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to_d 

        # String.to_d

(from ruby core)
---
    str.to_d  -> bigdecimal

---

Returns the result of interpreting leading characters in `str` as a
BigDecimal.

    require 'bigdecimal'
    require 'bigdecimal/util'

    "0.5".to_d             # => 0.5e0
    "123.45e1".to_d        # => 0.12345e4
    "45.67 degrees".to_d   # => 0.4567e2

See also BigDecimal::new.

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