mini-linq-js - npm Package Compare versions

Comparing version 1.2.5 to 1.3.0

dist/mini-linq.full.min.js

@@ -25,2 +25,2 @@ /* ! https://github.com/akopachov/mini-linq-js */
  */
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dist/mini-linq.min.js

@@ -25,2 +25,2 @@ /* ! https://github.com/akopachov/mini-linq-js */
  */
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dist/mini-linq.with-knockout.min.js

@@ -25,2 +25,2 @@ /* ! https://github.com/akopachov/mini-linq-js */
  */
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dist/mini-linq.with-lazy.min.js

@@ -25,2 +25,2 @@ /* ! https://github.com/akopachov/mini-linq-js */
  */
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f=!0,g=0,h=a.length;h>g;g++)if(b(this[d],a[g])){f=!1;break}f&&c.push(this[d])}return c}}},LINQ.methods.firstOrDefault.finalize=!0,LINQ.methods.lastOrDefault.finalize=!0,LINQ.methods.count.finalize=!0,LINQ.methods.any.finalize=!0,LINQ.methods.contains.finalize=!0,LINQ.methods.all.finalize=!0,LINQ.methods.aggregate.finalize=!0,LINQ.methods.sum.finalize=!0,LINQ.methods.min.finalize=!0,LINQ.methods.max.finalize=!0;for(var key in LINQ.methods)LINQ.methods.hasOwnProperty(key)&&(Array.prototype[key]=LINQ.methods[key])}(),function(a){var b=[function(b,c){if(b.name===c.name&&"where"===c.name){var d=a.utils.parseExpression(b.args[0]),e=a.utils.parseExpression(c.args[0]);return function(c,d){return{name:b.name,args:[function(){return c.apply(this,arguments)&&d.apply(this,arguments)}],fn:a.methods[b.name]}}(d,e)}return!1},function(b,c){if(b.name===c.name&&"select"===c.name){var d=a.utils.parseExpression(b.args[0]),e=a.utils.parseExpression(c.args[0]);return function(c,d){return{name:b.name,args:[function(){return d.apply(this,[c.apply(this,arguments)])}],fn:a.methods[b.name]}}(d,e)}return!1},function(a,b){var c=["orderBy","orderByDescending"];return c.contains(a.name)&&c.contains(b.name)?b:!1},function(a,b){return"skip"==a.name&&"take"==b.name?function(a,b){return{name:"skiptake",args:[a,b],fn:function(a,b){return this.slice(a,a+b)}}}(a.args[0],b.args[0]):!1}],c=function(c){var d=this,e=c;d._modificatorQueue=[];var f=function(){for(var a=d._modificatorQueue.length,b=0;a>b;b++){var c=d._modificatorQueue[b];e=c.fn.apply(e,c.args)}return d._modificatorQueue.splice(0,a),a},g=function(){for(var a=0;a<d._modificatorQueue.length-1;){for(var c=d._modificatorQueue[a],e=d._modificatorQueue[a+1],f=!1,g=0,h=b.length;h>g;g++){var i=b[g],j=i(c,e);j&&(f=!0,d._modificatorQueue.splice(a+1,1),d._modificatorQueue[a]=j)}f||a++}};d.optimize=function(){return g(),d},d.toArray=function(){return e.length>100&&d._modificatorQueue.length>2&&d.optimize(),f(),a.utils.isArray(e)?e.slice(0):e}};Array.prototype.toLazy=function(){return new c(this)};for(var d in a.methods)a.methods.hasOwnProperty(d)&&(c.prototype[d]=function(b){return function(){var c=a.methods[b];return this._modificatorQueue.push({fn:a.methods[b],args:arguments,name:b}),c.finalize?this.toArray():this}}(d))}(LINQ);

package.json

 {
     "name": "mini-linq-js",
-    "version": "1.2.5",
+    "version": "1.3.0",
     "description": "LINQ for JavaScript library, which allows to work with arrays in a more easy way and focus on business logic.",
@@ -5,0 +5,0 @@ "homepage": "https://github.com/akopachov/mini-linq-js",

README.md

@@ -49,2 +49,3 @@ # mini-linq.js
 * [union](#union)
+* [except](#except)
 
@@ -200,5 +201,5 @@ ## Terms
 ###### Description:
-`.distinct` selects distinct elements by using [selector](#selector) as a key or element if [selector](#selector) is not specified.
+`.distinct` selects distinct elements by using [selector](#selector) as a key or element if [selector](#selector) is not specified, and [comparator](#comparator) (optional) to compare equality of keys
 ###### Arguments:
-`.distinct` may accept [selector](#selector).
+`.distinct` may accept [selector](#selector) as a first argument and [comparator](#comparator) as a second argument.
 ###### Returns:
@@ -209,3 +210,5 @@ Array of distinct elements.
 [2, 1, 2, 3, 1, 6, 7, 3, 2].distinct(); // will return [2, 1, 3, 6, 7]
-[2, 1, 2, 3, 1, 6, 7, 3, 2].distinct(d => d % 3) // will return [2, 1, 3]
+[2, 1, 2, 3, 1, 6, 7, 3, 2].distinct(d => d % 3); // will return [2, 1, 3]
+[1, 2, '2', '3', 3, 4, 5, 8, 5].distinct(); // will return [1, 2, '2', '3', 3, 4, 5, 8] (default comparator is "a === b";
+[1, 2, '2', '3', 3, 4, 5, 8, 5].distinct('x => x', '(a, b) => a == b'); // will return [1, 2, '3', 4, 5, 8] (here we used custom comparator)
 ```
@@ -415,15 +418,32 @@ ---
 ###### Description:
-`.union` combines two arrays together into single array.
+`.union` produces the set union of arrays by using the [comparator](#comparator) (optional) to compare values.
 ###### Arguments:
-`.union` accepts array to combine.
+`.union` accepts array to combine and may accept [comparator](#comparator) as a second argument.
 ###### Returns:
-Array of elemnts from source arrays.
+Array of merged elements from source arrays.
 ###### Example of usage:
 ```javascript
-[1, 2, 3, 4].union([2, 3, 4, 5]); // will return [1, 2, 3, 4, 2, 3, 4, 5]
+[1, 2, 3, 4].union([2, 3, 4, 5]); // will return [1, 2, 3, 4, 5]
 [1, 2, 3, 4].union([]); // will return [1, 2, 3, 4]
 [].union([]); // will return []
+[1, 2, 3, 4].union([2, '3', '4', 5], '(a, b) => a == b'); // will return [1, 2, 3, 4, 5];
 ```
 ---
 
+### <a name="except">.except</a>
+###### Description:
+`.except` produces the set difference of two arrays by using the [comparator](#comparator) (optional) to compare values.
+###### Arguments:
+`.except` accepts array to compare and may accept [comparator](#comparator) as a second argument.
+###### Returns:
+Array of differences of source arrays.
+###### Example of usage:
+```javascript
+[1, 2, 3, 4].except([3, 4, 5]); // will return [1, 2]
+[1, 2, 3, 4].except([5, 6, 7]); // will return [1, 2, 3, 4]
+[1, 2, 3, 4].except([1, 2, 3, 4]); // will return []
+[1, 2, 3, 4].except(['3', 4, '5'], '(a, b) => a == b'); // will return [1, 2]
+```
+---
+
 ## <a name="lazyArrays">Lazy array</a>
@@ -430,0 +450,0 @@ By default all mini-linq methods will execute their logic instantly and return result. But in some cases it may be useful to postpone execution, until some conditions take place.

src/mini-linq.js

@@ -322,3 +322,3 @@ /* ! https://github.com/akopachov/mini-linq-js */
 
-            distinct: function (selector) {
+            distinct: function (selector, comparator) {
                 if (typeof (selector) === "string") {
@@ -330,9 +330,28 @@ selector = LINQ.utils.parseExpression(selector);
 
+                if (typeof (comparator) === "string") {
+                    comparator = LINQ.utils.parseExpression(comparator);
+                } else if (typeof(comparator) !== 'function') {
+                    comparator = function(a, b) { return a === b; }
+                }
+
+                var unique = [];
                 var uniqueMap = {};
-                var unique = [];
                 for (var i = 0, l = this.length; i < l; i++) {
                     var key = selector(this[i], i, this);
                     if (!uniqueMap[key]) {
-                        uniqueMap[key] = true;
+                        uniqueMap[key] = [key];
                         unique.push(this[i]);
+                    } else {
+                        var isUnique = true;
+                        for (var j = 0, jl = uniqueMap[key].length; j < jl; j++) {
+                            if (comparator(uniqueMap[key][j], key)) {
+                                isUnique = false;
+                                break;
+                            }
+                        }
+
+                        if (isUnique) {
+                            unique.push(this[i]);
+                            uniqueMap[key].push(key);
+                        }
                     }
@@ -557,4 +576,51 @@ }
 
-            union: function(anotherCollection) {
-                return this.concat(anotherCollection);
+            union: function(anotherCollection, comparator) {
+                if (typeof (comparator) === "string") {
+                    comparator = LINQ.utils.parseExpression(comparator);
+                } else if (typeof (comparator) !== "function") {
+                    comparator = function (a, b) { return a === b; }
+                }
+
+                var result = [];
+                var allValues = [].concat(this, anotherCollection);
+                for (var i = 0, l = allValues.length; i < l; i++) {
+                    var addToResult = true;
+                    for (var j = 0, rl = result.length; j < rl; j++) {
+                        if (comparator(allValues[i], result[j])) {
+                            addToResult = false;
+                            break;
+                        }
+                    }
+
+                    if (addToResult) {
+                        result.push(allValues[i]);
+                    }
+                }
+
+                return result;
+            },
+
+            except: function(anotherCollection, comparator) {
+                if (typeof (comparator) === "string") {
+                    comparator = LINQ.utils.parseExpression(comparator);
+                } else if (typeof (comparator) !== "function") {
+                    comparator = function (a, b) { return a === b; }
+                }
+
+                var result = [];
+                for (var i = 0, l = this.length; i < l; i++) {
+                    var addToResult = true;
+                    for (var j = 0, rl = anotherCollection.length; j < rl; j++) {
+                        if (comparator(this[i], anotherCollection[j])) {
+                            addToResult = false;
+                            break;
+                        }
+                    }
+
+                    if (addToResult) {
+                        result.push(this[i]);
+                    }
+                }
+
+                return result;
             }
@@ -561,0 +627,0 @@ }

tests/test-core.js

@@ -176,2 +176,4 @@ if (typeof(require) !== 'undefined') {
             });
+        test.array([1, 2, '2', '3', 3, 4, 5, 8, 5].distinct()).is([1, 2, '2', '3', 3, 4, 5, 8]);
+        test.array([1, 2, '2', '3', 3, 4, 5, 8, 5].distinct('x => x', '(a, b) => a == b')).is([1, 2, '3', 4, 5, 8]);
     });
@@ -289,7 +291,16 @@
     it('.union', function() {
-        test.array([1, 2, 3, 4].union([2, 3, 4, 5])).is([1, 2, 3, 4, 2, 3, 4, 5]);
+        test.array([1, 2, 3, 4].union([2, 3, 4, 5])).is([1, 2, 3, 4, 5]);
+        test.array([1, 2, 3, 4].union([5, 6, 7, 8])).is([1, 2, 3, 4, 5, 6, 7, 8]);
         test.array([1, 2, 3, 4].union([])).is([1, 2, 3, 4]);
         test.array([].union([])).is([]);
+        test.array([1, 2, 3, 4].union([2, '3', '4', 5], '(a, b) => a == b')).is([1, 2, 3, 4, 5]);
     });
 
+    it('.except', function() {
+        test.array([1, 2, 3, 4].except([3, 4, 5])).is([1, 2]);
+        test.array([1, 2, 3, 4].except([5, 6, 7])).is([1, 2, 3, 4]);
+        test.array([1, 2, 3, 4].except([1, 2, 3, 4])).is([]);
+        test.array([1, 2, 3, 4].except(['3', 4, '5'], '(a, b) => a == b')).is([1, 2]);
+    });
+
     it('.selectMany', function() {
@@ -296,0 +307,0 @@ var testArray2 = [

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31396

increased by0.21%

Number of lines in readme file

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