From: Robert Klemme Date: 2013-06-24T05:03:00+09:00 Subject: Re: Error in xoring elements --089e0141a95e4fae3e04dfd7c8b5 Content-Type: text/plain; charset=ISO-8859-1 On Sun, Jun 23, 2013 at 9:45 PM, buzz k. wrote: > Hey guys, > I am having an issue in working on ruby arrays. > Firstly suppose i have a = [1,2,3] and b [4,5,6] and c=[] > Did you mean b = [4,5,6] > i get an error for this code:- > for i in 0..2 > c[i] = a[i]*b[i] > end > > saying []= cant be applied to fixnum > Certainly not irb(main):006:0> a = [1,2,3] => [1, 2, 3] irb(main):007:0> b = [4,5,6] => [4, 5, 6] irb(main):008:0> c = [] => [] irb(main):009:0> for i in 0..2; c[i] = a[i] * b[i] end => 0..2 irb(main):010:0> c => [4, 10, 18] Btw, you can also do irb(main):012:0> c = a.zip(b).map {|x,y| x * y} => [4, 10, 18] Anyways ultimately i solved this error using the << operator > However now i am getting an error :undefined method `^' for [1]:Array > when i apply > for i in 0..2 > c << a[i] ^ b[i] > end > i.e. i am trying to xor values of two arrays and store in a third array > Why the issue and if there is anyway of solving with the first method > itself > Precedence irb(main):013:0> c << a[1] ^ b[1] NoMethodError: undefined method `^' for [4, 10, 18, 2]:Array from (irb):13 from /usr/bin/irb:12:in `
' irb(main):014:0> c << (a[1] ^ b[1]) => [4, 10, 18, 2, 7] Cheers robert -- remember.guy do |as, often| as.you_can - without end http://blog.rubybestpractices.com/ --089e0141a95e4fae3e04dfd7c8b5 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable



On Sun, Jun 23, 2013 at 9:45 PM, buzz k. <lists@ruby-forum.com<= /a>> wrote:
Hey guys,
I am having an issue in working on ruby arrays.
Firstly suppose i have a =3D [1,2,3] and b [4,5,6] and c=3D[]

Did you mean

b =3D [4,5,6]<= /div>
=A0
i get an error for this code:-
for i in 0..2
c[i] =3D a[i]*b[i]
end

saying []=3D cant be applied to fixnum

= Certainly not

irb(main):006:0> a =3D [1,2,3]
=3D> [1, 2, 3]
irb(main):007:0> b =3D [4,5,6]
=
=3D> [4, 5, 6]
irb(main):008:0> c =3D []
=3D> = []
irb(main):009:0> for i in 0..2; c[i] =3D a[i] * b[i] end
=3D> 0..2
irb(main):010:0> c
=3D> [4, = 10, 18]

=A0Btw, you can also do

i= rb(main):012:0> c =3D a.zip(b).map {|x,y| x * y}
=3D> [4, 1= 0, 18]

Anyways ultimately i solved this error using the << operator
However now i am getting an error :undefined method `^' for [1]:Array when i apply
for i in 0..2
c << a[i] ^ b[i]
end
i.e. i am trying to xor values of two arrays and store in a third array
Why the issue and if there is anyway of solving with the first method
itself

Precedenc= e

irb(main):013:0> c << a[1] ^ b[1]
NoMethodError: undefined method `^' for [4, 10, 18, 2]:Array
=A0 =A0 =A0 =A0 from (irb):13
=A0 =A0 =A0 =A0 from /usr/bin/irb:12:in `<main>'
irb(main):014:0> c << (a[1] ^ b[1])
=3D> [4, 10, 18, 2, 7]

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