Enumerable=function(){var n=function(n){this.GetEnumerator=n},s,u;n.Choice=function(){var t=arguments[0]instanceof Array?arguments[0]:arguments;return new n(function(){return new i(r.Blank,function(){return this.Yield(t[Math.floor(Math.random()*t.length)])},r.Blank)})};n.Cycle=function(){var t=arguments[0]instanceof Array?arguments[0]:arguments;return new n(function(){var n=0;return new i(r.Blank,function(){return n>=t.length&&(n=0),this.Yield(t[n++])},r.Blank)})};n.Empty=function(){return new n(function(){return new i(r.Blank,function(){return!1},r.Blank)})};n.From=function(e){if(e==null)return n.Empty();if(e instanceof n)return e;if(typeof e==f.Number||typeof e==f.Boolean)return n.Repeat(e,1);if(typeof e==f.String)return new n(function(){var n=0;return new i(r.Blank,function(){return n<e.length?this.Yield(e.charAt(n++)):!1},r.Blank)});if(typeof e!=f.Function){if(typeof e.length==f.Number)return new u(e);if(!(e instanceof Object)&&t.IsIEnumerable(e))return new n(function(){var 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i(function(){e=u.GetEnumerator()},function(){for(;;){if(f!=null){if(f.MoveNext())return this.Yield(f.Current());f=null}if(e.MoveNext())if(e.Current()instanceof Array){t.Dispose(f);f=n.From(e.Current()).SelectMany(r.Identity).Flatten().GetEnumerator();continue}else return this.Yield(e.Current());return!1}},function(){try{t.Dispose(e)}finally{t.Dispose(f)}})})},Pairwise:function(r){var u=this;return r=t.CreateLambda(r),new n(function(){var n;return new i(function(){n=u.GetEnumerator();n.MoveNext()},function(){var t=n.Current();return n.MoveNext()?this.Yield(r(t,n.Current())):!1},function(){t.Dispose(n)})})},Scan:function(r,u,f){var e,o;return f!=null?this.Scan(r,u).Select(f):(u==null?(u=t.CreateLambda(r),e=!1):(u=t.CreateLambda(u),e=!0),o=this,new n(function(){var n,f,s=!0;return new i(function(){n=o.GetEnumerator()},function(){if(s){if(s=!1,e)return this.Yield(f=r);if(n.MoveNext())return this.Yield(f=n.Current())}return 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f,u;r=t.CreateLambda(r);f=this.GetEnumerator();try{u=n.From(i).GetEnumerator();try{while(f.MoveNext())if(!u.MoveNext()||r(f.Current())!==r(u.Current()))return!1;return u.MoveNext()?!1:!0}finally{t.Dispose(u)}}finally{t.Dispose(f)}},Union:function(r,u){u=t.CreateLambda(u);var f=this;return new n(function(){var s,e,o;return new i(function(){s=f.GetEnumerator();o=new h(u)},function(){var t;if(e===undefined){while(s.MoveNext())if(t=s.Current(),!o.Contains(t))return o.Add(t),this.Yield(t);e=n.From(r).GetEnumerator()}while(e.MoveNext())if(t=e.Current(),!o.Contains(t))return o.Add(t),this.Yield(t);return!1},function(){try{t.Dispose(s)}finally{t.Dispose(e)}})})},OrderBy:function(n){return new e(this,n,!1)},OrderByDescending:function(n){return new e(this,n,!0)},Reverse:function(){var t=this;return new n(function(){var n,u;return new i(function(){n=t.ToArray();u=n.length},function(){return u>0?this.Yield(n[--u]):!1},r.Blank)})},Shuffle:function(){var t=this;return new n(function(){var n;return 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new i(function(){n=u.GetEnumerator()},function(){while(!f)if(n.MoveNext()){if(!r(n.Current(),e++))return f=!0,this.Yield(n.Current());continue}else return!1;return n.MoveNext()?this.Yield(n.Current()):!1},function(){t.Dispose(n)})})},Take:function(r){var u=this;return new n(function(){var n,f=0;return new i(function(){n=u.GetEnumerator()},function(){return f++<r&&n.MoveNext()?this.Yield(n.Current()):!1},function(){t.Dispose(n)})})},TakeWhile:function(r){r=t.CreateLambda(r);var u=this;return new n(function(){var n,f=0;return new i(function(){n=u.GetEnumerator()},function(){return n.MoveNext()&&r(n.Current(),f++)?this.Yield(n.Current()):!1},function(){t.Dispose(n)})})},TakeExceptLast:function(r){r==null&&(r=1);var u=this;return new n(function(){if(r<=0)return u.GetEnumerator();var n,f=[];return new i(function(){n=u.GetEnumerator()},function(){while(n.MoveNext()){if(f.length==r)return 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this.ForEach(function(t){r[n(t)]=i(t)}),r},ToDictionary:function(n,i,r){n=t.CreateLambda(n);i=t.CreateLambda(i);r=t.CreateLambda(r);var u=new h(r);return this.ForEach(function(t){u.Add(n(t),i(t))}),u},ToJSON:function(n,t){return JSON.stringify(this.ToArray(),n,t)},ToString:function(n,t){return n==null&&(n=""),t==null&&(t=r.Identity),this.Select(t).ToArray().join(n)},Do:function(r){var u=this;return r=t.CreateLambda(r),new n(function(){var n,f=0;return new i(function(){n=u.GetEnumerator()},function(){return n.MoveNext()?(r(n.Current(),f++),this.Yield(n.Current())):!1},function(){t.Dispose(n)})})},ForEach:function(n){n=t.CreateLambda(n);var r=0,i=this.GetEnumerator();try{while(i.MoveNext())if(n(i.Current(),r++)===!1)break}finally{t.Dispose(i)}},Write:function(n,i){n==null&&(n="");i=t.CreateLambda(i);var r=!0;this.ForEach(function(t){r?r=!1:document.write(n);document.write(i(t))})},WriteLine:function(n){n=t.CreateLambda(n);this.ForEach(function(t){document.write(n(t));document.write("<br 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