koala

Immutable and Lazy loading Golang library to deal with slices

koala never changes your collections

Installation

 
  go get github.com/MehmetEminKaymaz/koala
 
 

Documentation

koala.Add

It adds items to the source , also it is variadic function.

list = list.Add(24)//add 24 to the source in one task or

list = list.Add(24,25,26,27) //add 24,25,26 and 27 to the source in one task

koala.Where

It returns data according to a given condition

list=list.Where(func(x interface{}) bool { 
     return x.(int)>=10
    })

koala.Foreach

list=list.Foreach(func(x interface{}) (y interface{}) {
      y=x.(int)*x.(int)
      return
    })

koala.Contains

It returns a boolean value , if exist true else false

list=list.Contains(1) 
//or
list = list.Contains(2,3,4,5,6)//variadic function
//you can also pass a slice

koala.SwapTask

It swaps task before execution

list=list.Add(24)
list=list.Add(25)
//so output should be [24,25]

//but

list = list.SwapTask(0,1) // it swaps Add(24) and Add(25) so output should be [25,24]

koala.Do

Tasks can not be execute before calling Do , so do function executes all task.

list=list.Add(24)
list=list.Add(25)

list = list.SwapTask(0,1) 

result = list.Do().Value() // result = [25,24]

koala.Value

It returns the result

koala.Cancel

It deletes task before execute

list=list.Add(24)
list=list.Add(25)

list = list.SwapTask(0,1) 

list=list.Cancel(2) // SwapTask is cancelled

//so output [24,25]

koala.LazyCancel

It deletes task in execution

koala.ClearTasks

It clear all tasks before execution

koala.Lenght

It returns lenght of the source //source must be slice or array

koala.Reverse

It reverse the source

koala.RemoveAt

Remove item from source using index

koala.ElementAt

Get element from source using index

koala.Skip

Skip items in source

koala.Take

Take N item from source

Example

 a:=[]int{1,2,3,4,5,6}


    list,err:=koala.From(a)
    check(err)
    list=list.Add(10) //add item
    list=list.Add(11,12,13,14)//its also variadic function
    list=list.Where(func(x interface{}) bool {
     return x.(int)>=10
    })
    list=list.Reverse()

    list=list.Add(1000)

    list=list.Cancel(1)//it cancels the last task immediately ( list.Add(1000) )

    list=list.SwapTasks(0,1) // swaps list.Add(10) and list.Add(11,12,13,14)

    list=list.Foreach(func(x interface{}) (y interface{}) {
      y=x.(int)*x.(int)
      return
    })

    list=list.Contains(a)

    //list=list.Contains(100,196)

    list=list.Do() // calls all tasks

    fmt.Println(list.Value())