Is there a logical explanation for this?
1.to_s+“1” => “11”
1.to_s+ “1” => “11”
1.to_s + “1” => “11”
1.to_s +“1” => test.rb:2: undefined method `+@’ for “1”:String
(NoMethodError)
bogdan
Is there a logical explanation for this?
1.to_s+“1” => “11”
1.to_s+ “1” => “11”
1.to_s + “1” => “11”
1.to_s +“1” => test.rb:2: undefined method `+@’ for “1”:String
(NoMethodError)
bogdan
Bogdan I. wrote:
Is there a logical explanation for this?
1.to_s+“1” => “11”
1.to_s+ “1” => “11”
1.to_s + “1” => “11”
1.to_s +“1” => test.rb:2: undefined method `+@’ for “1”:String
(NoMethodError)
i think the + operator can not be applied to a string. only to a number.
what are you trying to do?
you can do
a = +1
but a = +“1” makes no sense to me
Nothing really, I ommited typing a space and that resulted into an
exception
which eventually I tracked down to that.
Bogdan I. wrote:
Is there a logical explanation for this?
1.to_s+“1” => “11”
1.to_s+ “1” => “11”
1.to_s + “1” => “11”
1.to_s +“1” => test.rb:2: undefined method `+@’ for “1”:String
(NoMethodError)
When a and b are both strings. Then
a + b means: Call method ‘+’ (binary plus) in string a and give b as
parameter
a +b means: Call method ‘+@’ (unary plus) on string b which doesn’t
exist
+1 is the positive number 1, -1 is the negative number -1, but what
should +“some string” mean? So it is not defined.
Jochen Topf [email protected] http://www.remote.org/jochen/
+49-721-388298
Thanks, I got it.
bogdan
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