fn-pasta - npm Package Compare versions

Comparing version 0.0.3 to 0.0.4

fn-pasta.js

@@ -6,3 +6,3 @@ // pasta.js
   function comp (args) {
-    if (!Array.isArray(args)) args = p.arrify(arguments)
+    if (!Array.isArray(args)) args = p.slice(arguments)
     return function (input) {
@@ -16,8 +16,7 @@ return args.reduceRight(function (last, cur) {
   function partial (fn) {
-    var args = p.arrify(arguments)
-    args.shift() // remove the function
+    var args = p.slice(arguments, 1)
     return function () {
-      var innerArgs = p.arrify(arguments)
+      var innerArgs = p.slice(arguments)
       return fn.apply(this, args.map(function (arg) {
-          if (arg == null) return innerArgs.shift()
+          if (typeof arg === 'undefined') return innerArgs.shift()
           return arg
@@ -29,4 +28,15 @@ }).concat(innerArgs)
 
+  function curry (fn, times) {
+    var args = []
+      , self = this
+    if (!(times >= 2)) times = 2
+    return function currying (arg) {
+      args.push(arg)
+      if (args.length === times) return fn.apply(self, args)
+      return currying
+    }
+  }
+
   var numOfArgs =
-    { '1': function (fn) { return function (arg) { return fn(arg) } }
+    { '1': function (fn) { return function (a) { return fn(a) } }
     , '2': function (fn) { return function (a, b) { return fn(a, b) } }
@@ -39,3 +49,3 @@ , '3': function (fn) { return function (a, b, c) { return fn(a, b, c) } }
       return function () {
-        return fn.apply(null, p.arrify(arguments).slice(0, num))
+        return fn.apply(null, p.slice(arguments).slice(0, num))
       }
@@ -52,3 +62,3 @@ }
         if (typeof def !== 'undefined') val = def(cas)
-        else if (typeof obj._default !== 'undefined') val = obj._default
+        else if (typeof obj._default === 'string') val = obj[obj._default]
         else val = obj['default']
@@ -88,2 +98,4 @@ }
     , '': function (a) { return a }
+    // Default
+    , '_default': ''
     }
@@ -95,2 +107,10 @@
 
+  function all (fn) {
+    fn = args(2)(fn)
+    return function () {
+      var args = p.slice(arguments)
+      return args.reduce(fn)
+    }
+  }
+
   function get (key) {
@@ -110,2 +130,4 @@ return function (obj) {
     , partial: partial
+    , curry: curry
+    , all: all
     }
@@ -112,0 +134,0 @@

package.json

 { "name": "fn-pasta"
-, "version": "0.0.3"
+, "version": "0.0.4"
 , "author": "Nick Niemeir <[e-mail]> (http://nrn.io)"
@@ -4,0 +4,0 @@ , "main": "fn-pasta.js"

readme.md

@@ -14,7 +14,14 @@ Functional Pasta
 
-partial(fn, [args, ...])
+partial(fn[, args, ...])
 ------------------------
 
-Return fn with arguments applied. Blank spots are held for nulls.
+Return fn with arguments applied. Passing undefined will leave a hole
+that will be filled with arguments from the second fn call before
+the rest are appended to the arguments list.
 
+curry(fn[, times])
+------------------
+Return a function that takes a single argument *times* number of times,
+and then calls fn in the context it was called in. *times* defaults/min is 2.
+
 limit(num)
@@ -47,1 +54,7 @@ ----------
 
+all(fn)
+-------
+
+Return a function that reduces all of it's arguments over fn. fn gets passed
+two arguments at a time.
+

t/fn-pasta.js

@@ -8,22 +8,25 @@ var p = require('../fn-pasta')()
       , asdf: 42
-      , _default: 'blah'
+      , default: 'blah'
       }
+    , strDef =
+      { foo: 'bar'
+      , asdf: 42
+      , _default: 'asdf'
+      }
     , caseObj = p.casify(obj)
+    , strDefCas = p.casify(strDef)
     , otherCase = p.casify(obj, function () {return 'doh'})
+    , add = p.op('+')
+    , sum = p.all(p.op('+'))
 
-  function add (a, b) {
-    return a + b
-  }
-
-  t.plan(15)
-
   t.equal(p.d('asdf'), 'asdf', 'Ident function')
 
   t.equal(caseObj('foo'), 'bar', 'Existing case')
-  t.equal(caseObj('weeeeee'), 'blah', 'Non-extant case')
-  t.equal(otherCase('notThere'), 'doh', 'Non-extant explicit default')
+  t.equal(strDefCas('n/a'), 42, 'Default property')
+  t.equal(caseObj('weeeeee'), 'blah', 'Default value')
+  t.equal(otherCase('notThere'), 'doh', 'Default function')
 
   t.equal(p.one(add)('a', 'b'), 'aundefined', 'One uses only the first arg')
-  t.equal(p.args(4)(function (a, b, c, d, e) { return e })(1, 2, 3, 4, 5, 6)
-      , undefined
+  t.equal(p.args(4)(sum)(1, 2, 3, 4, 5, 6)
+      , 10
       , 'Arg limit using default/limit fn')
@@ -45,4 +48,9 @@
 
-  t.equal(p.partial(add, null, 'b')('c'), 'cb','Partial application')
+  t.equal(p.partial(add, undefined, 'b')('c'), 'cb','Partial application')
 
+
+  t.equal(p.curry(add)(1)(1), 2, 'Curry default')
+  t.equal(p.curry(sum, 5)(1)(2)(3)(4)(5), 15, 'Curry 5 times')
+
+  t.end()
 })

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Improved metrics

Total package byte prevSize

7802

increased by16.43%

Lines of code

156

increased by21.88%

Number of lines in readme file

59

increased by28.26%

No dependency changes