关于javascript:2020年末记随笔

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。

许多风行的网站，比方Reddit，就应用基于Python的框架来构建，比方Django。近段时间，许多大型组织也转向应用基于Python的框架了。

Python也越来越多地用于像机器学习、人工智能、数据迷信这样的新一代技术中。这也难怪，因为有基于Python的十分棒的机器学习库，比方TensorFlow、Scikit-Learn以及其余。