小编Joh*_*ins的帖子

我正在致力于在 Purescript 中构建一个加密套利机器人，主要是为了了解函数式编程范例。作为一名 JS 程序员，我发现 Purescript 的错误消息非常难以解释。目前，在尝试使用 Affjax 库发出 http 请求时，我遇到了“TypesDoNotUnify”错误。我的代码如下所示：

import Affjax.ResponseFormat (ResponseFormat(..))\nimport Affjax.ResponseFormat as ResponseFormat\nimport Data.Argonaut.Core (Json, fromString, stringify)\nimport Data.Either (Either(..))\nimport Data.HTTP.Method (Method(..))\nimport Effect (Effect)\nimport Effect.Aff (Aff, launchAff_)\nimport Effect.Console (log)\nimport Node.Express.App (App, listenHttp, get)\nimport Node.Express.Response (send)\nimport Node.HTTP (Server)\nimport Node.HTTP.Client (method)\n\nmakeQuoteRequest :: String -> String -> String -> String\nmakeQuoteRequest fromAddress toAddress amount = "https://api.1inch.exchange/v3.0/137/quote?fromTokenAddress=" <> fromAddress <> "&toTokenAddress=" <> toAddress <> "&amount=" <> amount\n\nsendQuoteRequest :: Either Error Unit\nsendQuoteRequest = launchAff_ do\n  result <- AX.request(AX.defaultRequest {\n       url = makeQuoteRequest …