liveBook · Manning

Succ

As explained in The Well-Grounded Rubyist, Fourth Edition

succ is a Ruby String method that returns the next string according to Ruby's alphanumeric successor rules.

Ruby's String#succ returns the next string according to alphanumeric successor rules; next is an equivalent method name. The ordering favors intuitive progression over strict character-code order: after "z" comes "aa", and incrementation continues odometer-style. section 8.1.5

Incrementing strings

"a".succ # => "b" "abc".succ # => "abd" "azz".succ # => "baa" This behavior is useful for batch-generating unique strings, such as filenames. section 8.1.5

>> "a".succ
=> "b"
>> "abc".succ
=> "abd"
>> "azz".succ
=> "baa"

Compare ordinary increments with carry-like transitions across the string. section 8.1.5

How The Well-Grounded Rubyist, Fourth Edition covers it

How deep it goes
Defines the method, alias, ordering rationale, and odometer-style behavior through three compact examples.
Examples
Uses "a" to "b", "abc" to "abd", and "azz" to "baa" as progression examples.
What you can do after
Apply it via Ruby's String API to advance alphanumeric string sequences.
How it connects
Connects String transformation with Ruby strings, alphanumeric ordering, and batch-generated unique filenames.
Cover of The Well-Grounded Rubyist, Fourth Edition
liveBookmanning.com
Read The Well-Grounded Rubyist, Fourth Edition on liveBook Get the book at manning.com

This explainer was generated by Manning's knowledge graph from the text of The Well-Grounded Rubyist, Fourth Edition. The section links point to the parts of the book it draws on.