Ruby

tim@nexgate.com wrote:

I have the following code. In a nutshell i am slicing a string to pull out strings to use as keys in a hash. However when running the following code, I am getting odd results.
context = "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ"

The smart quote (’) character in context seems to have something to do
with it failing to match. Using a normal single quote ('), everything
works as expected.

Other than that, I'm puzzled, too. All strings show up as
Encoding::UTF-8 on my system.

This issue is due to the different result of String#hash of each string.

Why slice_url.hash != str.hash in splite of slice_url == str ?

And I found the root cause is slice_url.ascii_only? != str.ascii_only?

C:\work>irb irb(main):001:0> context = "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" => "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" irb(main):002:0> slice_url = context.slice(105,24) => "http://cnnmon.ie/1kcFZSQ" irb(main):003:0> str = "http://cnnmon.ie/1kcFZSQ" => "http://cnnmon.ie/1kcFZSQ" irb(main):004:0> slice_url.hash => 1022346954 irb(main):005:0> str.hash => 1022346949 irb(main):006:0> slice_url.ascii_only? => false irb(main):007:0> str.ascii_only? => true