a= zeros(8) #fill!( a, atan(1)) fill!( a,261) println( a) b= sqrt(sum(a.*a)) println( b) s = Set( [ 2, 4, "Ahmed", 8, 10, "Cairo"]) s2=Set( [ 1,8, "Maupassant",5, "Cairo"]) println(s2, s) s4 = symdiff(s2,s) println( s4) d = Dict(:"ba"=>1981, :"na"=>1982, :"mo"=>1985, :"ne"=>1987) println(values(d)) for ( k,v) in d println(k,v) end array =[ k for k in values( d)] array2 = collect( keys( d)) println(array2) c=collect( 1:0.5:6) println( c)