Problem: Array.to_s return [["..."]] in 1.9.0

[Rk Ch]

I use Array.to_s convert to string. Ruby 1.9.0 return like [["sample
string"]], but 1.8.6 return only the value.
How to resolve this problem? I really don't want to revise so many lines
of code.


Here's the sample code :

text="Source String line......."
d_lo=text.scan(/Str(.*?)g/).to_s
puts d_lo

1.8.6 return:in
1.9.0 return:[["in"]]

 

[Thomas Preymesser]

[Note: parts of this message were removed to make it a legal post.]

I use Array.to_s convert to string. Ruby 1.9.0 return like [["sample
string"]], but 1.8.6 return only the value.
How to resolve this problem? I really don't want to revise so many lines
of code.

you can define your own version of Array#to_s which emulates the behaviour
of Ruby 1.8

class Array
def to_s
...your code here...
end
end



-Thomas

 

[Gary Wright]

I use Array.to_s convert to string. Ruby 1.9.0 return like [["sample
string"]], but 1.8.6 return only the value.
How to resolve this problem? I really don't want to revise so many
lines
of code.

One option is to switch to Array#join, which also works for nested
arrays:

[1,2,3].join => "123"
[1,2,[3,4],5].join

=> "12345"

 

[Stefan Rusterholz]

I use Array.to_s convert to string. Ruby 1.9.0 return like [["sample
string"]], but 1.8.6 return only the value.
How to resolve this problem? I really don't want to revise so many lines
of code.


Here's the sample code :

text="Source String line......."
d_lo=text.scan(/Str(.*?)g/).to_s
puts d_lo

1.8.6 return:in
1.9.0 return:[["in"]]

Why do you use scan if you don't really want to scan?
text="Source String line......."
d_lo=text[/Str(.*?)g/, 1]
puts d_lo

I didn't test it on 1.9, but it should work the same.

Regards
Stefan