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...

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...

repost: Styling Tables the Modern CSS Way HTML tables are almost as old as the web itself, and have been used — and abused — for decades. Once upon a time, intrepid web designers hacked together complex layouts using tables, in the absence of other suitable methods. Thankfully that’s no longer...

repost: Command Line Data Processing: Using DuckDB as a Unix Tool TL;DR: DuckDB’s CLI client is portable to many platforms and architectures. It handles CSV files conveniently and offers users the same rich SQL syntax everywhere. These characteristics make DuckDB an ideal tool to complement...

# Window Sort Window Sort After Join 1234567891011121314151617181920212223242526272829303132333435select distinct "ITEMS_IN_CARTON", "WT_NET_PER_CARTON" as net_weight, "WT_GROSS_PER_CARTON" as gross_weight, "CTN_DIM_L" as...