CODEWITHSUNDEEP
ruby-on-railsrubystring
corybantic
corybantic

Reputation: 105

How can I get a part of a string from a starting point to the end of the string using Ruby

The title isn't that clear, but I wasn't sure how to phrase it. In Ruby, 

a = "somestring"
a[1] #Becomes 'o'
a[1..4] #Becomes 'omes'

This selects a desired portion from a string. I was wondering how I should make it so that it selects parts of a string from a fixed starting number to the end of the string, no matter how long it is.

So:

a[3 All the way to the end] should become 'estring'

I could do a[1..10000] but that feels extremely redundant.

Upvotes: 1

Views: 156

Answers (1)

Zoran
Zoran

Reputation: 4226

You can use -1 to specify the end of your range - this would point to the last character of a string, no matter the length:

a = "This is a string"
a[2..-1]
#=> "is is a string"

This same approach can be applied to get the second to last character -2, third to last character -3, etc.

Hope it helps!

Upvotes: 2

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