关于javascript:2020年末记随笔

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每个公司都青睐精通多种编程语言并且多才多艺的程序员。一个既能很麻利地写脚本，也能编写简单的 Java 程序的程序员，的确相当有价值。所以实际上，对于高级开发者来说，学习不止一种编程语言，简直就是必然的要求。

目前而言，面试官越来越看重那些领有多种编程语言教训的工程师。比方，同时有 C ++ 和 Java 的教训就很不错，Python 和 Java 也是。我集体喜爱那些在 C ++ 或者 Java 方面有着丰盛教训，而且能用 Groovy、Perl 或 Python 写脚本的软件工程师。

很多时候，写一个小脚本就足以疾速搞定一些专有工作。我不想我的程序员们花上一整天用 Java 去写一个读取 CSV 文件的程序，或者在 TCP/UDP 端口抓取信息的程序，这是很浪费时间的一件事件。

为什么我在文章中抉择上面 5 种语言呢？简略理论。我是基于这些语言的用处、编程范式和风行度及代表性来抉择的。

例如，如果你想找一份利用开发的工作，就不能漠视 Java。同样，做与 web 相干的事件，就得晓得无处不在的 JavaScript。

在开发者职业生涯的晚期，我强烈建议学习 C 语言。它能帮忙开发者贴近零碎底层，通晓那些编程的要害概念，这是暗藏在 JVM 或 CLR 底下的货色。

对于脚本语言，我的抉择是 Python，只管你也可用 Perl 或 Groovy 代替。但在扩大反对方面来看，Python 的体现无疑是最棒的。有很多 Python 模块可供选择，帮你能分分种搞定各种工作。

学习一种面向对象的语言的同时，也学习一种像 Haskell 或 Scala 这样的函数式编程语言，这能拓展你的思维和编程认知。你能够在本文找到学习这 5 种语言的更多理由。

言归正传，上面就是我列出的 5 种每个程序员或软件开发者都该尝试学习的编程语言。

它蕴含了语言的大杂烩，比方 [面向对象的] 语言，函数式的语言，脚本语言，提供了对底层的管制，也涵盖了宽泛用于服务端开发的语言。

Java
Java 是近二十年来最风行的语言之一。它统治着寰球的服务端利用开发，同时在基于 Anroid 开发的挪动利用市场，以及企业 web 开发畛域，也占有相当一部分比重。

Java 最后的构想是一次编写各种平台均能运行（write once run anywhere）。随着工夫的推移，它的确做到了运行在各个平台的各个角落。

你应该学习应用 Java 构建强壮的、可扩大的服务端利用。你能够用 Java 构建多种复杂度的工程。与之相伴的，有很棒的工具、技术和社区反对。

为什么你应该学 Java 呢？你会学到如果专一于利用层面和代码构造的设计，而不必关怀特定零碎的细节和内存治理。JVM 帮你搞定了前面这些。

Java 被许多世界上的大型组织所应用。而且可能向泛滥用户展现你用 Java 开发的 Android 利用。

Python
在寰球范畴的学校和院系，Python 是传授最多的语言之一。在美国，许多学术课程中，Python 曾经取代了 Java 成为接触编程的首选语言。你将从学习 Python 中失去什么呢？——那将十分多。

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Python 既能用于写脚本，也能作为一种面向对象的语言编写大型工程。