Added 'splice' function to the string object

Docs/Types/String.md

@@ -399,6 +399,34 @@ Strips the String of its *<script>* tags and anything in between them.
 
 
 
+String method: splice {#String:splice}
+--------------------------------------
+
+Similar to the [array.splice][], inserts a string before the specified position and removes unnecessary elements.
+
+### Syntax:
+
+	myString.splice(position, remove, insert);
+
+### Arguments:
+
+1. position - (*integer*) The position before which the insertion is made.
+1. remove - (*integer*) Length of the text to be removed.
+1. insert - (*string*) String to insert.
+
+### Returns:
+
+* (*string*) Modified string.
+
+### Examples:
+
+	'Hello, big world!'.splice(6, 4, ''); // returns 'Hello, world!'
+	'Add here'.splice(3, 0, ' substring'); // returns 'Add substring here'
+	'Replace this word'.splice(8, 4, 'that'); // returns 'Replace that word'
+	'You can count from an end'.splice(-6, 2, 'the'); // returns 'You can count from the end'
+
+
+
 [MDN String]: https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/String
 [MDN String:contains]: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/String/contains
 [MDN String:indexOf]: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/String/indexOf
@@ -411,3 +439,4 @@ Strips the String of its *<script>* tags and anything in between them.
 [String:trim]: #String:trim
 [Array:rgbToHex]: /core/Types/Array/#Array:rgbToHex
 [String:trim]: #String:trim
+[array.splice]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice

Source/Types/String.js

@@ -79,6 +79,10 @@ String.implement({
 			if (match.charAt(0) == '\\') return match.slice(1);
 			return (object[name] != null) ? object[name] : '';
 		});
+	},
+
+	splice: function(pos, rem, ins) {
+		return (this.slice(0,pos) + ins + this.slice(pos + Math.abs(rem)));
 	}
 
 });

Specs/Types/String.js

@@ -141,4 +141,13 @@ describe("String Methods", function(){
 		expect('this {should {break} mo} betta'.substitute({ 'break':'work' })).toEqual('this {should work mo} betta');
 	});
 
+	// String.splice
+
+	it('should add substrings and remove characters next to added', function () {
+		expect('Hello, big world!'.splice(6, 4, '')).toEqual('Hello, world!');
+		expect('Add here'.splice(3, 0, ' substring')).toEqual('Add substring here');
+		expect('Replace this word'.splice(8, 4, 'that')).toEqual('Replace that word');
+		expect('You can count from an end'.splice(-6, 2, 'the')).toEqual('You can count from the end');
+	});
+
 });