hi all
is there in ruby a method like in_array() php function?
i need to verify if there is a string in an array
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Alle 09:35, mercoledì 24 gennaio 2007, Giuseppe Milo ha scritto:
hi all
is there in ruby a method like in_array() php function?i need to verify if there is a string in an array
I don't know php, so I don't know what in_array() exactly does. At any rate,
the method include? of the Array class tells whether a given element is in
the array:
a=['a', 'b', 'c']
a.include?('a')
=>true
a.include?('d')
=>false
This method uses the == method of the argument to test for equality. If you
need something different, you can use the grep method, which uses === and
returns an array containing the matches (useful, for instance, for regular
expressions), find, which takes a block and returns the first element for
which the block returns true, or any? which works like find but returns a
boolean value indicating whether there was a match:
a=['abc','def']
a.include?('a')
=>false
a.grep(/a/)
=>['abc']
a=[1,2,3]
a.find{|i| i>1}
=>2
a.any?{|i| i>1}
=>true
I hope this helps
array.include? string
ri Array#include?
--------------------------------------------------------- Array#include?
array.include?(obj) -> true or false
···
On 1/24/07, Giuseppe Milo <josh@pixael.com> wrote:
hi all
is there in ruby a method like in_array() php function?i need to verify if there is a string in an array
------------------------------------------------------------------------
Returns +true+ if the given object is present in _self_ (that is,
if any object +==+ _anObject_), +false+ otherwise.
a = [ "a", "b", "c" ]
a.include?("b") #=> true
a.include?("z") #=> false
martin
