首页 \ 问答 \ 使用正则表达式更新文本文件(Using regex to update a text file)

使用正则表达式更新文本文件(Using regex to update a text file)

我在Mac上,刚刚开始学习使用正则表达式。 我在纯文本文件中保留了很多注释,并且这些注释中包含了主题标签(例如,#tag)。 我试图找出如何运行正则表达式来查找我的纯文本文件集合中的所有不同主题标签,并将列表输出到文本文件,然后我可以将其用作我的笔记的目录。

从这里阅读答案,我很确定正则表达式是使用正确的技术来尝试使这项工作,但我缺乏技术词汇来理解可能为我的用例重新组织的类似问题。

我真的很感激被指向正确的方向,一旦我理解了我想要问的问题,我就不怕为自己做一些工作。


I'm on a mac and have just started to learn about using regex. I keep a lot of notes in plain text files, and these have hashtags in them (e.g., #tag ). I'm trying to figure out how I can run a regex to find all the different hashtags in my collection of plain text files, and output the list to a text file that I can then use as a directory for my notes.

From reading answers here I'm fairly sure that regex is the right technology to be using to try to make this work, but I lack the technical vocabulary to make sense of similar questions that might be retooled for my usecase.

I really appreciate being pointed in the right direction, and I'm not afraid of doing some work for myself once I understand the questions I'm trying to ask.


原文:https://stackoverflow.com/questions/24089625
更新时间:2022-10-28 14:10

最满意答案

你需要什么,应该开箱即用。 我创建了一个plunker ,显示了你的需求。 有这三种样本状态

$stateProvider
    .state('home', {
        url: '/home',
        template: '<div>home</div>',
      })
    .state('search', {
        url: '/search',
        template: '<div>search</div>',
      })
    .state('index', {
        url: '/index',
        template: '<div>index</div>',
      })

这个(与问题相同)条件DISABLES从HOME导航到SEARCH:

$rootScope.$on('$stateChangeStart',
   function(event, toState  , toParams
                   , fromState, fromParams) 
    {
      var isFromHome = fromState.name =='home' ;
      var isToSearch = toState.name == 'search';
      if(isFromHome && isToSearch)
      {
        event.preventDefault();
      }
    });

在这里查看


What you require, should be working out of the box. I created a plunker, showing your requirement in action. There are these three sample states

$stateProvider
    .state('home', {
        url: '/home',
        template: '<div>home</div>',
      })
    .state('search', {
        url: '/search',
        template: '<div>search</div>',
      })
    .state('index', {
        url: '/index',
        template: '<div>index</div>',
      })

And this (the same as in question) condition DISABLES navigation from HOME to SEARCH:

$rootScope.$on('$stateChangeStart',
   function(event, toState  , toParams
                   , fromState, fromParams) 
    {
      var isFromHome = fromState.name =='home' ;
      var isToSearch = toState.name == 'search';
      if(isFromHome && isToSearch)
      {
        event.preventDefault();
      }
    });

Check it here

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