Low-Code for the Node.js Developer

Node-RED is a low-code development tool, that lets you quickly build applications by dragging components into a workspace and wiring them together to represent the logical flow of events. It can be an invaluable tool for developers of any experience and can be, for Node.js developers in particular, quick and easy to extend. This talk looks at what low-code development is, why it’s interesting for Node.js developers and cover some design principles for making good Node-RED nodes.

Transcript

1. @knolleary Low-Code for the Node.js Developer Low-Code for the Node.js Developer July 2020 Nick O’Leary, @knolleary Open Source Developer Node-RED Project Lead
2. @knolleary Low-Code for the Node.js Developer 1st Generation Machine Code 0100 0011 0110 0110 1010 1110 1001 0011 1010 1110 1001 0011 0100 0011 0110 0110 0110 0110 1010 1110 1001 0011 0100 0011 1110 1001 0011 0100 0011 0110 0110 1010 0100 0011 0110 0110 1010 1110 1001 0011
3. @knolleary Low-Code for the Node.js Developer 2nd Generation Assembly Languages MOV AL, 1h ; Load AL with immediate value 1 MOV CL, 2h ; Load CL with immediate value 2 MOV DL, 3h ; Load DL with immediate value 3 MOV EAX, [EBX] ; Move the 4 bytes in memory at the address contained in EBX MOV [ESI+EAX], CL ; Move the contents of CL into the byte at address ESI+EA MOV DS, DX ; Move the contents of DX into segment register DS
4. @knolleary Low-Code for the Node.js Developer 3rd Generation Fortran, COBOL, ALGOL, C, Java, Python, JavaScript, Go, Ruby, C++, C#, Swift if (parsedArgs.define) { var defs = parsedArgs.define; try { while (defs.length > 0) { var def = defs.shift(); var match = /^(([^=]+)=(.+)|@(.*))$/.exec(def); if (match) { if (!match[4]) { var val = match[3];
5. @knolleary Low-Code for the Node.js Developer 4th Generation Non-procedural languages Domain specific
6. @knolleary Low-Code for the Node.js Developer Increasing Abstraction
7. @knolleary Low-Code for the Node.js Developer Low-Code Programming
8. @knolleary Low-Code for the Node.js Developer
9. @knolleary Low-Code for the Node.js Developer Abstraction in Node
10. @knolleary Low-Code for the Node.js Developer
11. @knolleary Low-Code for the Node.js Developer .js
12. @knolleary Low-Code for the Node.js Developer .js .html
13. @knolleary Low-Code for the Node.js Developer .js .html .json
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22. @knolleary Low-Code for the Node.js Developer Edit dialog template Help text
23. @knolleary Low-Code for the Node.js Developer Node definition Appearance Properties Custom behaviour
24. @knolleary Low-Code for the Node.js Developer Make it intuitive
25. @knolleary Low-Code for the Node.js Developer Make it intuitive
26. @knolleary Low-Code for the Node.js Developer Make it intuitive
27. @knolleary Low-Code for the Node.js Developer Make it intuitive
28. @knolleary Low-Code for the Node.js Developer Make it intuitive
29. @knolleary Low-Code for the Node.js Developer Have sensible defaults
30. @knolleary Low-Code for the Node.js Developer Have sensible defaults
31. @knolleary Low-Code for the Node.js Developer Have sensible defaults
32. @knolleary Low-Code for the Node.js Developer Choose what can be controlled dynamically
33. @knolleary Low-Code for the Node.js Developer Choose what can be controlled dynamically
34. @knolleary Low-Code for the Node.js Developer Choose what can be controlled dynamically
35. @knolleary Low-Code for the Node.js Developer Be forgiving
36. @knolleary Low-Code for the Node.js Developer Handle errors with grace
37. @knolleary Low-Code for the Node.js Developer Handle errors with grace Attempting to resume normally after an uncaught exception can be similar to pulling out the power cord when upgrading a computer. Nine out of ten times, nothing happens. But the tenth time, the system becomes corrupted.
38. @knolleary Low-Code for the Node.js Developer Be consistent
39. @knolleary Low-Code for the Node.js Developer Have empathy for your users Make it intuitive Have sensible defaults Choose what can be controlled dynamically Be forgiving Handle errors with grace Be consistent
40. @knolleary Low-Code for the Node.js Developer Node-RED Community https://nodered.org/slack https://discourse.nodered.org https://twitch.tv/knolleary - Mondays@8PM (GMT+1)
41. @knolleary Low-Code for the Node.js Developer Low-Code for the Node.js Developer July 2020 Nick O’Leary, @knolleary Open Source Developer Node-RED Project Lead