Peter Naur's classic 1985 essay "Programming as Theory Building" argues that a program is not its source code. A program is a shared mental construct (he uses the word theory) that lives in the minds of the people who work on it. If you lose the people, you lose the program. The code is merely a written representation of the program, and it's lossy, so you can't reconstruct
CAUTION: This information is mostly obsolete. Xcode 11 allows a project to directly declare its Swift Package Manager dependencies.
This gist walks through creating an Xcode project for an iOS app that consumes packages in Swift Package Manager (SPM).
We'll be using Xcode 10.2 and Swift 5.
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/* | |
* Self-Explanatory Protocol Buffer Lang Guide | |
*/ | |
/* | |
* Why Protocol Buffers? | |
* Protocol buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data – think XML, but smaller, faster, and simpler. | |
* You define how you want your data to be structured once, then you can use special generated source code to easily write and read your structured data to and from a variety of data streams and using a variety of languages. | |
* Protocol Buffers are Schema Of Messages. They are language agnostic. |
原文:中生代技术
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1.1 架构师图谱
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<?xml version="1.0" encoding="UTF-8"?> | |
<opml version="1.0"> | |
<head> | |
<title>Stephen subscriptions in feedly Cloud</title> | |
</head> | |
<body> | |
<outline text="Companies" title="Companies"> | |
<outline type="rss" text="Trello" title="Trello" xmlUrl="https://trello.engineering/feed.xml" htmlUrl="http://tech.trello.com/"/> | |
<outline type="rss" text="IMVU" title="IMVU" xmlUrl="http://engineering.imvu.com/feed/" htmlUrl="https://engineering.imvu.com"/> |
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第一步,在/etc/yum.repos.d/目录下创建一个源配置文件nginx.repo: | |
cd /etc/yum.repos.d/ | |
vim nginx.repo | |
填写如下内容: | |
[nginx] | |
name=nginx repo |