// Copyright (c) Microsoft Corporation. All rights reserved.

// This code is licensed by Microsoft Corporation under the terms

// of the MICROSOFT REACTIVE EXTENSIONS FOR JAVASCRIPT AND .NET LIBRARIES License.

// See http://go.microsoft.com/fwlink/?LinkId=186234.

(function(){var a=this;var b;if(typeof ProvideCustomRxRootObject =="undefined")b=a.Rx; else b=ProvideCustomRxRootObject();var c=undefined;var d=function(m,n){return m===n;};var e=function(m){return m;};var f=b.Observable;var g=f.prototype;var h="Sequence contains no elements.";var i=f.CreateWithDisposable;var j=Rx.Scheduler.CurrentThread;var k=function(m){if(m.length==0)throw h;return m[0];};g.Aggregate=function(m,n){return this.Scan0(m,n).Final();};g.Aggregate1=function(m){return this.Scan1(m).Final();};g.IsEmpty=function(){var m=this;return i(function(n){return m.Subscribe(function(){n.OnNext(false);n.OnCompleted();},function(o){n.OnError(o);},function(){n.OnNext(true);n.OnCompleted();});});};g.Any=function(m){if(m===c)return this.IsEmpty().Select(function(n){return !n;});return this.Where(m).Any();};g.All=function(m){if(m===c)m=e;return this.Where(function(n){return !m(n);}).IsEmpty();};g.Contains=function(m,n){if(n===c)n=d;return this.Where(function(o){return n(o,m);}).Any();};g.Count=function(){return this.Aggregate(0,function(m,n){return m+1;});};g.Sum=function(){return this.Aggregate(0,function(m,n){return m+n;});};g.Average=function(){return this.Scan({sum:0,count:0},function(m,n){return {sum:m.sum+n,count:m.count+1};}).Final().Select(function(m){return m.sum/m.count;});};g.Final=function(){var m=this;return i(function(n){var o;var p=false;return m.Subscribe(function(q){p=true;o=q;},function(q){n.OnError(q);},function(){if(!p)n.OnError(h);n.OnNext(o);n.OnCompleted();});});};var l=function(m,n,o){return i(function(p){var q=false;var r;var s=[];return m.Subscribe(function(t){var u;try{u=n(t);}catch(w){p.OnError(w);return;}var v=0;if(!q){q=true;r=u;}else try{v=o(u,r);}catch(w){p.OnError(w);return;}if(v>0){r=u;s=[];}if(v>=0)s.push(t);},function(t){p.OnError(t);},function(){p.OnNext(s);p.OnCompleted();});});};g.MinBy=function(m,n){if(m===c)m=e;var o;if(n===c)o=function(p,q){return q-p;}; else o=function(p,q){return n(p,q)*-1;};return l(this,m,o);};g.Min=function(m,n){return this.MinBy(m,n).Select(k);};g.MaxBy=function(m,n){if(m===c)m=e;if(n===c)n=function(o,p){return o-p;};return l(this,m,n);};g.Max=function(m,n){return this.MaxBy(m,n).Select(k);};})();