Creating a CLI program by using Cobra Generator

This is a step by step on how to create a Go program to generate a liquidation report by using Cobra Generator.

Useful Website Links

• File Sharing/transfers
• Compare list
• Convert a website table to Markdown
• Convert Spreadsheet table to Markdown
• myapps.microsoft.com: my applications

Microsoft PowerToys

Microsoft PowerToys is a set of utilities for power users to tune and streamline their Windows experience for greater productivity.

Viper

Viper is a complete configuration solution for Go applications from spf13.

Precedence Order

Viper uses the following precedence order. Each item takes precedence over the item below it:

Installation

• Download the installer from PostgreSQL Download Page
• Install the server, pgAdmin and command line tools, but not Stack Builder(Drivers and add-ons for other language)
• You can install multiple database server in the same computer as long as their port is different

For Windows

• Data Directory: C:\Program Files\PostgreSQL\13\data
• Superuser: postgres / my-password
• Locale: [Default locale]

For Linux

// check version
lsb_release -a
sudo apt update
// version 12 in Ubuntu 20
sudo apt install postgresql

sudo -u postgres createuser --interactive

sudo -i -u postgres
createdb dbname

psql
\? // list all psql commands
\h // list all the SQL commands
\conninfo
\l
\d
ALTER USER postgres PASSWORD 'root';
\q // quit

Verify

From the Start > PostgrSQL 13, you can open pgAdmin or SQL Shell to test the installation.

Our system uploaded the exported Inventory All Fields file into Egnyte Plateform every day for each facility. I need to analyze this file to create two reports each week. (Each file is about 70M or more).

How to copy files between Google Drive?

• Click the link to go to the shared Google Drive page in browser
• Sign in to your Google Drive account
• Right-click the shared folder and select Add Shortcut to Drive to add a shared folder shortcut to a specific folder(My Drive/XingFu) of your Drive. You can delete this afterwards.

Validator Usage

go-playground/validator

Note: Validator will fail at the first tag that violet the rule.

For example, a string “A.G” with rule “alpha,min=10” will cause the following error:

Echo Web Framework

How to get URL parameter and query parameter values?

// localhost/user/123?name=Andrew&age=12
e.GET("/user/:id", showInfo)

func showInfo(c echo.Context) error {
    // name, age are get from url parameters; 
    myname := c.QueryParam("name") // Andrew
    myage := c.QueryParam("age") // 12
    
    // id is get from url path
    myid := c.Param("id") // 123
	...
}	

Binding

Binding request data

In the struct definitions each field can be tagged to restrict binding to specific source.

IBM Carbon Components - Svelte

DatePicker

<script>
  import { DatePicker, DatePickerInput } from "carbon-components-svelte";
</script>

<DatePicker datePickerType="single" dateFormat="m/d/Y">
  <DatePickerInput labelText="Schedule a meeting" placeholder="mm/dd/yyyy" />
</DatePicker>

• When set datePickerType to single or range, the calendar will show out
• dateFormat use only one character for day, month and year. e.g. March 15, 2021 - m/d/Y(03/15/2021) or Y-m-d(2021-03-15)

Reference

• IBM Carbon Design System
• Carbon-Svelte Storybook
• Github - Carbon Svelte Components

Table

colspan & rowspan Examples

<table>
  <tr>
    <td>Row 1, Col 1</td>
    <td>Row 1, Col 2</td>
  </tr>
  <tr>
    <td colspan="2">Row 2, Col 1 & Col 2</td>
  </tr>
</table>

<table>
  <tr>
    <th>Row 1, Col 1</th>
    <th>Row 1, Col 2</th>
  </tr>
  <tr>
    <td>Row 2, Col 1</td>
    <td rowspan="2">Row 2 & Row 3, Col 2</td>
  </tr>
  <tr>
    <td>Row 3, Col 1</td>
  </tr>
</table>

Link

Jump to a topic

If you want to link to a specific topic/section of a page, Add an id attribute and give a name to the section of the page.