trait ScalaNumericAnyConversions extends Any
Conversions which present a consistent conversion interface across all the numeric types, suitable for use in value classes.
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Abstract Value Members
- abstract def byteValue(): Byte
- abstract def doubleValue(): Double
- abstract def floatValue(): Float
- abstract def intValue(): Int
-
abstract
def
isWhole(): Boolean
- returns
true
if this number has no decimal component,false
otherwise.
- abstract def longValue(): Long
- abstract def shortValue(): Short
- abstract def underlying(): Any
Concrete Value Members
-
def
isValidByte: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Byte MinValue and MaxValue; otherwise returnsfalse
. -
def
isValidChar: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Char MinValue and MaxValue; otherwise returnsfalse
. -
def
isValidInt: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Int MinValue and MaxValue; otherwise returnsfalse
. -
def
isValidShort: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Short MinValue and MaxValue; otherwise returnsfalse
. -
def
toByte: Byte
Returns the value of this as a scala.Byte.
Returns the value of this as a scala.Byte. This may involve rounding or truncation.
-
def
toChar: Char
Returns the value of this as a scala.Char.
Returns the value of this as a scala.Char. This may involve rounding or truncation.
-
def
toDouble: Double
Returns the value of this as a scala.Double.
Returns the value of this as a scala.Double. This may involve rounding or truncation.
-
def
toFloat: Float
Returns the value of this as a scala.Float.
Returns the value of this as a scala.Float. This may involve rounding or truncation.
-
def
toInt: Int
Returns the value of this as an scala.Int.
Returns the value of this as an scala.Int. This may involve rounding or truncation.
-
def
toLong: Long
Returns the value of this as a scala.Long.
Returns the value of this as a scala.Long. This may involve rounding or truncation.
-
def
toShort: Short
Returns the value of this as a scala.Short.
Returns the value of this as a scala.Short. This may involve rounding or truncation.
This is the documentation for the Scala standard library.
Package structure
The scala package contains core types like
Int
,Float
,Array
orOption
which are accessible in all Scala compilation units without explicit qualification or imports.Notable packages include:
scala.collection
and its sub-packages contain Scala's collections frameworkscala.collection.immutable
- Immutable, sequential data-structures such asVector
,List
,Range
,HashMap
orHashSet
scala.collection.mutable
- Mutable, sequential data-structures such asArrayBuffer
,StringBuilder
,HashMap
orHashSet
scala.collection.concurrent
- Mutable, concurrent data-structures such asTrieMap
scala.collection.parallel.immutable
- Immutable, parallel data-structures such asParVector
,ParRange
,ParHashMap
orParHashSet
scala.collection.parallel.mutable
- Mutable, parallel data-structures such asParArray
,ParHashMap
,ParTrieMap
orParHashSet
scala.concurrent
- Primitives for concurrent programming such asFutures
andPromises
scala.io
- Input and output operationsscala.math
- Basic math functions and additional numeric types likeBigInt
andBigDecimal
scala.sys
- Interaction with other processes and the operating systemscala.util.matching
- Regular expressionsOther packages exist. See the complete list on the right.
Additional parts of the standard library are shipped as separate libraries. These include:
scala.reflect
- Scala's reflection API (scala-reflect.jar)scala.xml
- XML parsing, manipulation, and serialization (scala-xml.jar)scala.swing
- A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)scala.util.parsing
- Parser combinators, including an example implementation of a JSON parser (scala-parser-combinators.jar)Automatic imports
Identifiers in the scala package and the
scala.Predef
object are always in scope by default.Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example,
List
is an alias forscala.collection.immutable.List
.Other aliases refer to classes provided by the underlying platform. For example, on the JVM,
String
is an alias forjava.lang.String
.