如何在CouchDB中编写本机Erlang列表函数 [英] How to write Native Erlang list functions in CouchDB

问题描述

我正在CouchDB中写Erlang列表函数，但是我不熟悉返回的数据类型，以及如何相应地操作它们。
我想让一些人告诉我如何将简单的Javascript List函数转换为Erlang列表函数。这将是我开始的好点。

  function（head，req）{
 var row，resp = {}，数据= []; 
 if（head）{
 resp [total_rows] = head.total_rows; 
} 
 while（row = getRow（））{
 data.push（row）; 
} 
 resp.rows = data; 
返回JSON.stringify（resp）; 
} 
  

提前谢谢

解决方案

你看过couchdb测试套件吗？
您将在utils / script / test / erlang_views.js找到erlang视图

测试套件中的代码经常帮助我，当我被卡住。

I am trying to write Erlang list functions in CouchDB, however, I am not familiar with the data types returned, and how to manipulate them accordingly. I would like some one to show me how to translate the simple Javascript List function below into an Erlang list function. That would be a good point for me to start.

function(head, req) {
var row,resp={},data=[];
  if(head){
    resp["total_rows"] = head.total_rows;   
  }  
  while(row = getRow()) {
    data.push(row);
  }
  resp.rows = data;
  return JSON.stringify(resp);
}

Thanks, in advance.

解决方案

Have you looked at the couchdb Test Suite. You'll find the erlang views at utils/script/test/erlang_views.js

The code in the test suite often helps me when I'm stuck.

这篇关于如何在CouchDB中编写本机Erlang列表函数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！