summaryrefslogtreecommitdiff
path: root/14-the-scala-standard-library.md
diff options
context:
space:
mode:
authorAdriaan Moors <adriaan.moors@typesafe.com>2014-03-26 21:40:02 -0700
committerAdriaan Moors <adriaan.moors@typesafe.com>2014-03-26 21:40:48 -0700
commit71c1716ae4f16a05825695a33d480ac194c5ae09 (patch)
tree9f6002559be84e32fa3a983f3bbf5dbab199aae5 /14-the-scala-standard-library.md
parentabd0895322985dd4a590f3dd96a488f4e4ff87bf (diff)
downloadscala-71c1716ae4f16a05825695a33d480ac194c5ae09.tar.gz
scala-71c1716ae4f16a05825695a33d480ac194c5ae09.tar.bz2
scala-71c1716ae4f16a05825695a33d480ac194c5ae09.zip
Add language to code blocks. Shorter Example title.
Diffstat (limited to '14-the-scala-standard-library.md')
-rw-r--r--14-the-scala-standard-library.md40
1 files changed, 19 insertions, 21 deletions
diff --git a/14-the-scala-standard-library.md b/14-the-scala-standard-library.md
index db68edd32f..d0d06c25b2 100644
--- a/14-the-scala-standard-library.md
+++ b/14-the-scala-standard-library.md
@@ -40,7 +40,7 @@ class for objects).
The signatures of these root classes are described by the following
definitions.
-```
+```scala
package scala
/** The universal root class */
abstract class Any {
@@ -87,12 +87,11 @@ class AnyRef extends Any {
def synchronized[T](body: => T): T // execute `body` in while locking `this`.
}
-```
-
+```scala
The type test `$x$.isInstanceOf[$T$]` is equivalent to a typed
pattern match
-```
+```scala
$x$ match {
case _: $T'$ => true
case _ => false
@@ -131,7 +130,7 @@ Subrange types, as well as `Int` and `Long` are called _integer types_, whereas
Numeric value types are ranked in the following partial order:
-```
+```scala
Byte - Short
\
Int - Long - Float - Double
@@ -215,7 +214,7 @@ type. If this is true, it will perform the `==` operation which
is appropriate for that type. That is, the `equals` method of a
numeric value type can be thought of being defined as follows:
-```
+```scala
def equals(other: Any): Boolean = other match {
case that: Byte => this == that
case that: Short => this == that
@@ -235,11 +234,11 @@ for type `Int` and for all subrange types.
The `toString` method displays its receiver as an integer or
floating point number.
-### Example:
+### Example
This is the signature of the numeric value type `Int`:
-```
+```scala
package scala
abstract sealed class Int extends AnyVal {
def == (that: Double): Boolean // double equality
@@ -292,7 +291,7 @@ Class `Boolean` has only two values: `true` and
`false`. It implements operations as given in the following
class definition.
-```
+```scala
package scala
abstract sealed class Boolean extends AnyVal {
def && (p: => Boolean): Boolean = // boolean and
@@ -347,7 +346,7 @@ class of the underlying host system (and may be identified with
it). For Scala clients the class is taken to support in each case a
method
-```
+```scala
def + (that: Any): String
```
@@ -359,7 +358,7 @@ right operand.
Scala defines tuple classes `Tuple$n$` for $n = 2 , \ldots , 22$.
These are defined as follows.
-```
+```scala
package scala
case class Tuple$n$[+T_1, ..., +T_n](_1: T_1, ..., _$n$: T_$n$) {
def toString = "(" ++ _1 ++ "," ++ $\ldots$ ++ "," ++ _$n$ ++ ")"
@@ -375,7 +374,7 @@ as an alias for `Tuple3`.
Scala defines function classes `Function$n$` for $n = 1 , \ldots , 22$.
These are defined as follows.
-```
+```scala
package scala
trait Function$n$[-T_1, ..., -T_$n$, +R] {
def apply(x_1: T_1, ..., x_$n$: T_$n$): R
@@ -386,7 +385,7 @@ trait Function$n$[-T_1, ..., -T_$n$, +R] {
The `PartialFunction` subclass of `Function1` represents functions that (indirectly) specify their domain.
Use the `isDefined` method to query whether the partial function is defined for a given input (i.e., whether the input is part of the function's domain).
-```
+```scala
class PartialFunction[-A, +B] extends Function1[A, B] {
def isDefinedAt(x: A): Boolean
}
@@ -401,7 +400,7 @@ All operations on arrays desugar to the corresponding operations of the
underlying platform. Therefore, the following class definition is given for
informational purposes only:
-```
+```scala
final class Array[T](_length: Int)
extends java.io.Serializable with java.lang.Cloneable {
def length: Int = $\ldots$
@@ -463,7 +462,7 @@ However, it is possible to cast an expression of type
`Array[String]` to `Array[Object]`, and this
cast will succeed without raising a `ClassCastException`. Example:
-```
+```scala
val xs = new Array[String](2)
// val ys: Array[Object] = xs // **** error: incompatible types
val ys: Array[Object] = xs.asInstanceOf[Array[Object]] // OK
@@ -478,7 +477,7 @@ following implementation of method `mkArray`, which creates
an array of an arbitrary type $T$, given a sequence of $T$`s which
defines its elements:
-```
+```scala
import reflect.ClassTag
def mkArray[T : ClassTag](elems: Seq[T]): Array[T] = {
val result = new Array[T](elems.length)
@@ -505,7 +504,7 @@ instantiation of single- and multi-dimensional arrays, an extractor method
[`unapplySeq`](10-pattern-matching.html#extractor-patterns) which enables pattern matching
over arrays and additional utility methods:
-```
+```scala
package scala
object Array {
/** copies array elements from `src` to `dest`. */
@@ -558,7 +557,7 @@ object Array {
## Class Node
-```
+```scala
package scala.xml
trait Node {
@@ -637,7 +636,7 @@ for Scala programs. It is always implicitly imported, so that all its
defined members are available without qualification. Its definition
for the JVM environment conforms to the following signature:
-```
+```scala
package scala
object Predef {
@@ -714,8 +713,7 @@ object Predef {
```
-```
-
+```scala
// tupling ---------------------------------------------------------
type Pair[+A, +B] = Tuple2[A, B]