nv-facutil-cache-cursor

• simple cache with cursor
• forward ,backword, push,pop, push_and_forward ,pop_and_backward

install

• npm install nv-facutil-cache-cursor

usage

const Cache = require("nv-facutil-cache-cursor");      

example

    var cache = new Cache(4,null)                  // new Cache(max_size,noexist_sign)
    cache
    cache.cursor_

    /*

    > cache
    Cache(0) [ max_size: 4 ,noexist:null]
    > cache.cursor_
    -1
    */


    cache.push(10)
    cache.push(20)
    cache.push(30)
    cache.push(40)
    cache
    cache.cursor_


    /*
    > cache
    Cache(4) [ 10, 20, 30, 40, max_size: 4 ,noexist:null]
    > cache.cursor_
    -1
    */

    cache.forward(2)
    cache.cursor_
    cache.curr_

    /*
    > cache
    Cache(4) [ 10, 20, 30, 40, max_size: 4 ,noexist:null]
    > cache.forward(2)
    20
    > cache.cursor_
    1
    > cache.curr_
    20
    >

    */



    cache.push_and_forward(50)

    cache
    cache.cursor_
    cache.curr_

    /*
    > cache.push_and_forward(50)
    40
    >
    > cache
    Cache(4) [ 20, 30, 40, 50, max_size: 4 ,noexist:null]
    > cache.cursor_
    2
    > cache.curr_
    40
    >

    */


    cache.pop_and_backward()
    cache
    cache.cursor_
    cache.curr_

    /*
    cache.pop_and_backward()
    30
    > cache
    Cache(3) [ 20, 30, 40, max_size: 4 ,noexist:null]
    > cache.cursor_
    1
    > cache.curr_
    30
    >

    */



    cache.prev_
    cache.pprev_
    cache.next_
    cache.nnext_




    /*

    > cache.curr_
    30
    > cache.prev_
    20
    > cache.pprev_
    null
    > cache.next_
    40
    > cache.nnext_
    null

    */

SLICE

    > c = new C(4)
    Cache(0) [ max_size: 4, noexist: undefined ]
    >
    > c.push(10)
    > c.push(20)
    > c.push(30)
    > c.push(40)
    > c.forward()
    10
    > c.forward()
    20
    > c
    Cache(4) [ 10, 20, 30, 40, max_size: 4, noexist: undefined ]
    >
    > c.cursor_
    1
    > c.slice_lt_cursor_
    Cache(1) [ 10, max_size: 1, noexist: undefined ]
    >
    > c.slice_le_cursor_
    Cache(2) [ 10, 20, max_size: 2, noexist: undefined ]
    >
    > c.slice_gt_cursor_
    Cache(2) [ 30, 40, max_size: 2, noexist: undefined ]
    >
    > c.slice_ge_cursor_
    Cache(3) [ 20, 30, 40, max_size: 3, noexist: undefined ]
    >

METHODS

    cache.b                       cache.backward                cache.can_back_max_steps_
    cache.can_forward_max_steps_  cache.clear                   cache.constructor
    cache.curr_                   cache.f                       cache.forward
    cache.fst_                    cache.is_cant_backward_one    cache.is_cant_forward_one
    cache.is_empty                cache.is_pc_at_max            cache.is_pc_at_min
    cache.lst_                    cache.max_pc_                 cache.min_pc_
    cache.next_                   cache.nnext_                  cache.pc_
    cache.pop                     cache.pop_and_backward        cache.pprev_
    cache.prev_                   cache.push                    cache.push_and_forward
    cache.safe_pop

    c.slice_ge_cursor_        
    c.slice_gt_cursor_        
    c.slice_le_cursor_        
    c.slice_lt_cursor_


    cache.length                  cache.max_size

APIS

LICENSE

• ISC