repost: Ports that are blocked by browsers - Keenformatics Today I was experimenting with a small project using Docker and Flask. I just created two identical services and exposed them on two different ports: nothing fancy. However, to my surprise, only one of the two seemed to be working. The...

repost: Custom Excel number format by [Svetlana Cheusheva](https://www.ablebits.com/office-addins-blog/author/svetlana-cheusheva/), updated on October 10, 2023 This tutorial explains the basics of the Excel number format and provides the detailed guidance to create custom formatting. You will learn...

repost: Oracle Type Code Mappings Use case: Imagine that you need to represent type codes for the Oracle data types across PL/SQL, Java and C. Challenge: Oracle uses different type codes in different contexts. This is fair enough if they need to adhere to standards (eg JDBC), but there’s really no...

repost: Understanding Node.js Streams - Dennis O’Keeffe # Overview Streams can be a less approachable topic for those working with Node.js. Within Node.js, there are four fundamental stream types that exist: Writeable: Streams that you can write data to. Readable: Streams that you can read data...

转载：Shell 脚本必学技能：$1 变量详解 # 特殊变量说明 Shell 脚本中常用的特殊变量及其含义 变量 含义 $0 脚本名称 $1 第一个参数 $2 第二个参数 $# 参数总数 $@ 所有参数列表 # 实用案例 通过实际案例学习命令行参数的使用 goto - 快速切换目录并查看内容 1goto() { cd $1 && ls -al } mkcd - 创建并进入新目录 1mkcd() { mkdir -p $1 && cd $1...

repost: Why Two Awaits? -Tom Steven I have a simple node server that demonstrates this content. The related code is all here. You’ve seen these two await s before, right? 1234// first awaitlet response = await fetch("/some-url");// second awaitlet myObject = await...

# Content-Disposition from: atangshare/content-disposition MDN Content-Disposition The HTTP Content-Disposition header indicates whether content should be displayed inline in the browser as a web page or part of a web page or downloaded as an attachment locally. The first parameter in the HTTP...

repost: How AS2 Works This guide provides a comprehensive description of the operation of the AS2 protocol. The high level layout is broken down as follows: How does AS2 work? Key components of an AS2 system Message flow in AS2 # 1 How does AS2 work? Internal applications, first generate files...

# Email Header X-Sender: custom field corresponding to the SMTP sender. X-Receiver: custom field corresponding to the SMTP receivers. From: sender email address. To: receiver email address. Cc: this field is used by the sender to send an email to different people. Reply-To: If a receiver replies to...

From: opencv-course # Reading Images & Video 12345678910111213141516171819202122232425import cv2 as cv# Reading Image# img = cv.imread('./Resources/Photos/cat.jpg')# img = cv.imread('./Resources/Photos/cat.jpg', cv.IMREAD_GRAYSCALE) # Read as Gray...