logging

This story was originally published on HackerNoon at: https://hackernoon.com/using-diagnostic-observers-to-decouple-logging-and-observability-code.
Using DiagnosticSource and IObserver implementation to decouple logging code; improving the method adapter to properly handle event data binding.
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This article reviews the observability feature in Microsoft libraries provided by DiagnosticSource class, goes over implementation details and specifics how to receive and handle the diagnostic events. It explores the Microsoft's method adapter package to solve event property binding to method parameters, and proposes a solution to its issues, thus making the approach more usable.

In this Hasty Treat, Scott and Wes talk about whether decorators are finally here, what the uses cases are for decorators, how to define a decorator, and what auto accessor is.

Show Notes

• 00:25 Welcome
• 01:00 Are decorators finally here?
• TC39 proposal
• How this compares to other versions of decorators
• 06:47 What are use cases for decorators?
• 10:55 How do you define a decorator?
• 14:20 Auto Accessor

on classes

@loggged class C {} 

on fields

class C { @logged x = 1; } 

Auto Accessor

class C {   accessor x = 1; } 

sugar for below

class C {   #x = 1; // # means private    get x() {     return this.#x;   }    set x(val) {     this.#x = val;   } } 

Can be decorated and decorator can return new get and set and init functions

function logged(value, { kind, name }) {   if (kind === "accessor") {     let { get, set } = value;      return {       get() {         console.log(`getting ${name}`);          return get.call(this);       },        set(val) {         console.log(`setting ${name} to ${val}`);          return set.call(this, val);       },        init(initialValue) {         console.log(`initializing ${name} with value ${initialValue}`);         return initialValue;       }     };   }    // ... } 

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While electric vehicle use is growing rapidly, the internal combustion engine remains completely dominant in the world of heavy trucks. At some point in the future, Tesla has a plan to commercialize an electric semi, but nobody really knows when. Meanwhile, other entities are looking to compete in the world of industrial vehicles. Chace Barber is a former trucker in the logging industry, which has some very different characteristics than the type of freight trucking you typically see on a highway. When you're driving over the Rocky Mountains, without easy proximity to mechanics, tow trucks or service stations, you need power and reliability. His company, Edison Motors, is building its own trucks with a hybrid diesel-electric approach that it sees as a better path forward. On this episode, we discuss the challenges of hauling logs, as well as how it's possible for a small entity to get in the game of building such large industrial equipment.

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In this classic invention-themed episode of Stuff to Blow Your Mind, Robert and Joe discuss an important piece of cutting technology. Plus, during the Halloween season, masked brutes will chase you around your local haunted attraction with one of these if you buy a ticket. Yes, it’s time to discuss the chainsaw. (originally published 10/26/2021)

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In this Hasty Treat, Scott and Wes talk about some Javascript one liners that speed up your coding experience in one line.

Sponsor - Linode

Whether you’re working on a personal project or managing enterprise infrastructure, you deserve simple, affordable, and accessible cloud computing solutions that allow you to take your project to the next level. Simplify your cloud infrastructure with Linode’s Linux virtual machines and develop, deploy, and scale your modern applications faster and easier. Get started on Linode today with a $100 in free credit for listeners of Syntax. You can find all the details at linode.com/syntax. Linode has 11 global data centers and provides 24/7/365 human support with no tiers or hand-offs regardless of your plan size. In addition to shared and dedicated compute instances, you can use your $100 in credit on S3-compatible object storage, Managed Kubernetes, and more. Visit linode.com/syntax and click on the “Create Free Account” button to get started.

Sponsor - Sentry

If you want to know what’s happening with your code, track errors and monitor performance with Sentry. Sentry’s Application Monitoring platform helps developers see performance issues, fix errors faster, and optimize their code health. Cut your time on error resolution from hours to minutes. It works with any language and integrates with dozens of other services. Syntax listeners new to Sentry can get two months for free by visiting Sentry.io and using the coupon code TASTYTREAT during sign up.

Show Notes

• 00:24:12 Welcome
• 01:24:11 Sponsor: Linode
• 02:11:02 Sponsor: Sentry
• 03:54:18 Twitter ask for One Liners
• 04:24:05 Math random const getPsuedoID =() => Math.floor(Math.random() * 1e15);
• 05:43:09 Random color
• Paul Irish random color '#'+Math.floor(Math.random()*16777215).toString(16);
• 06:41:06 Console.log as an object. console.log({ dog, person }); VS Marketplace Link
• 08:29:17 Edit anything document.designMode = "on"
• 10:15:15 Temporal date export const today = Temporal.Now.plainDateISO();
• 11:44:05 Console(log) const myFunc = (age) ⇒ console.log(age) || updateAge()
• 13:26:13 Remove a prop const { propToRemove, ...rest } = obj;
• 15:29:01 PHP style debugging preElement.innerText ={JSON.stringify(val, '', ' ')}`
• 16:31:00 First and Last Destructure var {0: first, length, [length - 1]: last} = [1,2,3];
• 17:34:17 Speed up audio video document.querySelector('audio, video’).playbackRate = 2
• Overcast
• 19:44:15 Sleep function let sleep = (time = 0) => new Promise(r => setTimeout(r, time))
• 20:26:00 If statements on one line If (!thing) return 'something'

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In today’s invention-themed episode of Stuff to Blow Your Mind, Robert and Joe discuss an important piece of cutting technology. Plus, during the Halloween season, masked brutes will chase you around your local haunted attraction with one of these if you buy a ticket. Yes, it’s time to discuss the chainsaw.

See omnystudio.com/listener for privacy information.