Righ model, right tools - the new way of building and collaborating on frontend apps is the core element of Micro Frontends.
Remove Image Background
Remove backgrounds 100% automatically in 5 seconds with one click. Thanks to remove.bg https://www.remove.bg/ clever AI.
Geekbench head to head - Mac vs iPad vs Android
Geekbench head to head - Mac vs iPad vs Android:
- 10 years old Mac mini Late 2012 (2.6GHz quad-core Intel Core i7 Turbo Boost up to 3.6GHz)
- 4 years old MacBook Pro 15-inch Mid 2018 (2.6GHz 6-core Intel Core i7, Turbo Boost up to 4.3GHz)
- 4 years old iPad Pro 11” 2018 3rd gen (A12X Bionic 7 nm, 4-core Vortex at 2.5GHz , 4-core Tempest at 1.6GHz)
- 1 year old MacBook Pro 16-inch 2021 (Apple Silicon M1 Pro, 10-core CPU at 3.2GHz)
- 没满岁的 Android (Snapdragon 8 Gen1, 1 core Cortex-X2 at 3GHz, 3-core Cortex-A710 at 2.5GHz, and 4-core Cortex-A510 at 1.8GHz)
Conclusion:
- Intel 已经是江河日下,被时代淘汰
- Apple Processors 实在太强。 四年前的处理器还可吊打当前最新的 Snapdragon Processors
- 同是 2018 年产品,iPad Pro 把 Intel CPU based 的 MacBook Pro 按在地上碾压
ARM vs x86 谁是未来,一目了然。
NOTE
The Apple M1 chip is built for Macs, and the A15 for phones. They use completely different architectures. The A15 prioritizes battery over performance. The M1 has more firepower for graphics.
How to use Web Inspector and debug Safari on iPhone/iPad
Prerequisites:
- iPhone / iPad / iPod and the Macbook on the same version of Safari
- a genuine Apple lightning or USB cable
Step by step:
- On iPad, iPhone or iPod touch, go to menu Settings > Safari > Advanced and toggle on Web Inspector. Enable JavaScript if it isn’t already on
- On Macbook, launch Safari and go to menu Preferences > Advanced then toggle on “Show Develop menu in menu bar”
- Connect iOS device to Macbook with the lightning or USB cable
- Now on iOS device, open Safari and go to the website you want to debug
- On Macbook, open Safari and go to “Develop” menu. You now see your iOS device that has connected with Macbook (if no page opened on iOS device, you see a message saying “No Inspectable Applications”)

- Click on the website in Safari Develop > iOS device menu, Web Inspector window opened, then you can debug as you used to debug in Safari

GitHub Actions
Have you tried GitHub Actions?
- GitHub Actions
- GitHub Actions Workflow
Powerful Zsh
First you have Zsh
, next install Oh My Zsh
https://ohmyz.sh/
1 | sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" |
Add Powerlevel10k
https://github.com/romkatv/powerlevel10k and configure it
1 | git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/themes/powerlevel10k |
Set ZSH_THEME
to powerlevel10k in .zshrc
1 | ZSH_THEME="powerlevel10k/powerlevel10k" |
Then run Powerlevel10k
configure:
1 | p10k configure |
Add zsh-autosuggestions
https://github.com/zsh-users/zsh-autosuggestions
1 | git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions |
Add zsh-syntax-highlighting
https://github.com/zsh-users/zsh-syntax-highlighting
1 | git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting |
and enable them in .zshrc
:
1 | ... |
Install Fig
(deprecated) https://fig.io/, an IDE-style autocomplete but for terminal, and configure in .zshrc
1 | ... |
References
- How To Make Your Boring Mac Terminal So Much Better, https://www.youtube.com/watch?v=CF1tMjvHDRA
- How To Setup Your Mac Terminal, https://www.josean.com/posts/terminal-setup
Convert JSON to CSV by using jq
Step by step convert exported JSON data from AWS DynamoDB table into CSV, by using jq
.
Export all the data from AWS DynamoDB table at first:
1 | 𝜆 aws --profile production dynamodb scan --table-name tiles > tiles.json |
The exported JSON data looks like:
1 | { |
Extract / transform JSON data:
1 | 𝜆 cat tiles.json | jq '[.Items[] | { id: .id.S, title: .title.S, description: .description.S, status: .status.S, valid_from: .valid_from.S, valid_to: .valid_to.S }]' > tiles-extracted.json |
Convert JSON data into CSV:
1 | 𝜆 cat tiles-extracted.json | jq -r '(.[0] | keys_unsorted) as $keys | $keys, map([.[ $keys[] ]])[] | @csv' > tiles.csv |
References
- How to convert arbitrary simple JSON to CSV using jq, https://stackoverflow.com/questions/32960857/how-to-convert-arbitrary-simple-json-to-csv-using-jq
Customise VS Code settings and keybindings with Geddski macros
In IntelliJ IDEA, you can comment a line, the cursor is moved to the next line automatically. This is a very easy way to comment several lines. However, in VS Code, default behaviour is that the cursor stays on the same line.
To copy the behavior of IntelliJ, go with:
Install
macros
author by geddski in VS Code.Edit
settings.json
and add:
1 | "macros": { |
- Edit
keybindings.json
and add:
1 | [ |
Export and Import AWS DynamoDB data
A simple, straightforward way export and import AWS DynamoDB table’s data with AWS CLI and a few scripts.
At first, export all the data from AWS DynamoDB table:
1 | 𝜆 aws --profile production dynamodb scan --table-name tile-event > tile-event-export.json |
Convert a list of items/records (DynamoDB JSON) into individual PutRequest JSON with jq
.
1 | 𝜆 cat tile-event-export.json | jq '{"Items": [.Items[] | {PutRequest: {Item: .}}]}' > tile-event-import.json |
Transform the data if necessary:
1 | 𝜆 sed 's/tile-images-prod/tile-images-pdev/g' tile-event-import.json > tile-event-import-transformed.json |
Split all requests into 25 requests per file, with jq
and awk
(Note: There are some restriction with AWS DynamoDB batch-write-item request - The BatchWriteItem operation can contain up to 25 individual PutItem and DeleteItem requests and can write up to 16 MB of data. The maximum size of an individual item is 400 KB.)
1 | 𝜆 cat tile-event-processed.awk |
Import all 22 processed JSON files into DynamoDB table:
1 | for f in tile-event-import-processed-{1..22}.json; do \ |
Get and read logs from AWS CloudWatch with saw
For all the people painfully read logs on AWS CloudWatch console, saw is your friend.
Get CloudWatch log groups start with paradise-api
:
1 | 𝜆 saw groups --profile ap-prod --prefix paradise-api |
Get last 2 hours logs for paradise-api
from CloudWatch, with saw:
1 | 𝜆 saw get --profile ap-prod --start -2h paradise-api-CloudFormationLogs-mwwmzgYOtbcB --prefix docker | jq .log | sed 's/\\\n"$//; s/^"//' |