从pine中的字符串数组中提取字符串值 [英] Extracting string value from a string array in pine

问题描述

我想制定一种策略，我需要掌握给定指数(例如DAX 30)的所有股票的价格.

I want to build a strategy for which I need to have the values of all stocks of a given index, let's say the DAX 30.

我正在构建一个包含30个值的字符串数组，每个值都是DAX股票的股票名称，例如:

I'm building a string array with 30 values, each value being the ticker name of a DAX stock, e.g.:

var dax_names = array.new_string(30)
array.set(dax_names, 0, 'VOW3')
array.set(dax_names, 1, 'ADS')
...

在循环中调用 security(array.get(dax_names，i)，'D'，close))后，编译器抱怨我向安全性发送了一系列字符串，与之相反到一个字符串.为什么array.get返回一个系列字符串?如何从数组中获取实际的字符串值?

Upon calling security(array.get(dax_names, i), 'D', close)) in a loop, the compiler complains that I'm sending a series string to security, as opposed to a string. Why does array.get return a series string? How can I get the actual string value from my array?

提前谢谢！

推荐答案

1. 您不能在 for 循环中调用 security().
2. 作为 refman状态， array.get()返回序列值.
3. 由于 refman状态， security()需要一个简单字符串" symbol 的参数，这意味着它不能为序列.

1. You can't call security() from within a for loop.
2. As the refman states, array.get() return series values.
3. As the refman states, security() require a "simple string" argument for symbol, which means it cannot be a series.

这篇关于从pine中的字符串数组中提取字符串值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！