comb - npm Package Compare versions

Comparing version 0.2.5 to 0.2.6

docs-md/introduction.md

@@ -1244,4 +1244,24 @@ #Comb
 comb(obj).values(); //["b", "d", "f"]                                                                                          
-```                                       
+```
 
+###`pick`
+
+Pick certain key/value pairs from a hash
+
+```
+var ob = {a: "a", b: "b", c: "c"};
+comb(obj).pick(["a", "b"]); //{a: "a", b:'b'}
+comb(obj).pick("c"); //{c: "c"};
+```
+
+###`omit`
+
+Omit certain key/value pairs from a hash
+
+```
+var ob = {a: "a", b: "b", c: "c"};
+comb(obj).omit(["a", "b"]); //{c: "c"}
+comb(obj).omit("c"); //{a: "a", b: "b"};
+```
+
 ###`toArray`
@@ -1248,0 +1268,0 @@

History.md

@@ -0,1 +1,12 @@
+# 0.2.6
+
+* Added new methods to `comb.hash`
+   * `pick` - pick only certain key/value pairs from an object
+   * `omit` - omit certain key/value pairs from an object
+
+# 0.2.5
+
+* Fixed the additions of weekdays on dates that span weekends. …
+   *  new Date(2013, 11, 19, 0, 0, 0) + 3 weekdays should be tuesday not Sunday
+
 # 0.2.4
@@ -2,0 +13,0 @@

lib/base/object.js

@@ -5,4 +5,14 @@ var comb = exports,
     isArguments = misc.isArguments,
-    pSlice = Array.prototype.slice;
+    pSlice = Array.prototype.slice,
+    pToString = Object.prototype.toString,
+    _baseArray, _baseString;
 
+function baseArray() {
+    return _baseArray || (_baseArray = require("./array").array);
+}
+
+function baseString() {
+    return _baseString || (_baseString = require("./string"));
+}
+
 //taken from node js assert.js
@@ -320,4 +330,76 @@ //https://github.com/joyent/node/blob/master/lib/assert.js
 
+/**
+ * Returns a new hash with the specified keys omitted from the hash.
+ *
+ * ```
+ * var obj = {a: "a", b: "b", c: "c"};
+ *
+ * //as a function
+ * comb.hash.omit(obj, ["a", "b"]); //{c: "c"}
+ * comb.hash.omit(obj, "c"); //{a: "a", b: "b"};
+ *
+ * //as a monad
+ * comb(obj).omit(["a", "b"]); //{c: "c"}
+ * comb(obj).omit("c"); //{a: "a", b: "b"};
+ *
+ * ```
+ *
+ * @param {Object} hash The hash to omit values from
+ * @param {Array|String} omitted the keys to omit.
+ * @returns {Object} a new Object with the keys omitted
+ * @memberOf comb.hash
+ */
+function omit(hash, omitted) {
+    if (!isHash(hash)) {
+        throw new TypeError("expected object got ", pToString.call(hash));
+    }
+    if (baseString().isString(omitted)) {
+        omitted = [omitted];
+    }
+    var objKeys = baseArray().difference(Object.keys(hash), omitted), key, ret = {};
+    for (var i = 0, len = objKeys.length; i < len; ++i) {
+        key = objKeys[i];
+        ret[key] = hash[key];
+    }
+    return ret;
+}
 
 /**
+ * Returns a new hash with the specified keys omitted from the hash.
+ *
+ * ```
+ * var obj = {a: "a", b: "b", c: "c"};
+ *
+ * //as a function
+ * comb.hash.pick(obj, ["a", "b"]); //{a: "a", b:'b'}
+ * comb.hash.pick(obj, "c"); //{c: "c"};
+ *
+ * //as a monad
+ * comb(obj).pick(["a", "b"]); //{a: "a", b:'b'}
+ * comb(obj).pick("c"); //{c: "c"};
+ *
+ * ```
+ *
+ * @param {Object} hash The hash to pick values from
+ * @param {Array|String} picked the keys to pick.
+ * @returns {Object} a new Object with only the keys specified
+ * @memberOf comb.hash
+ */
+function pick(hash, picked) {
+    if (!isHash(hash)) {
+        throw new TypeError("expected object got ", pToString.call(hash));
+    }
+    if (baseString().isString(picked)) {
+        picked = [picked];
+    }
+    var objKeys = baseArray().intersect(Object.keys(hash), picked), key, ret = {};
+    for (var i = 0, len = objKeys.length; i < len; ++i) {
+        key = objKeys[i];
+        ret[key] = hash[key];
+    }
+    return ret;
+}
+
+
+/**
  * Loops through each k/v in a hash.
@@ -473,7 +555,9 @@ *
 comb.hash = {
-    forEach:forEach,
-    filter:filter,
-    invert:invert,
-    values:values,
-    toArray:toArray
+    forEach: forEach,
+    omit: omit,
+    pick: pick,
+    filter: filter,
+    invert: invert,
+    values: values,
+    toArray: toArray
 };
@@ -480,0 +564,0 @@

lib/extensions/object.js

@@ -24,3 +24,6 @@ var base = require("../base"),
     "values",
-    "toArray"
+    "toArray",
+    "omit",
+    "pick",
+    "keys"
 ];
@@ -27,0 +30,0 @@

lib/promise.js

@@ -700,3 +700,3 @@ var define = require("./define").define,
  *      },
- *      funciton(err){
+ *      function(err){
  *
@@ -703,0 +703,0 @@ *      }  console.error(err);

package.json

 {
     "name": "comb",
     "description": "A framework for node",
-    "version": "0.2.5",
+    "version": "0.2.6",
     "keywords": ["OO", "Object Oriented", "Collections", "Tree", "HashTable", "Pool", "Logging", "Promise", "Promises", "Proxy"],
@@ -6,0 +6,0 @@ "repository": {

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Improved metrics

Total package byte prevSize

2887914

increased by0.27%

Lines of code

11625

increased by0.72%

No dependency changes