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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="http://code.jquery.com/jquery-2.1.0.min.js"></script> | |
| <meta charset="utf-8"> | |
| <title>JS Bin</title> | |
| <script src="https://raw.githack.com/CrossEye/ramda/master/ramda.js"></script> | |
| <script src="http://looprecur.com/hostedjs/pointfree.browser.js"></script> | |
| <script src="http://looprecur.com/hostedjs/monoids.js"></script> | |
| <script src="http://looprecur.com/hostedjs/maybe.js"></script> | |
| <script src="http://looprecur.com/hostedjs/id.js"></script> | |
| <script src="http://looprecur.com/hostedjs/io.js"></script> | |
| <script src="http://looprecur.com/hostedjs/id.js"></script> | |
| <script src="http://looprecur.com/hostedjs/data.either.umd.js"></script> | |
| <script src="http://looprecur.com/hostedjs/data.future.umd.js"></script> | |
| <script src="http://looprecur.com/hostedjs/Bacon.min.js"></script> | |
| <script src="http://looprecur.com/hostedjs/function.js"></script> | |
| <script src="http://looprecur.com/hostedjs/array.js"></script> | |
| <script src="http://looprecur.com/hostedjs/string.js"></script> | |
| <script src="http://looprecur.com/hostedjs/exec_helpers.js"></script> | |
| </head> | |
| <body> | |
| <script id="jsbin-javascript"> | |
| console.clear(); | |
| var _ = ramda; | |
| var P = PointFree; | |
| var map = P.fmap; | |
| var compose = P.compose; | |
| var Maybe = P.Maybe; | |
| var Identity = P.Id; | |
| // Exercise 1 | |
| // ========== | |
| // Use _.add(x,y) and map(f,x) to make a function that increments a value inside a functor | |
| console.log("--------Start exercise 1--------") | |
| var ex1 = undefined | |
| assertDeepEqual(Identity(3), ex1(Identity(2))) | |
| console.log("exercise 1...ok!") | |
| // Exercise 2 | |
| // ========== | |
| // Use _.head to get the first element of the list | |
| var xs = Identity(['do', 'ray', 'me', 'fa', 'so', 'la', 'ti', 'do']) | |
| console.log("--------Start exercise 2--------") | |
| var ex2 = undefined | |
| assertDeepEqual(Identity('do'), ex2(xs)) | |
| console.log("exercise 2...ok!") | |
| // Exercise 3 | |
| // ========== | |
| // Use safeGet and _.head to find the first initial of the user | |
| var safeGet = _.curry(function(x,o){ return Maybe(o[x]) }) | |
| var user = {id: 2, name: "Albert"} | |
| console.log("--------Start exercise 3--------") | |
| var ex3 = undefined; | |
| assertDeepEqual(Maybe('A'), ex3(user)) | |
| console.log("exercise 3...ok!") | |
| // Exercise 4 | |
| // ========== | |
| // Use Maybe to rewrite ex4 without an if statement | |
| console.log("--------Start exercise 4--------") | |
| var ex4 = function(n) { | |
| if(n){ | |
| return parseInt(n); | |
| } | |
| } | |
| assertDeepEqual(Maybe(4), ex4("4")) | |
| console.log("exercise 4...ok!") | |
| // TEST HELPERS | |
| // ===================== | |
| function inspectIt(x){ | |
| return (x.inspect && x.inspect()) || (x.toString && x.toString()) || x.valueOf(); //hacky for teachy. | |
| } | |
| function assertEqual(x,y){ | |
| if(x !== y){ throw("expected "+x+" to equal "+y); } | |
| } | |
| function assertDeepEqual(x,y){ | |
| if(x.val !== y.val) throw("expected "+inspectIt(x)+" to equal "+inspectIt(y)); | |
| } | |
| </script> | |
| <script id="jsbin-source-javascript" type="text/javascript">console.clear(); | |
| var _ = ramda; | |
| var P = PointFree; | |
| var map = P.fmap; | |
| var compose = P.compose; | |
| var Maybe = P.Maybe; | |
| var Identity = P.Id; | |
| // Exercise 1 | |
| // ========== | |
| // Use _.add(x,y) and map(f,x) to make a function that increments a value inside a functor | |
| console.log("--------Start exercise 1--------") | |
| var ex1 = undefined | |
| assertDeepEqual(Identity(3), ex1(Identity(2))) | |
| console.log("exercise 1...ok!") | |
| // Exercise 2 | |
| // ========== | |
| // Use _.head to get the first element of the list | |
| var xs = Identity(['do', 'ray', 'me', 'fa', 'so', 'la', 'ti', 'do']) | |
| console.log("--------Start exercise 2--------") | |
| var ex2 = undefined | |
| assertDeepEqual(Identity('do'), ex2(xs)) | |
| console.log("exercise 2...ok!") | |
| // Exercise 3 | |
| // ========== | |
| // Use safeGet and _.head to find the first initial of the user | |
| var safeGet = _.curry(function(x,o){ return Maybe(o[x]) }) | |
| var user = {id: 2, name: "Albert"} | |
| console.log("--------Start exercise 3--------") | |
| var ex3 = undefined; | |
| assertDeepEqual(Maybe('A'), ex3(user)) | |
| console.log("exercise 3...ok!") | |
| // Exercise 4 | |
| // ========== | |
| // Use Maybe to rewrite ex4 without an if statement | |
| console.log("--------Start exercise 4--------") | |
| var ex4 = function(n) { | |
| if(n){ | |
| return parseInt(n); | |
| } | |
| } | |
| assertDeepEqual(Maybe(4), ex4("4")) | |
| console.log("exercise 4...ok!") | |
| // TEST HELPERS | |
| // ===================== | |
| function inspectIt(x){ | |
| return (x.inspect && x.inspect()) || (x.toString && x.toString()) || x.valueOf(); //hacky for teachy. | |
| } | |
| function assertEqual(x,y){ | |
| if(x !== y){ throw("expected "+x+" to equal "+y); } | |
| } | |
| function assertDeepEqual(x,y){ | |
| if(x.val !== y.val) throw("expected "+inspectIt(x)+" to equal "+inspectIt(y)); | |
| } | |
| </script></body> | |
| </html> |
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| console.clear(); | |
| var _ = ramda; | |
| var P = PointFree; | |
| var map = P.fmap; | |
| var compose = P.compose; | |
| var Maybe = P.Maybe; | |
| var Identity = P.Id; | |
| // Exercise 1 | |
| // ========== | |
| // Use _.add(x,y) and map(f,x) to make a function that increments a value inside a functor | |
| console.log("--------Start exercise 1--------") | |
| var ex1 = undefined | |
| assertDeepEqual(Identity(3), ex1(Identity(2))) | |
| console.log("exercise 1...ok!") | |
| // Exercise 2 | |
| // ========== | |
| // Use _.head to get the first element of the list | |
| var xs = Identity(['do', 'ray', 'me', 'fa', 'so', 'la', 'ti', 'do']) | |
| console.log("--------Start exercise 2--------") | |
| var ex2 = undefined | |
| assertDeepEqual(Identity('do'), ex2(xs)) | |
| console.log("exercise 2...ok!") | |
| // Exercise 3 | |
| // ========== | |
| // Use safeGet and _.head to find the first initial of the user | |
| var safeGet = _.curry(function(x,o){ return Maybe(o[x]) }) | |
| var user = {id: 2, name: "Albert"} | |
| console.log("--------Start exercise 3--------") | |
| var ex3 = undefined; | |
| assertDeepEqual(Maybe('A'), ex3(user)) | |
| console.log("exercise 3...ok!") | |
| // Exercise 4 | |
| // ========== | |
| // Use Maybe to rewrite ex4 without an if statement | |
| console.log("--------Start exercise 4--------") | |
| var ex4 = function(n) { | |
| if(n){ | |
| return parseInt(n); | |
| } | |
| } | |
| assertDeepEqual(Maybe(4), ex4("4")) | |
| console.log("exercise 4...ok!") | |
| // TEST HELPERS | |
| // ===================== | |
| function inspectIt(x){ | |
| return (x.inspect && x.inspect()) || (x.toString && x.toString()) || x.valueOf(); //hacky for teachy. | |
| } | |
| function assertEqual(x,y){ | |
| if(x !== y){ throw("expected "+x+" to equal "+y); } | |
| } | |
| function assertDeepEqual(x,y){ | |
| if(x.val !== y.val) throw("expected "+inspectIt(x)+" to equal "+inspectIt(y)); | |
| } |
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