Scala NumericRange类代码示例

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本文整理汇总了Scala中scala.collection.immutable.NumericRange类的典型用法代码示例。如果您正苦于以下问题：Scala NumericRange类的具体用法？Scala NumericRange怎么用？Scala NumericRange使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了NumericRange类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Scala代码示例。

示例1: genericEncoder

//设置package包名称以及导入依赖的类
package io.gustavoamigo.quill.pgsql.encoding.range.numeric

import java.sql.{Types, PreparedStatement}

import io.getquill.source.jdbc.JdbcSource

import scala.collection.immutable.NumericRange

trait Encoders {
  this: JdbcSource[_, _] =>

  private def genericEncoder[T](valueToString: (T => String)): Encoder[T] = {
    new Encoder[T] {
      override def apply(index: Int, value: T, row: PreparedStatement) = {
        val sqlLiteral = valueToString(value)
        row.setObject(index + 1, sqlLiteral, Types.OTHER)
        row
      }
    }
  }

  private def tuple[T](t: (T, T)) = s"[${t._1}, ${t._2}]"

  private def range[T](r: NumericRange[T]) = s"[${r.head}, ${r.last}]"

  implicit val intTupleEncoder: Encoder[(Int, Int)] = genericEncoder(tuple)
  implicit val intRangeEncoder: Encoder[NumericRange[Int]] = genericEncoder(range)
  implicit val bigIntTupleEncoder: Encoder[(BigInt, BigInt)] = genericEncoder(tuple)
  implicit val bigIntRangeEncoder: Encoder[NumericRange[BigInt]] = genericEncoder(range)
  implicit val longTupleEncoder: Encoder[(Long, Long)] = genericEncoder(tuple)
  implicit val longRangeEncoder: Encoder[NumericRange[Long]] = genericEncoder(range)
  implicit val doubleTupleEncoder: Encoder[(Double, Double)] = genericEncoder(tuple)
  implicit val bigDecimalTupleEncoder: Encoder[(BigDecimal, BigDecimal)] = genericEncoder(tuple)
  implicit val bigDecimalRangeEncoder: Encoder[NumericRange[BigDecimal]] = genericEncoder(range)
}

开发者ID:gustavoamigo，项目名称:quill-pgsql，代码行数:36，代码来源:Encoders.scala

示例2: Polynomial

//设置package包名称以及导入依赖的类
package io.github.typeness.graphiccalculator

import scala.collection.immutable.NumericRange

case class Polynomial(coefficients: Map[Int, Double]) {
  val degree: Int = if (coefficients.keys.nonEmpty) coefficients.keys.max else 0

  def call(x: Double): Double = {
    coefficients.map {
      case (d, coef) => Math.pow(x, d) * coef
    }.sum
  }

  def getPointsInRange(domain: NumericRange[Double]): Map[Double, Double] = domain.map(x => (x, call(x))).toMap
}

object Polynomial {
  def fromMonomials(list: List[Monomial]): Polynomial = {
    val coefficientsMap = list
      .groupBy(_.degree)
      .map {
        case (degree, monomials) => (degree, monomials.map(_.coefficient).sum)
      }
    Polynomial(coefficientsMap)
  }
}

开发者ID:typeness，项目名称:graphic-calculator，代码行数:27，代码来源:Polynomial.scala

示例3: decoder

//设置package包名称以及导入依赖的类
package io.gustavoamigo.quill.pgsql.encoding.range.numeric

import io.getquill.source.jdbc.JdbcSource
import io.gustavoamigo.quill.pgsql.encoding.GenericDecoder

import scala.collection.immutable.NumericRange

trait Decoders extends GenericDecoder {
  this: JdbcSource[_, _] =>

  private val rangePattern = """\[(\d+\.*\d*),(\d+\.*\d*)[\]|)]""".r

  private def decoder[T](transform: (String, String) => T) = decode(s =>
    rangePattern.findFirstMatchIn(s) match {
      case Some(m) => transform(m.group(1), m.group(2))
    }
  )

  implicit val intTupleDecoder: Decoder[(Int, Int)] = decoder((s1, s2) => (s1.toInt, s2.toInt - 1))
  implicit val intRangeDecoder: Decoder[NumericRange[Int]] = decoder((s1, s2) => Range.Int(s1.toInt, s2.toInt, 1))
  implicit val bigIntTupleDecoder: Decoder[(BigInt, BigInt)] = decoder((s1, s2) => (BigInt(s1), BigInt(s2) - BigInt(1)))
  implicit val bigIntRangeDecoder: Decoder[NumericRange[BigInt]] =
    decoder((s1, s2) => Range.BigInt(BigInt(s1), BigInt(s2), BigInt(1)))
  implicit val longTupleDecoder: Decoder[(Long, Long)] = decoder((s1, s2) => (s1.toLong, s2.toLong - 1))
  implicit val longRangeDecoder: Decoder[NumericRange[Long]] = decoder((s1, s2) => Range.Long(s1.toLong, s2.toLong, 1))
  implicit val doubleTupleDecoder: Decoder[(Double, Double)] = decoder((s1, s2) => (s1.toDouble, s2.toDouble))
  implicit val bigDecimalTupleDecoder: Decoder[(BigDecimal, BigDecimal)] = decoder((s1, s2) => (BigDecimal(s1), BigDecimal(s2)))
  implicit val bigDecimalRangeDecoder: Decoder[NumericRange[BigDecimal]] = decoder((s1, s2) => {
    val (d1, d2) = (BigDecimal(s1), BigDecimal(s2))
    Range.BigDecimal.inclusive(d1, d2, step(d1, d2))
  })

  private def step(d1: BigDecimal, d2: BigDecimal): BigDecimal = {
    val fraction1 = d1.remainder(BigDecimal(1)).toString.length
    val fraction2 = d2.remainder(BigDecimal(1)).toString.length

    val fraction = if (fraction1 > fraction2) d1 else d2
    BigDecimal(1) / BigDecimal(10).pow(fraction.precision - 1)
  }
}

开发者ID:gustavoamigo，项目名称:quill-pgsql，代码行数:41，代码来源:Decoders.scala

注：本文中的scala.collection.immutable.NumericRange类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。