feature: Adds volume dry units

Author: NeedleInAJayStack

Sources/Units/Registry.swift

@@ -324,17 +324,21 @@ internal class Registry {
         DefaultUnits.deciliter,
         DefaultUnits.kiloliter,
         DefaultUnits.megaliter,
-        DefaultUnits.bushel,
         DefaultUnits.teaspoon,
         DefaultUnits.tablespoon,
         DefaultUnits.fluidOunce,
         DefaultUnits.cup,
         DefaultUnits.pint,
         DefaultUnits.gallon,
+        DefaultUnits.dryPint,
+        DefaultUnits.dryQuart,
+        DefaultUnits.peck,
+        DefaultUnits.bushel,
         DefaultUnits.imperialFluidOunce,
         DefaultUnits.imperialCup,
         DefaultUnits.imperialPint,
         DefaultUnits.imperialGallon,
+        DefaultUnits.imperialPeck,
         DefaultUnits.metricCup,
     ]
 }

Sources/Units/Unit/DefaultUnits.swift

@@ -1029,12 +1029,30 @@ enum DefaultUnits {
         dimension: [.Length: 3],
         coefficient: 0.003785411784
     )
-    // Dry measures
+    // Dry measures: https://en.wikipedia.org/wiki/Dry_measure
+    static let dryPint: DefinedUnit = try! DefinedUnit(
+        name: "dryPint",
+        symbol: "drypt",
+        dimension: [.Length: 3],
+        coefficient: 5.506104713575e-4
+    )
+    static let dryQuart: DefinedUnit = try! DefinedUnit(
+        name: "dryQuart",
+        symbol: "dryqt",
+        dimension: [.Length: 3],
+        coefficient: 1.101220942715e-3
+    )
+    static let peck: DefinedUnit = try! DefinedUnit(
+        name: "peck",
+        symbol: "pk",
+        dimension: [.Length: 3],
+        coefficient: 8.80976754172e-3
+    )
     static let bushel = try! DefinedUnit(
         name: "bushel",
-        symbol: "bushel",
+        symbol: "bu",
         dimension: [.Length: 3],
-        coefficient: 0.03523907
+        coefficient: 0.035239070167
     )
     // Imperial measures
     static let imperialFluidOunce = try! DefinedUnit(
@@ -1067,6 +1085,12 @@ enum DefaultUnits {
         dimension: [.Length: 3],
         coefficient: 0.00454609
     )
+    static let imperialPeck: DefinedUnit = try! DefinedUnit(
+        name: "imperialPeck",
+        symbol: "ipk",
+        dimension: [.Length: 3],
+        coefficient: 9.09218e-3
+    )
     static let metricCup = try! DefinedUnit(
         name: "metricCup",
         symbol: "mcup",

Sources/Units/Unit/Unit+DefaultUnits.swift

@@ -233,18 +233,22 @@ public extension Unit {
     static let deciliter = Unit(definedBy: DefaultUnits.deciliter)
     static let kiloliter = Unit(definedBy: DefaultUnits.kiloliter)
     static let megaliter = Unit(definedBy: DefaultUnits.megaliter)
-    static let bushel = Unit(definedBy: DefaultUnits.bushel)
     static let teaspoon = Unit(definedBy: DefaultUnits.teaspoon)
     static let tablespoon = Unit(definedBy: DefaultUnits.tablespoon)
     static let fluidOunce = Unit(definedBy: DefaultUnits.fluidOunce)
     static let cup = Unit(definedBy: DefaultUnits.cup)
     static let pint = Unit(definedBy: DefaultUnits.pint)
     static let quart = Unit(definedBy: DefaultUnits.quart)
     static let gallon = Unit(definedBy: DefaultUnits.gallon)
+    static let dryPint = Unit(definedBy: DefaultUnits.dryPint)
+    static let dryQuart = Unit(definedBy: DefaultUnits.dryQuart)
+    static let peck = Unit(definedBy: DefaultUnits.peck)
+    static let bushel = Unit(definedBy: DefaultUnits.bushel)
     static let imperialFluidOunce = Unit(definedBy: DefaultUnits.imperialFluidOunce)
     static let imperialCup = Unit(definedBy: DefaultUnits.imperialCup)
     static let imperialPint = Unit(definedBy: DefaultUnits.imperialPint)
     static let imperialQuart = Unit(definedBy: DefaultUnits.imperialQuart)
     static let imperialGallon = Unit(definedBy: DefaultUnits.imperialGallon)
+    static let imperialPeck = Unit(definedBy: DefaultUnits.imperialPeck)
     static let metricCup = Unit(definedBy: DefaultUnits.metricCup)
 }