
/*

  SmartClient Ajax RIA system
  Version v9.0p_2021-05-01/LGPL Deployment (2021-05-01)

  Copyright 2000 and beyond Isomorphic Software, Inc. All rights reserved.
  "SmartClient" is a trademark of Isomorphic Software, Inc.

  LICENSE NOTICE
     INSTALLATION OR USE OF THIS SOFTWARE INDICATES YOUR ACCEPTANCE OF
     ISOMORPHIC SOFTWARE LICENSE TERMS. If you have received this file
     without an accompanying Isomorphic Software license file, please
     contact licensing@isomorphic.com for details. Unauthorized copying and
     use of this software is a violation of international copyright law.

  DEVELOPMENT ONLY - DO NOT DEPLOY
     This software is provided for evaluation, training, and development
     purposes only. It may include supplementary components that are not
     licensed for deployment. The separate DEPLOY package for this release
     contains SmartClient components that are licensed for deployment.

  PROPRIETARY & PROTECTED MATERIAL
     This software contains proprietary materials that are protected by
     contract and intellectual property law. You are expressly prohibited
     from attempting to reverse engineer this software or modify this
     software for human readability.

  CONTACT ISOMORPHIC
     For more information regarding license rights and restrictions, or to
     report possible license violations, please contact Isomorphic Software
     by email (licensing@isomorphic.com) or web (www.isomorphic.com).

*/
//	
//
//	Array object utilities -- not commonly used but sometimes useful stuff
//


isc.addMethods(Array.prototype, {

//>	@method		array.max() ([])
//
// 			Returns the largest number in the array, skipping non-numeric values.
//
//			If the start and/or end are given, searches the specified subset of the list.
//
//      @visibility external
//		@group	arrayMath
//		@param	[start]		(number)	optional start index (default is 0)
//		@param	[end]		(number)	optional end index (default is list.length)
//
//		@return	(number)	maximum of all items in the list, or null if all values are non-numeric	
//<
max : function (start, end) {
	if (start == null) start = 0;
	if (end == null) end = this.length;

	var max = null;
	
	for (var i = start; i < end; i++) {
		var value = this[i];
		if (isc.isA.Number(value)) {
			if (max == null) max = value;
			else max = Math.max(max, value);
		}
	}

	return max;
},

//>	@method		array.min() ([])
//          
// 			Returns the smallest number in the array, skipping non-numeric values.
//
//			If the start and/or end are given, searches the specified subset of the list.
//
//      @visibility external
//		@group	arrayMath
//		@param	[start]		(number)	optional start index (default is 0)
//		@param	[end]		(number)	optional end index (default is list.length)
//
//		@return	(number)	minimum of all items in the list, or null if all values are non-numeric	
//<
min : function (start, end) {
	if (start == null) start = 0;
	if (end == null) end = this.length;

	var min = null;
		
	for (var i = start; i < end; i++) {
		var value = this[i];
		if (isc.isA.Number(value)) {
			if (min == null) min = value;
			else min = Math.min(min, value);
		}
	}

	return min;
},

//>	@method		array.sum() ([])
// 			Returns the sum of the numbers in the array, skipping non-numeric values.
//
//			If the start and/or end are given, uses only the specified subset of the list.
//
//      @visibility external
//		@group	arrayMath
//		@param	[start]		(number)	optional start index (default is 0)
//		@param	[end]		(number)	optional end index (default is list.length)
//
//		@return	(number)	sum of all items in the list	
//<
sum : function (start, end) {
	if (start == null) start = 0;
	if (end == null) end = this.length;

	var total = 0;
		
	for(var i = start; i < end; i++)
		if(isc.isA.Number(this[i])) total += this[i];
	return total;
},

//>	@method		array.and() ([])
// Returns true if all values between the start and end indices are true.
//
//      @visibility external
//		@group	arrayMath
//		@param	[start]		(number)	optional start index (default is 0)
//		@param	[end]		(number)	optional end index (default is list.length)
//
//		@return	(boolean)		all of the items in the array are true	
//<
and : function (start, end) {
	if (start == null) start = 0;
	if (end == null) end = this.length;

	for(var i = start; i < end; i++)
		if (!this[i]) return false;
	return true;
},

//>	@method		array.or()  ([])
// Returns true if at least one value between the start and end indices is true.
//
//      @visibility external
//		@group	arrayMath
//		@param	[start]		(number)	optional start index (default is 0)
//		@param	[end]		(number)	optional end index (default is list.length)
//
//		@return	(boolean)		at least one of the items is true	
//<
or : function (start, end) {
	if (start == null) start = 0;
	if (end == null) end = this.length;

	var total = 0;
		
	for(var i = start; i < end; i++)
		if (this[i]) return true;
	return false;
}

})	//END isc.addMethods(Array.prototype)
