JarCastingscala-range
Install
libraryDependencies += "com.github.andyglow" %% "scalax-range" % Version
Use
import scalax.range._
// numeric
for { x <- inclusive(1) to 10 by 1 } println(x)
(exclusive(1) to 10 by 1) foreach println
(inclusive(0.0) until 1.0 by 0.1) foreach println
// date
import scalax.range.date._
import scala.concurrent.duration.FiniteDuration
import java.time.{Duration => JDuration}
for { d <- inclusive(new java.util.Date(0)) to new java.util.Date(100) by 1 } println(x)
for { d <- inclusive(new java.util.Date(0)) to new java.util.Date(1000000) by 1.second } println(x)
for { d <- inclusive(new java.util.Date(0)) to new java.util.Date(1000000) by JDuration.ofSeconds(1) } println(x)
Introduction
This simple dsl tries to overcome limitation of a standard scala.collection.immutable.Range which is implemented for only Int.
By using scala-range you may leverage the same approach with extended amount of types.
Supported types
All types which has Numeric type-class implemented
ByteCharShortIntLongFloatDoubleBigIntBigDecimalFor iterating through range of numeric types you need use the same type to specify a step. So Int is the only possible way to traverse through the range of ints, Double for doubles and so on.
For Date related types the step may be defined as java.time.Duration or scala.concurrent.duration.FiniteDuration.
Standard Date & Time related types
java.util.Datejava.time.Instantjava.time.LocalDatejava.time.LocalTimejava.time.LocalDateTimejava.time.OffsetDateTimejava.time.ZonedDateTime
JodaTime
JodaTime Date & Time related types
org.joda.time.Instantorg.joda.time.LocalDateorg.joda.time.LocalTimeorg.joda.time.DateTime
In order to add joda time support please add additional dependency:
libraryDependencies += "com.github.andyglow" %% "scalax-range-joda-time" % Version
Also additional import line will be required:
import scalax.range.jodatime._
This will also make you able to use org.joda.time.Duration as a step definition.
Numerics to define a Step in Date based Ranges
There is also a way to use numeric types to define a step. The way it will be treated is different for different types used to define a range. Basically the numeric will get converted into Long and then this long gets treated uniquely.
java.util.Date(num is seconds)java.time.Instant(num is seconds)java.time.LocalDate(num is days)java.time.LocalTime(num is minutes)java.time.LocalDateTime(num is hours)java.time.OffsetDateTime(num is hours)java.time.ZonedDateTime(num is hours)org.joda.time.Instant(num is seconds)org.joda.time.LocalDate(num is days)org.joda.time.LocalTime(num is minutes)org.joda.time.DateTime(num is hours)
TODO: