Extensions & utilities for Scala 2.13.
- Clone repository
git clone -b s2.13 https://github.com/xmaples/commons-util.git
#or git clone -b s2.13 https://gitee.com/xmaples/commons-util.git- Build & install to maven local(& private remote) repository
cd commons-util
mvn install # installing to local repository
#mvn deploy # installing to local & private remote repository if configured private remote repo- Add dependency into your
pom.xml
<dependency>
<groupId>com.github.xmaples.commons</groupId>
<artifactId>commons-util_2.13</artifactId>
<version>LATEST</version>
</dependency>- Tuples.
:+/append(),+:/prepend(),++,reverse,head,last,init,tail,::,:::,length.
import scalax.TupleOps._
val t2: (Int,Int) = (1,2)
val t3a: (Int,Int,String) = t2 :+ "x3"
assert(t3a == (1,2,"x3"))
assert(t3a.last == "x3")
assert(t3a.init == t2)
val t3p: (String,Int,Int) = "x0" +: t2
assert(t3p == ("x0",1,2))
assert(t3p.head == "x0")
assert(t3p.tail == t2)
val pp:(Int,Int,String,String) = t2 ++ ("x3","x4")
assert(pp==(1,2,"x3","x4"))
assert((1,2).:::(("x3","x4")) == ("x3","x4",1,2))
assert(("x3","x4").length == 2)
assert((1,"x2").reverse==("x2",1))- Homogeneous Tuples.
map,foreach,apply,toArray/toList,exists,forall,reduce,fold,find.
import scalax.TupleOps._
val ht2:(String,String)=("x1","x2")
assert(ht2.map(_.length)==(2,2))
assert(ht2(0)=="x1" && ht2(1)=="x2")
assert(ht2.toList == List("x1","x2"))
assert(ht2.forall(_.startsWith("x")))
assert(ht2.exists(_.endsWith("2")))
val ht2i:(Int,Int,Int)=(2,3,5)
assert(ht2i.sum == 10)
assert(ht2i.reduce((v1,v2)=>v1*v2)==30)- Tuples Flattening.
flatten.
import scalax.TupleOps._
val a:(Tuple2[Int,String],Tuple3[String,Int,Int]) = ((1,"x2"),("x3",4,5))
val b:Tuple5[Int,String,String,Int,Int] = a.flatten
assert(b == (1,"x2","x3",4,5))- Seq/Array.
argmax,argmin,argmaxOption,argminOption,argmaxBy,argminBy,argmaxByOption,argminByOption.
import scalax.collection.CollectionOps._
assert(Array(8,7,7,9,9).argmin == 1)
assert(List(8,7,7,9,9).argmin == 1)
assert(List(8,7,7,9,9).argmax == 3)
assert(List.empty[Int].argmaxOption == None)
assert(List("bb","","ccc").argmaxBy(_.length)==2)
assert(List("bb","","ccc").argminBy(_.length)==1)