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first?

first?()

Instance Public methods

first? is a predicate to test the call is a first call to first? with current group.

It is useful to format comma separated values as:

q.group(1, '[', ']') {
  xxx.each {|yyy|
    unless q.first?
      q.text ','
      q.breakable
    end
    ... pretty printing yyy ...
  }
}

first? is obsoleted in 1.8.2.

Links:

https://github.com/ruby/ruby/blob/642458fd77476ac3a364a914ab02097014c8f6b8/lib/prettyprint.rb#L118

doc_ruby_on_rails

2025-01-10 15:47:30

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