姚文强 yaowenqiang

Fibers

Fibers are an abstraction over sequential computation, similar to threads but at a higher level. There are two ways to think about this model: by example, and abstractly from first principles. We'll start with the example.

(credit here is very much due to Fabio Labella, who's incredible Scala World talk describes these ideas far better than I can)

Callback Sequentialization

Consider the following three functions

Get fiddlers base64 encoded root certificate

Install fiddler winget install -e --id Telerik.Fiddler
Open fiddler and go to Tools -> Options -> HTTPS
Enable Decrypt HTTPS traffic
Click the Actions button and select Export root certificate to desktop
Right click the FiddlerRoot.cer file on the desktop and click Open with -> Crypto Shell Extensions
In the Certificate window that opens up go to Details -> Copy to File
Click Next then select Base-64 encoded X.509 (.CER) then specify the file name (E.G. FiddlerRootBase64.cer)
Click Next to create the new file

ES Modules are terrible, actually

This post was adapted from an earlier Twitter thread.

It's incredible how many collective developer hours have been wasted on pushing through the turd that is ES Modules (often mistakenly called "ES6 Modules"). Causing a big ecosystem divide and massive tooling support issues, for... well, no reason, really. There are no actual advantages to it. At all.

It looks shiny and new and some libraries use it in their documentation without any explanation, so people assume that it's the new thing that must be used. And then I end up having to explain to them why, unlike CommonJS, it doesn't actually work everywhere yet, and may never do so. For example, you can't import ESM modules from a CommonJS file! (Update: I've released a module that works around this issue.)

And then there's Rollup, which apparently requires ESM to be u

How To Install OpenSSL 1.1.1 on CentOS 7

This tutorial goes through how to install openssl 1.1.1 on CentOS 7, since the yum repo only installs up to openssl 1.0.

Requirements

Upgrade the system

yum -y update

You are doing JSON APIs wrong.

When you use JSON to call an API - not a REST API, but something like JSON-RPC - you will usually want to encode one of several possible messages.

Your request body looks like this:

{
 "type": "MessageWithA",

Modify /etc/nginx/nginx.conf file
Modify /etc/nginx/sites-available/site.conf file
Create /etc/nginx/useragent.rule file

Where to find user agent strings?
https://explore.whatismybrowser.com/useragents/explore/software_name/facebook-bot/

Looking for same but for Apache2? Here: https://techexpert.tips/apache/apache-blocking-bad-bots-crawlers/

`$HOME`, Not So Sweet `$HOME`

Preface
1 What is $HOME to you?
2 Setup
- 2.1 Linux
2.1.4 xdg-user-dirs

	// I'm tired of extensions that automatically:
	// - show welcome pages / walkthroughs
	// - show release notes
	// - send telemetry
	// - recommend things
	//
	// This disables all of that stuff.
	// If you have more config, leave a comment so I can add it!!

	{

	VERSION = \"1.0.0\"

	PREFIX ?= out
	INCDIR = include
	SRCDIR = src
	LANG = c
	OBJDIR = .obj

	MODULE ?= binary_name
	CC ?= gcc

	"""
	Sample file to test the trace module.

	This should print:

	...
	******** Trace Results ********
	Used classes:
	only static init:
	not only static init: