Ben Chuanlong Du's Blog

It is never too late to learn.

Tips on UPS

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Overnight Shipping Delay Handling

  1. Just talk to the local UPS store where you shipped the overnight package. Do NOT call 800-742-5877 even if they ask you to do that as it …

Producer Consumer Pattern in Java

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

https://www.youtube.com/watch?v=tEwNXnAmc9c Producer Consumer Pattern - With Java Example

Understand DSL in Kotlin

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Kotlin DSL in under an hour by Anton Arhipov

https://www.youtube.com/watch?v=0DJqr4FZ6f0

Kotlin tutorial : How to use Function Literal with Receiver in Kotlin | Kotlin 101

https://www …

Tips on Retirement Accounts

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

General Tips

  1. You can contribute to your own IRA accounts even if you have maxed out your 401K contributions. For people without coverage of work 401K plans and low income, those …

Tips on Pattern Day Trading

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

https://www.investopedia.com/terms/p/patterndaytrader.asp

https://forum.alpaca.markets/t/apierror-trade-denied-due-to-pattern-day-trading-protection/211

https://www.finra.org/investors/investing/investment-products/stocks/day-trading

https://alpaca.markets/support/pattern-day-trading-protection

Here are …

Tips on the Uplift Desk

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Troubleshooting

If your desk will move downwards, lower it to the lowest possible position. Next, hold the down button on your keypad for 30 seconds without letting go. Then release.

(Please …