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  • License ISC

nv-array-basic ============ - nv-array-basic

Package Exports

  • nv-array-basic
  • nv-array-basic/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (nv-array-basic) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

nv-array-basic

  • nv-array-basic

install

  • npm install nv-array-basic

usage

example

const ary_bsc = require("nv-array-basic")
var arr = [10,20,30]

ary_bsc.head(arr)
//10
ary_bsc.tail(arr)
//[20,30]

ary_bsc.mid([1,2,3,4])
//[2,3]

ary_bsc.init(arr)
//[10,20]
ary_bsc.lst(arr)
//30



ary_bsc.some(arr,0,2)
//[10,30]

ary_bsc.some_not(arr,0,2)
//[20]

ary_bsc.odd(arr)
//[20]

ary_bsc.even(arr)
//[ 10, 30 ]

ary_bsc.interval([0,1,2,3,4,5,6,7],3)
//[0,3,6]
interval([0,1,2,3,4,5,6,7],0)
//[]

var narr = ary_bsc.clear(arr)
//[]
narr === arr 
// true

ary_bsc.validate_index([],0) === undefined
ary_bsc.validate_index([1,2],0) === 0
ary_bsc.validate_index([1,2],1) === 1

ary_bsc.validate_value([1,2,3],1)
//1
ary_bsc.validate_value([1,2,3],10)
//undefined

validate_vi([1,10,2,3],{i:1,v:10})
//{ i: 1, v: 10 }
validate_vi([1,10,2,3],{i:0,v:10})
//undefined


ary_bsc.bin(5)
//[ 1, 0, 1 ]
ary_bsc.bin(5,4)
//[ 0, 1, 0, 1 ]
ary_bsc.bin(5,4,false)
//[ 1, 0, 1, 0 ]
ary_bsc.bin(5,2)
//[ 1, 0 ]
ary_bsc.bin(5,2,false)
//[ 0, 1 ]

ary_bsc.eq([1,2],[1,2])
//true

var m = [
    ['a','b','c','d','e'],
    [1,1,2,1,1],
    [{a:1},{a:1},{a:2},{a:1},{a:1}]
]

> ary_bsc.combine(...m)
[
  { '0': 'a', '1': 1, '2': { a: 1 } },
  { '0': 'b', '1': 1, '2': { a: 1 } },
  { '0': 'c', '1': 2, '2': { a: 2 } },
  { '0': 'd', '1': 1, '2': { a: 1 } },
  { '0': 'e', '1': 1, '2': { a: 1 } }
]
>

ary_bsc.freq([3,1,3,3,2,3,1],3)
>4

> arr
[ undefined, <1 empty item>, 500, <2 empty items> ]
> is_hole_element_at(arr,0)
false
> is_hole_element_at(arr,1)
true
> is_hole_element_at(arr,2)
false
> is_hole_element_at(arr,3)
true
> is_hole_element_at(arr,4)
true
>


> get_nonhole_indexes(arr)
[ 0, 2 ]
>
> has_hole(arr)
true
>
> get_hole_indexes(arr)
[ 1, 3, 4 ]

> arr
[ undefined, <1 empty item>, 500, <2 empty items> ]
> fill_hole(arr)
[ undefined, undefined, 500, undefined, undefined ]
>

safe get set

> var arr = [10,11,12]
> arr[5] = 15
15
> arr[3] = undefined
undefined
> arr
[ 10, 11, 12, undefined, <1 empty item>, 15 ]
>

arr[3] === arr[4]   ////??? !!!!
true

> arr[6]
undefined
> arr.hasOwnProperty(6)
false
>
> ary_bsc.is_hole_element_at(arr,4)
true
>

> ary_bsc.safe_get(arr,6)
Symbol(noexist)
> ary_bsc.safe_get(arr,4)
Symbol(hole)
>



> var ap = ary_bsc.creat_safe_getter_proxy(arr)
> ap
Proxy [
  [ 10, 11, 12, undefined, <1 empty item>, 15 ],
  { get: [Function: get] }
]
>
> ap[0]
10
> ap[3]
undefined
> ap[4]
Symbol(hole)
> ap[5]
15
> ap[6]
Symbol(noexist)
>

ary_bsc.safe_set(arr,6,66666)
>Uncaught Error: index_not_in_range

var ap = ary_bsc.creat_safe_setter_proxy(arr)

> ap
Proxy [
  [ 10, 11, 12, undefined, <1 empty item>, 15 ],
  { set: [Function: set] }
]
> ap[6] = 66666
Uncaught Error: index_not_in_range

every

var arr = []
every(arr,(r)=>r>0,true)
> true

every(arr,(r)=>r>0,false)
> false

> [].every((r)=>r>0)
true                   //?!!!!!!
>

API

  • ary_bsc.head(arr)

  • ary_bsc.tail(arr)

  • ary_bsc.mid(arr)

  • ary_bsc.init(arr)

  • ary_bsc.lsti(arr)

  • ary_bsc.lst(arr)

  • ary_bsc.slst(arr,v)

  • ary_bsc.ibfr(arr,index,v) //insert_before

  • ary_bsc.iaft(arr,index,v) //insert_after

  • ary_bsc.rm(arr,index) //remove element at index

  • ary_bsc.some(arr,...whiches)

  • ary_bsc.some_not(arr,...whiches)

  • ary_bsc.clear(arr)

  • ary_bsc.validate_index(arr,index)

  • ary_bsc.validate_value(arr,value)

  • ary_bsc.validate_vi(arr,d) //d = {i:index,v:value}

  • ary_bsc.odd(arr)

  • ary_bsc.even(arr)

  • ary_bsc.interval(arr,interval)

  • ary_bsc.bin(n,lngth,head=true)

  • ary_bsc.eq(arr0,arr1)

  • ary_bsc.combine(...lists)

  • ary_bsc.mid_index_pair(arr)

  • ary_bsc.mid_index_left(arr)

  • ary_bsc.mid_index_right(arr)

  • ary_bsc.mid_value_pair(arr)

  • ary_bsc.mid_value_left(arr)

  • ary_bsc.mid_value_right(arr)

  • ary_bsc.to_map(arr)

  • ary_bsc.to_wmap(arr)

  • ary_bsc.cp(arr)

  • ary_bsc.is_hole_element_at(arr,index)

  • ary_bsc.get_nonhole_indexes(arr)

  • ary_bsc.get_hole_indexes(arr)

  • ary_bsc.has_hole(arr)

  • ary_bsc.fill_hole(arr,v=undefined)

  • ary_bsc.safe_get(ary,index_or_key)

  • ary_bsc.safe_set(ary,index_or_key,value)

  • ary_bsc.creat_safe_getter(ary)

  • ary_bsc.creat_safe_setter(ary)

  • ary_bsc.creat_safe_gsetter(ary)

  • ary_bsc.hole

  • ary_bsc.noexist

  • ary_foldl(f,acc,ary)

  • ary_foldr(f,ary,acc)

  • ary_every(ary,f,empty_as=true)

LICENSE

  • ISC