
+++ b/src/stdlib/ns/fn/bind.es6
@@ -0,0 +1,29 @@
+export default function bind(cheddar) {
+    return new cheddar.func(
+        [
+            ["args", {Splat: true}]
+        ],
+        function(scope, input){
+            let args = input("args").value;
+            if(args[0] instanceof cheddar.func){
+                let f = args.shift();
+                return new cheddar.func(
+                    [["b", {Splat: true}]],
+                    function(s, k){
+                        return f.exec(k("b").value.concat(args), null);
+                    }
+                );
+            } else if(args[args.length - 1] instanceof cheddar.func){
+                let f = args.pop();
+                return new cheddar.func(
+                    [["b", {Splat: true}]],
+                    function(s, k){
+                        return f.exec(args.concat(k("b").value), null);
+                    }
+                );
+            } else {
+                return "Expected function as first or last argument.";
+            }
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/curry.es6 b/src/stdlib/ns/fn/curry.es6
new file mode 100644
index 00000000..ce0d9ecf
--- /dev/null
+++ b/src/stdlib/ns/fn/curry.es6
@@ -0,0 +1,19 @@
+export default function curry(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }],
+            ["a", {}]
+        ],
+        function(scope, input){
+            return new cheddar.func(
+                [["b", {}]],
+                function(s, k){
+                    let f = input("f");
+                    let a = input("a");
+                    let b = k("b");
+                    return f.exec([a, b], null);
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/fork.es6 b/src/stdlib/ns/fn/fork.es6
new file mode 100644
index 00000000..7c618661
--- /dev/null
+++ b/src/stdlib/ns/fn/fork.es6
@@ -0,0 +1,26 @@
+export default function fork(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }],
+            ["g", { Type: cheddar.func }],
+            ["h", { Type: cheddar.func }]
+        ],
+        function(scope, input){
+            return new cheddar.func(
+                [["args", {Splat: true}]],
+                function(s, k){
+                    let args = k("args").value;
+
+                    let f = input("f");
+                    let g = input("g");
+                    let h = input("h");
+
+                    return g.exec([
+                        f.exec(args, null),
+                        h.exec(args, null)
+                    ], null);
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/hook.es6 b/src/stdlib/ns/fn/hook.es6
new file mode 100644
index 00000000..dc7990e0
--- /dev/null
+++ b/src/stdlib/ns/fn/hook.es6
@@ -0,0 +1,27 @@
+export default function hook(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }],
+            ["g", { Type: cheddar.func }]
+        ],
+        function(scope, input, args){
+            if(args.length !== 2)
+                return `Expected 2 arguments, received ${args.length}.`;
+
+            return new cheddar.func(
+                [["args", {Splat: true}]],
+                function(s, k){
+                    let args = k("args").value;
+
+                    if(args.length > 2 || !args.length)
+                        return `Expected 1 or 2 args, received ${args.length || "none"}`;
+
+                    let f = input("f");
+                    let g = input("g");
+
+                    return f.exec([args[0], g.exec([args.length === 1 ? args[0] : args[1]], null)], null);
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/id.es6 b/src/stdlib/ns/fn/id.es6
new file mode 100644
index 00000000..e77d8120
--- /dev/null
+++ b/src/stdlib/ns/fn/id.es6
@@ -0,0 +1,8 @@
+export default function id(cheddar) {
+    return new cheddar.func(
+        [["a", { Type: cheddar.func }]],
+        function(scope, input){
+            return input("a");
+        }
+    )
+}
diff --git a/src/stdlib/ns/fn/insert.es6 b/src/stdlib/ns/fn/insert.es6
new file mode 100644
index 00000000..2450dd74
--- /dev/null
+++ b/src/stdlib/ns/fn/insert.es6
@@ -0,0 +1,25 @@
+export default function insert(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }],
+        ],
+        function(scope, input){
+            return new cheddar.func(
+                [["array", {
+                    Type: cheddar.array
+                }]],
+                function(s, k){
+                    let arr = k("array");
+                    let f = input("f");
+
+                    if(arr.length === 1)
+                        return arr;
+
+                    // console.log("DEBUG:",arr);
+
+                    return arr.value.reduce((prev, cur) => f.exec([prev, cur], null));
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/of.es6 b/src/stdlib/ns/fn/of.es6
new file mode 100644
index 00000000..30179a7f
--- /dev/null
+++ b/src/stdlib/ns/fn/of.es6
@@ -0,0 +1,51 @@
+import { UOP, OP } from "../../../tokenizer/consts/ops";
+import fork from "./fork";
+
+const ops = [
+    "+", "*", "**", "-", "^",
+    "&", "|", "/", "%", "@\""
+];     // TODO: make dynamic
+
+const parse = (str) => {
+    let tokens = [];
+    for(let i = 0; i < str.length; i++){
+        if(!ops.some(x => x[0] === str[i])) continue;
+
+        let build = "";
+        while(ops.some(x => x.indexOf(build + str[i]) >= 0)){
+            build += str[i++];
+        }
+        i--;
+        tokens.push(build);
+    }
+    return tokens;
+}
+
+export default function insert(cheddar) {
+    return new cheddar.func(
+        [
+            ["str", {
+                Type: cheddar.string
+            }],
+        ],
+        function(scope, input){
+            let str = input("str");
+            let toks = parse(str.value);
+            if(toks.length !== 3){
+                return "I haven't implemented this yet.";
+            }
+            return fork.exec(...toks.map(e =>
+                new cheddar.func(
+                    ["LHS", { }],
+                    ["RHS", { Optional: true }],
+                    function(_scope, _input){
+                        let LHS = input("LHS");
+                        let RHS = input("RHS");
+
+                        return LHS.Operator.get(e)(RHS ? LHS : null, RHS || LHS);
+                    }
+                )
+            ), null);
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/pref.es6 b/src/stdlib/ns/fn/pref.es6
new file mode 100644
index 00000000..a71de9f2
--- /dev/null
+++ b/src/stdlib/ns/fn/pref.es6
@@ -0,0 +1,12 @@
+export default function pref(cheddar) {
+    return new cheddar.func(
+        [
+            ["array", {}],
+        ],
+        function(scope, input){
+            return cheddar.init(cheddar.array, ...input("array").value.map(
+                (e, i, a) => cheddar.init(cheddar.array, ...a.slice(0, i + 1))
+            ));
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/prefix.es6 b/src/stdlib/ns/fn/prefix.es6
new file mode 100644
index 00000000..e7620fb4
--- /dev/null
+++ b/src/stdlib/ns/fn/prefix.es6
@@ -0,0 +1,18 @@
+export default function prefix(cheddar) {
+    return new cheddar.func(
+        [["f", { Type: cheddar.func }]],
+        function(scope, k){
+            return new cheddar.func(
+                [["array", {}]],
+                function(s, input){
+                    let f = k("f");
+                    return cheddar.init(cheddar.array, ...input("array").value.map(
+                        (e, i, a) => f.exec([
+                            cheddar.init(cheddar.array, ...a.slice(0, i + 1))
+                        ], null)
+                    ));
+                }
+            );
+        }
+    )
+}
diff --git a/src/stdlib/ns/fn/reflexive.es6 b/src/stdlib/ns/fn/reflexive.es6
new file mode 100644
index 00000000..a22fefb3
--- /dev/null
+++ b/src/stdlib/ns/fn/reflexive.es6
@@ -0,0 +1,17 @@
+export default function reflexive(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }],
+        ],
+        function(scope, input){
+            return new cheddar.func(
+                [["a", {}]],
+                function(s, k){
+                    let f = input("f");
+
+                    return f.exec(Array(f.args.length).fill(k("a")), null);
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/repeat.es6 b/src/stdlib/ns/fn/repeat.es6
new file mode 100644
index 00000000..1141e651
--- /dev/null
+++ b/src/stdlib/ns/fn/repeat.es6
@@ -0,0 +1,27 @@
+export default function repeat(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }],
+            ["n", {}]
+        ],
+        function(scope, input){
+            return new cheddar.func(
+                [["args", { Splat: true }]],
+                function(s, k){
+                    let f = input("f");
+                    let n = input("n").value;
+                    let args = k("args");
+                    if(n === 0)
+                        return args;
+
+                    args = args.value;
+                    let res = f.exec(args, null);
+                    while(--n > 0){
+                        res = f.exec([res], null);
+                    }
+                    return res;
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/ns/fn/rev.es6 b/src/stdlib/ns/fn/rev.es6
new file mode 100644
index 00000000..6c549769
--- /dev/null
+++ b/src/stdlib/ns/fn/rev.es6
@@ -0,0 +1,16 @@
+export default function rev(cheddar) {
+    return new cheddar.func(
+        [
+            ["f", { Type: cheddar.func }]
+        ],
+        function(scope, input){
+            return new cheddar.func(
+                [["a", { Splat: true }]],
+                function(s, k){
+                    let a = k("a");
+                    return input("f").exec(a.value.reverse(), null);
+                }
+            )
+        }
+    );
+}
diff --git a/src/stdlib/stdlib.es6 b/src/stdlib/stdlib.es6
index ababd50e..a5d90e19 100644
--- a/src/stdlib/stdlib.es6
+++ b/src/stdlib/stdlib.es6
@@ -20,9 +20,11 @@ STDLIB.Item("Math");
 STDLIB.Item("Rational");
 
 // Interface Libraries
-STDLIB.Item("Encoding");
-STDLIB.Item("Buffer");
-STDLIB.Item("IO", true);
+STDLIB.Item("Encoding", require('./ns/Encoding'));
+STDLIB.Item("Buffer", require('./ns/Buffer'));
+STDLIB.Item("IO", require('./ns/IO'));
+STDLIB.Item("fn", require("./ns/fn"));
+//STDLIB.Item("HTTP", require('./ns/HTTP'));
 
 /** Primitives **/
 STDLIB.p("String",  API.string);
diff --git a/test.cdr b/test.cdr
new file mode 100644
index 00000000..368e3bfc
--- /dev/null
+++ b/test.cdr
@@ -0,0 +1,3 @@
+var fib = (n) -> {
+    print n
+}
diff --git a/test/tests/stdlib/fn.js b/test/tests/stdlib/fn.js
new file mode 100644
index 00000000..fc8e7916
--- /dev/null
+++ b/test/tests/stdlib/fn.js
@@ -0,0 +1,22 @@
+var TestCheddarFrom = require('../globals').TestCheddarFrom;
+var chai = require('chai');
+
+describe("fn", function(){
+    describe("reflexive", function(){
+        it("should work", TestCheddarFrom.Code(
+            "fn.reflexive((+))(3)",
+            "6"
+        ));
+        it("should work", TestCheddarFrom.Code(
+            "fn.reflexive((*))(3)",
+            "9"
+        ));
+    });
+
+    describe("hook", function(){
+        it("should work", TestCheddarFrom.Code(
+            "fn.hook((+),(sqrt),(-))(4)",
+            "6"
+        ));
+    });
+});