Module: CompositeUnitMeasurements

Defined in:

lib/composite_unit_measurements/version.rb,
lib/composite_unit_measurements/base.rb,
lib/composite_unit_measurements/time.rb,
lib/composite_unit_measurements/length.rb,
lib/composite_unit_measurements/volume.rb,
lib/composite_unit_measurements/weight.rb

Overview

Note:

This module serves as a namespace for classes and utilities related to composite unit measurements. To parse such measurements, refer to individual classes like Length, Weight, Time, etc. within this module.

This module provides parsers and utilities for handling composite unit measurements. It allows parsing and manipulation of various composite measurements for units of length, weight, time etc.

Examples:

CompositeUnitMeasurements::Length.parse("5 feet 12 inches")
=> 6.0 ft

CompositeUnitMeasurements::Weight.parse("8 lb 12 oz")
=> 8.75 lb

CompositeUnitMeasurements::Time.parse("3 h 45 min")
=> 3.75 h

Author:

• Harshal V. Ladhe

Since:

• 0.1.0

Defined Under Namespace

Classes: Length, Time, Volume, Weight

Constant Summary

REAL_NUMBER =

Matches real numbers in the form of 31, +72, or -12.

/
  (?:                   # Start of non-capturing group
    [+-]?               # Optional plus (+) or minus (-) sign
    \d+                 # One or more digits
  )                     # End of non-capturing group
/x.freeze

RATIONAL_NUMBER =

Matches a rational number in the form of a/b (fractional) or a b/c (mixed fractional).

/
  (?:                   # Start of optional non-capturing group
    [+-]?               # Optional plus (+) or minus (-) sign
    \d+                 # One or more digits
    \s+                 # One or more whitespace
  )?                    # End of optional non-capturing group
  (                     # Start of capturing group for the fraction
    (\d+)               # Capture the numerator (one or more digits)
    \/                  # Match the forward slash, indicating division
    (\d+)               # Capture the denominator (one or more digits)
  )                     # End of capturing group for the fraction
/x.freeze

SCIENTIFIC_NUMBER =

Matches a scientific number in various formats like 1.23E+4 or -5.67e-8.

/
  (?:                   # Start of non-capturing group
    [+-]?               # Optional plus (+) or minus (-) sign
    \d*                 # Zero or more digits (integer part)
    \.?                 # Optional decimal point
    \d+                 # One or more digits (fractional part)
    (?:                 # Start of non-capturing group for exponent part
      [Ee]              # Match 'E' or 'e' for exponentiation
      [+-]?             # Optional plus (+) or minus (-) sign for exponent
      \d+               # One or more digits (exponent value)
    )?                  # End of non-capturing group of exponent part (optional)
  )                     # End of non-capturing group
/x.freeze

COMPLEX_NUMBER =

Matches complex numbers in the form of a+bi, where both ‘a’ and ‘b’ can be in scientific notation. It captures the real and imaginary parts.

/
  #{SCIENTIFIC_NUMBER}  # Pattern for scientific number
  #{SCIENTIFIC_NUMBER}  # Pattern for scientific number
  i                     # Match the letter 'i' (the imaginary unit)
/x.freeze

ANY_NUMBER =

Matches any number, including scientific, complex, rational, and real numbers.

/(?<number>#{SCIENTIFIC_NUMBER}|#{COMPLEX_NUMBER}|#{RATIONAL_NUMBER}|#{REAL_NUMBER})/.freeze

VERSION =

Current stable version

Since:

• 0.1.0

"0.5.0"