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js-unit-testing-examples — 🤓 JavaScript Unit Testing Examples
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20 September
15 September
From one piece @paulg on X 2 beliefs · x.com
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Their words
Someone needs to define the unit, perhaps using a chain of increasingly hard problems, each pair of which can be solved by a single model.
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korrents.com
Tokens are not the true unit of AI inference, because better models yield more problem-solving per token.Their words
Although you pay for AI by the token, that's not the unit of inference, because you get more problem solving per token as models improve.
7 September
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Their words
unit tests are just source code at this point e2e test is the only real kind of test we can trust to guard actual behavior
6 September
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korrents.com
Astra writes weird Python slop when one step removed from normal code, and its unit tests are horrific.Their words
when it's "one step removed" from normal code it writes weird Python slop. The unittests it writes are absolutely horrific.
4 September
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Their words
It's important to do things fast You learn more per unit time because you make contact with reality more frequently Going fast makes you focus on what's important; there's no time for bullshit
1 September
19 August
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korrents.com
Reducing emissions intensity per unit of production does not by itself lower total emissions if output volume rises.Their words
AI may help an oil company emit less pollution per barrel of oil. But if the company is producing more barrels than it otherwise would have, total emissions can still rise.
15 August
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korrents.com
Manufacturers generally prefer cutting per-unit production costs over retooling a design for small improvements.Their words
Over time companies would vastly prefer to decrease the cost per unit rather than retool for a small tweak.
2 August
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korrents.com
Needing fewer people per unit of output does not mean a company ends up employing fewer people.Their words
if you are using these systems right you can just grow more quickly you can build more things you can take on more stuff so you know I would be surprised actually if we ended up with like net fewer
30 July
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korrents.com
The numbers an AI engineer should know by heart are memory bandwidths and the energy cost of a single operation.Their words
Yeah, I mean I think if you looked at what is important in AI systems these days, you would want to know things like the bandwidth between you know your main memory system on your accelerator to the onchip memory to the um you know the multiplier unit or whatever. You want to know how much energy does it take to do a single multiplier operation.
27 July
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Their words
I I think this is sort of the crazy thing about building on models. It's just so different than all the engineering that I've ever done. Like in the past when you built on systems, you built these like big beautiful systems and you really think about the system design up front. You have like a big suite of unit tests. You think about everything and you know, like a re-architecture is a big project.
23 July
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Recommendsrcmnd.app
Mitsubishi air conditioningTheir words
LG or Mitsubishi air conditioning in EVERY room, both cooling/heating, every unit should have its own outdoor unit, or you get annoying things like you can't cool one room and heat the other at same time! I think they're called mono splits
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Recommendsrcmnd.app
LG air conditioningTheir words
LG or Mitsubishi air conditioning in EVERY room, both cooling/heating, every unit should have its own outdoor unit, or you get annoying things like you can't cool one room and heat the other at same time! I think they're called mono splits
20 July
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Their words
We kind of expect that we can go to work and we can work really hard for eight hours straight during the day, but like the brain doesn't really work like that.
15 July
From one piece Context engineering with Dex Horthy 2 beliefs, in the piece's order there
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the problem with training models on maintainability is like the cost function of bad architecture and bad program design can't be evaluated by running the unit test because it hits you 3 to 6 months later
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Their words
yes it will catch things and it will raise your floor but I don't believe like the model writing the code is the same model reading the code and if you ask a model hey is this code good it's going to be like oh yeah it's great comprehensive it's got unit tests
1 July
From one piece How Kent Beck shapes the software engineering industry 2 beliefs, in the piece's order there
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Their words
Then you had code review which gave you another level of feedback. You could roll out internally more frequently. And everybody was using Facebook for all kinds of stuff, personal and internal business stuff. So whatever feature you developed, people would start using it immediately. So you get another round of feedback. Then we had this phased roll out process where you'd start rolling your stuff out. If there was a problem, the blast radius would be limited to a a few million people.
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Their words
So beforehand because of this social divide between programmers and testers. There was a lot of incentive for the testers to have their own language. This is my tool. I know how to run it. I'm going to run it.
26 June
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Um but it would be possible and it would have been possible for somebody to disprove the erdos unit distance conjecture before we did using a general purpose model. And nobody had explored sufficiently what happens if I put $100,000 worth of compute into 5.5 what could it do?
10 June
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Their words
rather than studying the specific diseases we think that by trying to understand inflammation more broadly that will make it so that other companies that can then use these tools can work on specific therapies.
22 May
15 May
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I still believe that unit testing should be nothing more than "tell me if something unexpected happened."
13 May
2 May
15 April
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korrents.com
Nvidia did not build a tensor processing unit — it built accelerated computing, whose market reach no ASIC can match.Their words
Our market reach is far greater than any any TPU can any ASA can possibly have. And so if you look at our position, uh we're the only company that that accelerates applications of all kinds.
25 March
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Their words
Worse, you realize that the gazillions of unit, snapshot, and e2e tests you had your clankers write are equally untrustworthy. The only thing that's still a reliable measure of "does this work" is manually testing the product.
14 March
13 March
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Their words
and even if you take a generous interpretation of 128 * 8 gig transfers, you're at 128 gigabytes a second for the same shoreline versus 2 and a half terabytes a second. There's a there's an order of magnitude difference in bandwidth per edge area.
11 March
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Their words
Expectation: the age of the IDE is over Reality: we’re going to need a bigger IDE (imo). It just looks very different because humans now move upwards and program at a higher level - the basic unit of interest is not one file but one agent. It’s still programming.
26 November 2025
11 October 2025
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korrents.com
A data centre earns its county far more tax revenue per gallon of water than a golf course does.Their words
Data centers are so much more efficient with their water that they generate 50x as much tax revenue per unit of water used than golf courses in the county:
19 September 2025
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Their words
So the Navy hired the shoe runners unit from the SS, paid them money, and then gave them drugs, different kinds of drug combinations, methamphetamine combined with cocaine and chewing gum and all kinds of things. So this is a big thing, you know. And there are documents to it.
23 July 2025
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korrents.com
Information is the most fundamental unit of the universe, more fundamental than energy or matter.Their words
And it sort of fits with the way I think about physics in general, which is that I think information is primary, information is the most sort of fundamental unit of the universe, more fundamental than energy and matter.
6 July 2025
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If a new monetary network with its own unit (i.e. not pegged to an existing currency as a credit rail on top of it, but rather a fully parallel system to central banks) is going to bootstrap from zero to massive, it requires upward volatility.
29 June 2025
3 February 2025
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Their words
But really the software engineering agents I think can be done faster sooner than any other agent because it is a verifiable domain. You can always unit test or compile, and there's many different regions of it can inspect the whole code base at once, which no engineer really can.
22 December 2024
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korrents.com
The true unit of life is not DNA and not the cell but the biosphere — the whole community.Their words
Because the bacteria, even though they're individual examples of life, and I believe this the true unit of life, it's not DNA, it's not a cell, it's the biosphere. It's the whole community.
19 June 2024
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Their words
What is the weakness of Google is that any ad unit that’s less profitable than a link, or any ad unit that kind of disincentivizes the link click is not in their interest to go aggressive on, because it takes money away from something that’s higher margins.
14 April 2024
13 March 2024
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korrents.com
Making American farms more productive shrinks cropland in the rest of the world by more than it adds at home.Their words
Nelson Villoria estimates that for every 1% gain in Total Factor Productivity (inputs required per unit of output) in the US, croplands in the rest of the world shrink by 0.7%.
26 January 2024
7 January 2024
5 January 2023
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