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Published 18 days ago • verified publisherblok21.com
SDKDartFlutter
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Lightweight library for dealing with physical quantities, units, and conversions.

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0.7.0 #

  • Breaking: Quantity and Unit hash codes are now consistent with equality, as required by Object.hashCode. Equal quantities expressed in different units (1 m and 1000 mm) previously hashed differently, so a Set or Map kept both
  • Breaking: Quantity comparison is now performed in SI base units rather than by converting one operand to the units of the other, which previously made equality asymmetric for ~7% of unit conversions
  • Breaking: Quantity.operator == now returns false for mismatched dimensions rather than throwing, as List.contains and other collection operations rely on it. compareTo and the ordering operators still throw
  • Breaking: a scalar Quantity is no longer equal to the num it represents. num could not return the same in reverse, and the comparison was reported as unrelated_type_equality_checks at every call site. Scalar's ordering operators still accept a num
  • Breaking: QuantityPoint hash codes now follow its existing equality, which compares the distance from absolute zero regardless of units and origin
  • Added QuantityPoint string functions, showing the origin where the unit does not imply it
  • Added OffsetUnit, a unit measured from a Unit.implicitOrigin; degreeCelsius and degreeFahrenheit are now offset units
  • Added QuantityOrigin equality, isZero and toString
  • Fixed the names of degreeCelsius, which had none, and the plural of kelvin

0.6.2 #

  • Added AreaPerTime and AnglePerTime quantities

0.6.1 #

  • Add fixed precision functions Quantity.toPrecision and Quantity.toFixedAsStringNoTrailing

0.6.0 #

  • Renamed systems to units
  • Moved scalar units to units/scalar.dart
  • Quantity.scaled() now accepts a num as well as a Quantity

0.5.1 #

  • Fixed prefixed unit scaling 2c393b1
  • Reorganized examples

0.5.0 #

  • Various improvements.

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Lightweight library for dealing with physical quantities, units, and conversions.

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MIT (license)

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