Match string from possible strings

Ruby
1

Hi,

Ive looked about and found some ways to do this but there must be a 1
line quick way in ruby using regular expressions or something.

Basically i have a string “Test” and i want to see if it matches 3
constants that i have defined. If it does then i want to go route a,
and if it doesnt i want to go route b, so:

If “Test” (matches either of the following) string1, string2, string3
route a
else
route b
end

Anyone know the quick way?

JB

2

John B. wrote:

Hi,
If “Test” (matches either of the following) string1, string2, string3
route a
else
route b
end

Anyone know the quick way?

JB

if [string1, string2, string3].include?(‘Test’)

3

Hi

On Fri, 11 Apr 2008 19:05:47 +0900, John B.
[email protected]
wrote:

route a
else
route b
end

Anyone know the quick way?

This looks like a potential Ruby Q. challenge.

Kristian
4

If “Test” (matches either of the following) string1, string2, string3

Does “match” mean “is equal” or “match a regexp”?

If it is “is equal”

  • use include?
  • use case

if it means regexp matching

  • use […].grep.empty? for no match
  • build a single regexp to match all 3 constants and use =~
  • …
5

Hi,
----- Original Message -----
From: “John B.” [email protected]
Newsgroups: comp.lang.ruby
To: “ruby-talk ML” [email protected]
Sent: Friday, April 11, 2008 7:05 PM
Subject: Match string from possible strings

route a
else
route b
end

Anyone know the quick way?

JB

Is this what you want?

if [string1,string2,string3].include?(“Test”)
…

Regards,
Park H.

6

Park H. wrote:

Hi,
----- Original Message -----
From: “John B.” [email protected]
Newsgroups: comp.lang.ruby
To: “ruby-talk ML” [email protected]
Sent: Friday, April 11, 2008 7:05 PM
Subject: Match string from possible strings

route a
else
route b
end

Anyone know the quick way?

JB

Is this what you want?

if [string1,string2,string3].include?(“Test”)
…

Regards,
Park H.

Yes,

This is what i have used,

thanks

JB

7

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[email protected]

8

John B. wrote:

route a
else
route b
end

Anyone know the quick way?

JB

What’s wrong with

if string1 == “Test” || string2 == “Test” || string3 == “Test”

9

Also, using the facets gem you can turn “include?” around using “in?”,
which might have a more intuitive feel.

require ‘facets’

a = “Test”
arr = %w(Test Toast Tryst)
arrgh = %w(Toast Tryst)
a.in? arr
=>true
a.in? arrgh
=>false

I saw a presentation on facets @ the Hartford rug a few weeks ago and I
thoroughly enjoy this gem now.