Pine Script：strategy.entry 函数的唯一 ID

Question

我想为 PineScript 的 strategy.entry 函数生成唯一 ID：

unique_id = tostring(bar_index)
strategy.entry(unique_id, ...)

这里的问题是 strategy.entry 只接受const string类型的 ID 参数，而我尝试的任何解决方案都给出了series[string]或string 。 有什么办法让它工作吗？

先感谢您！

Answer 1

id = "Two candle reversal " + tostring(time("") / 100000)

Answer 2

也许是这样的：

strategy("Unique_Id")

whprng(Seed) => // Wichmann–Hill Pseudo-Random Number Generator
    var germinate = Seed * hlc3 * timenow
    float s1 = na, s1 := 171.0 * nz(s1[1], germinate) % 30269.0
    float s2 = na, s2 := 172.0 * nz(s2[1], s1 * Seed) % 30307.0
    float s3 = na, s3 := 170.0 * nz(s3[1], s2 * Seed) % 30323.0
    (s1 / 30269.0 + s2 / 30307.0 + s3 / 30323.0) % 1.0

idLength = 5
rndIndex = 0
alpha = array.from('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9','0')

isUnique = false
rstring = ""
while isUnique == false
    rstring := ""
    isUnique := true
    for i = 0 to idLength
        rndIndex := math.floor(whprng(23+i) * array.size(alpha))
        rstring := rstring + array.get(alpha, rndIndex)
        alert("Routine 1")
        
    entryId = ''

    // check open orders for uniqueness
    for tradeNo = 0 to strategy.opentrades - 1
        entryId := strategy.opentrades.entry_id(tradeNo)
        if(entryId == rstring)
            isUnique := false
            break

    // check closed orders for uniqueness
    if(isUnique == true)
        for tradeNo = 0 to strategy.closedtrades - 1
            entryId := strategy.closedtrades.entry_id(tradeNo)
            if(entryId == rstring)
                isUnique := false
                break
// end while

alert("Unique ID = " + rstring)
const someId = rstring