Pine 脚本/外部数据替代方案

更新时间：2023-12-04 22:46:16

这是一种方法.
我已经包含了两种方法:

Here's a way to do it.
I've included 2 methods:

f_fill_array_all_tickers()

看起来更干净
可能会更慢.

看起来不太干净
可能会更快，具体取决于代码在列表中的位置.

该脚本有一个输入复选框 i_fill_array_all_tickers 可让您在 2 种方法之间进行选择.

The script has an input checkbox i_fill_array_all_tickers to let you choose between the 2 methods.

由于可读性/可维护性，我个人会选择 f_fill_array_all_tickers().

I'd personally go for f_fill_array_all_tickers() because of readability/maintainability.

//@version=4
study("Lines", "LI", true)

var bool        i_fill_array_all_tickers    = input(false, "Fill array with ALL tickers")

var string[]    a_ticker    = array.new_string()
var int[]       a_x1        = array.new_int()
var int[]       a_x2        = array.new_int()

var line        myLine      = line.new(na, na, na, na, extend=extend.both)

f_add(_ticker, _x1, _x2) =>
    if array.includes(a_ticker, _ticker)
        // update existing ticker
        idx = array.indexof(a_ticker, _ticker)
        array.set(a_x1, idx, _x1)
        array.set(a_x2, idx, _x2)
    else
        // insert new ticker
        array.push(a_ticker,    _ticker)
        array.push(a_x1,        _x1)
        array.push(a_x2,        _x2)


f_fill_array_all_tickers() =>
    //fill array with data for ALL tickers
    f_add("AAPL", 20, 6)
    f_add("MSFT", 20, 6)
    f_add("OPEN", 20, 6)
    f_add("SPY" , 20, 6)
    
f_fill_array_current_ticker_only() =>
    //fill array with data for only the CURRENT tickers
    if      syminfo.ticker == "AAPL" 
        f_add(syminfo.ticker, 20, 6)
    else if syminfo.ticker == "MSFT"
        f_add(syminfo.ticker, 20, 6)
    else if syminfo.ticker == "OPEN"
        f_add(syminfo.ticker, 20, 6)
    else if syminfo.ticker == "MSFT"
        f_add(syminfo.ticker, 20, 6)

f_fill_array() =>
    if i_fill_array_all_tickers
        f_fill_array_all_tickers()
    else
        f_fill_array_current_ticker_only()
        
if barstate.isfirst
    f_fill_array() 

if barstate.islast and array.includes(a_ticker, syminfo.ticker)
    idx = array.indexof(a_ticker, syminfo.ticker)
    x1  = array.get(a_x1, idx)
    x2  = array.get(a_x2, idx)
    line.set_xy1(myLine, bar_index - x1, high[x1])
    line.set_xy2(myLine, bar_index - x2, high)

最小化代码

//@version=4
study("Lines", "LI", true)

var a_ticker = array.new_string()
var a_x1 = array.new_int()
var a_x2 = array.new_int()
var myLine = line.new(na, na, na, na, extend=extend.both)

ai(a,v) => array.includes(a,v)
ax(a,v) => array.indexof(a,v)
as(a,i,v) => array.set(a,i,v)
ag(a,i) => array.get(a,i)
ap(a,v) => array.push(a,v)

f(t,a,b) =>
    if ai(a_ticker,t)
        i = ax(a_ticker,t),as(a_x1,i,a),as(a_x2,i,b) 
    else 
        ap(a_ticker,t),ap(a_x1,a),ap(a_x2,b)

a() => f("AAPL",20,6),f("MSFT",20,6),f("OPEN",20,6),f("SPY",20,6)
    
if barstate.isfirst
    a() 

if barstate.islast and ai(a_ticker, syminfo.ticker)
    idx = ax(a_ticker, syminfo.ticker)
    x1  = ag(a_x1, idx)
    x2  = ag(a_x2, idx)
    line.set_xy1(myLine, bar_index - x1, high[x1])
    line.set_xy2(myLine, bar_index - x2, high)

这似乎有效，10 行，每行 100 个元素

This seems to work, with 10 lines of 100 elements each

//@version=4
study("Lines", "LI", true)

var a_ticker = array.new_string()
var a_x1 = array.new_int()
var a_x2 = array.new_int()
var myLine = line.new(na, na, na, na, extend=extend.both)

ai(a,v) => array.includes(a,v)
ax(a,v) => array.indexof(a,v)
as(a,i,v) => array.set(a,i,v)
ag(a,i) => array.get(a,i)
ap(a,v) => array.push(a,v)

f(t,a,b) =>
    if ai(a_ticker,t)
        i = ax(a_ticker,t),as(a_x1,i,a),as(a_x2,i,b) 
    else 
        ap(a_ticker,t),ap(a_x1,a),ap(a_x2,b)

a() => 
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),
    f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6),f("AAPL",20,6)

if barstate.isfirst
    a()
    
if barstate.islast and ai(a_ticker, syminfo.ticker)
    idx = ax(a_ticker, syminfo.ticker)
    x1  = ag(a_x1, idx)
    x2  = ag(a_x2, idx)
    line.set_xy1(myLine, bar_index - x1, high[x1])
    line.set_xy2(myLine, bar_index - x2, high)

小改进.
当在最后一个柱上调用 a() 而不是 barstate.isfirst 时，运行时不必将所有历史柱上的数组保存在内存中.

Little improvement.
When calling a() on the last bar instead of barstate.isfirst, the runtime doesn't have to keep the arrays in memory on all the historical bars.

if barstate.islast
    a()
    if ai(a_ticker, syminfo.ticker)
        idx = ax(a_ticker, syminfo.ticker)
        x1  = ag(a_x1, idx)
        x2  = ag(a_x2, idx)
        line.set_xy1(myLine, bar_index - x1, high[x1])
        line.set_xy2(myLine, bar_index - x2, high)

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