[Compose] Isomorphisms and round trip data transformations

What is Isomorphisms?We have a value x, then apply function 'to' and 'from' to value 'x', the result we should still get 'x'.// from(to(x)) == x// to(
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[Ramda] Declaratively Map Data Transformations to Object Properties Using Ramda evolve

We don't always control the data we need in our applications, and that means we often find ourselves massaging and transforming our data. In this less
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Displaying Data in a Chart with ASP.NET Web Pages (Razor)

This article explains how to use a chart to display data in an ASP.NET Web Pages (Razor) website by using the Chart helper.What you'll learn:How to di
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为什么上传文件的表单里面要加一个属性enctype=multipart/form-data?

首先知道enctype这个属性管理的是表单的MIME编码。共有三个值可选:1、application/x-www-form-urlencoded2、multipart/form-data3、text/plain其中application/x-www-form-urlencoded是默认值,作用是设置
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JQuery.Ajax()的data参数类型

$('#submit').click(function(){ $('#form').serialize(); //会根据input里面的name,把数据序列化成字符串;eg:name=yang $('#form').serializeArray(); //会根据inp
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[D3] Load and Inspect Data with D3 v4

You probably use a framework or standalone library to load data into your apps, but what if that’s overkill for your needs? What if you’re
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[Vue] Preload Data using Promises with Vue.js and Nuxt.js

Nuxt.js allows you to return a Promise from your data function so that you can asynchronously resolve data before displaying the p
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DataFrame入门案例(集团公司对人事信息处理场景)

   我用一个集团公司对人事信息处理场景的简单案例,来作为入门,详细分析DataFrame上的各种常用操作,包括集团子公司的职工人事信息的合并,职工的部门相关信息查询、职工信息的统计、关联职工与部门信息的统计,以及如何将各种统计得到的结果存储到外部存储系统等。  在此入门案例里,涉及的Da
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DataFrame编程模型初谈与Spark SQL

   Spark SQL在Spark内核基础上提供了对结构化数据的处理,在Spark1.3版本中,Spark SQL不仅可以作为分布式的SQL查询引擎,还引入了新的DataFrame编程模型。  在Spark1.3版本中,Spark SQL不再是Alpha版本,除了提供更好的SQL标准兼容
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[D3] Create Labels from Non-numeric Data with Ordinal Scales in D3 v4

When your data contains discrete, non-numeric property values that you need to format or convert before displaying, d3.scaleOrdinal() is the
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