Added unit prefixes.

1 files changed, 28 insertions, 1 deletions

diff --git a/src/org/unitConverter/newUnits/LinearUnit.java b/src/org/unitConverter/newUnits/LinearUnit.java
index 5a589b7..7600dad 100644
--- a/src/org/unitConverter/newUnits/LinearUnit.java
+++ b/src/org/unitConverter/newUnits/LinearUnit.java
@@ -29,6 +29,21 @@ import org.unitConverter.math.ObjectProduct;
  */
 public final class LinearUnit extends AbstractUnit {
 	/**
+	 * Gets a {@code LinearUnit} from a unit and a value. For example, converts '59 °F' to a linear unit with the value
+	 * of '288.15 K'
+	 * 
+	 * @param unit
+	 *            unit to convert
+	 * @param value
+	 *            value to convert
+	 * @return value expressed as a {@code LinearUnit}
+	 * @since 2019-10-16
+	 */
+	public static LinearUnit fromValue(final Unit unit, final double value) {
+		return new LinearUnit(unit.getBase(), unit.convertToBase(value));
+	}
+
+	/**
 	 * Gets a {@code LinearUnit} from a unit base and a conversion factor. In other words, gets the product of
 	 * {@code unitBase} and {@code conversionFactor}, expressed as a {@code LinearUnit}.
 	 * 
@@ -129,7 +144,7 @@ public final class LinearUnit extends AbstractUnit {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(this.getBase(), this.getConversionFactor());
+		return 31 * this.getBase().hashCode() + DecimalComparison.hash(this.getConversionFactor());
 	}
 
 	/**
@@ -258,4 +273,16 @@ public final class LinearUnit extends AbstractUnit {
 		return Double.toString(this.conversionFactor) + " * " + this.getBase().toString(BaseUnit::getSymbol);
 	}
 
+	/**
+	 * Returns the result of applying {@code prefix} to this unit.
+	 * 
+	 * @param prefix
+	 *            prefix to apply
+	 * @return unit with prefix
+	 * @since 2019-03-18
+	 * @since v0.2.0
+	 */
+	public LinearUnit withPrefix(final UnitPrefix prefix) {
+		return this.times(prefix.getMultiplier());
+	}
 }