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exidy

346 karma · joined April 29, 2014

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exidy··on The largest city in each 10x10 degree latitude/longitude box
Apparently it's 401 now[1].

[1] https://all-populations.com/en/au/population-of-leonora.html

exidy··on Ask HN: “Git” for Microsoft Office?
Using Office 365 SharePoint and the latest versions of the native apps.
exidy··on Ask HN: “Git” for Microsoft Office?
The above is true, but there are caveats. Under the hood, Office is constantly saving back to Sharepoint and trying to merge changes. If it can't merge changes it will simply alert the user and give the option of abandoning their changes or saving them locally for manual merge later.

In my experience, merging seems to fail more often with Excel and PowerPoint than Word, but even in Word applying doc-wide changes (e.g. change of language) while someone else edits usually fails.

For sequential editing it works fine and keeps an automatic version history.

exidy··on AWS services to avoid
Terraform is "cloud agnostic" in the same way the Latin alphabet is "language agnostic."
exidy··on AWS services to avoid
> Support doesn't officially support third-party products

This is not entirely correct. "AWS Support Business and Enterprise levels include limited support for common operating systems and common application stack components" as documented here: https://aws.amazon.com/premiumsupport/faqs/ under "Third-party software"

exidy··on AWS Session Manager: less infrastructure, more features
The instances establish an outbound connection to the API SSM API, so as long as they can hit that, Session Manager will work.

Connectivity from a private subnet to the AWS API could be (a) NAT gateway (b) HTTP proxy (c) PrivateLink VPC endpoint.

exidy··on Cultural Etiquette Around the World
The section on Australia is not bad although seems a little dated. But thumbs up is not a rude gesture and "i'm stuffed" means either worn out or full, depending on context. Definitely not pregnant.
exidy··on A History of Visa
Don't forget Navitaire, the darling of LCCs. While they were acquired by Amadeus in 2015, their technology is quite separate.
exidy··on I just had over a thousand Euros stolen and Revolut is siding with the thief
Visa/Mastercard use a DMS or dual-message system that is basically a digitisation of the paper-based "click-clack" machines, possibly with a phone-based pre-authorisation.

The first message is the auth which comes online. This can only be accepted or declined. Once it has been accepted the value of the transaction is reserved against the credit limit but no movement of funds takes place. The issuing bank can remove the auth manually, but this just releases the credit, it has no impact on what happens next.

The transactions are posted to the account in overnight batch, during which the card system will attempt to match the pending auths and remove them. Some transactions (such as recurrent ones) will have no matching auth. There is no opportunity at this stage to "reject" a transaction, the batch is applied or it isn't. The issuing bank will typically get or more batches per BIN.

The dispute process at this point involves the issuing bank (Revolut) issuing a chargeback against the acquiring bank, which triggers a process during which each bank has certain timeframes to reject or accept the chargeback. So from this standpoint Revolut is basically following standard process.

exidy··on What is the Boeing 737 Max Manoeuvring Characteristics Augmentation System?
The plane announces "priority left/right" and the pilot whose input is being ignored gets an indicator on their display.
exidy··on What is the Boeing 737 Max Manoeuvring Characteristics Augmentation System?
Conflicting inputs are handled by averaging and an audible "DUAL INPUT" cockpit warning. In the case of AF447, the co-pilot used his "Priority Takeover" button which meant only his control inputs were in effect.
exidy··on China orders its airlines to suspend use of Boeing 737 Max aircraft
The 737 and 757 (and 707 and 727) all have exactly the same fuselage diameter, the 757 is merely longer. Seat pitch is determined by the airline.

I agree with you about the re-engining though. Seems Boeing might have pushed the 737 airframe one generation too far.

exidy··on Airbus will stop building the A380 in 2021
I very much doubt this is true. Just as a sanity check, the A380 has slightly more than double the fuel capacity (320 kL vs 156 kL) of the A350, and carries twice as many people.

At least at maximum fully loaded range, the fuel per seat is going to be very close. The problem starts when you're unable to fill the plane.

exidy··on Singapore Weighs Fate of Its Brutalist Buildings
I really cannot get my head around this comment. Are you referring to one of the few (only?) cities on earth that caps the total number of vehicles on the road[1]? That has more urban green space than Sydney, Sacramento or Vancouver[2]? That has built 200 km of subway in 30 years[3]?

I am not a citizen of Singapore but I am a resident. There are plenty of valid criticisms to be made but I don't recognise the city you are describing. I feel perhaps you never stepped out of River Valley.

[1] https://en.wikipedia.org/wiki/Certificate_of_Entitlement

[2] https://www.straitstimes.com/singapore/environment/not-a-con...

[3] https://en.wikipedia.org/wiki/Mass_Rapid_Transit_(Singapore)

exidy··on Ask HN: Online banks where I can open account worldwide?
You got my hopes up, but the TW borderless bank doesn't give you local SG bank account details (yet?). SGD is a supported currency of course.
exidy··on FAA Issues Boeing 737 AOA Directive After Lion Air Crash
It didn't secretly average inputs. The plane gave alerts both visual and audible (DUAL INPUT) that the pilots were providing conflicting inputs. I agree that the force feedback of the Boeing FBW system is better, but the pilots should have understood the alerts provided, and either communicated or made use of their override switches.

Solving the problem by ignoring one of the pilots would be an interesting engineering problem. How do you choose?

exidy··on Secure Access to 100 AWS Accounts
Hi there. I'm confused by your statement that "The integration guide recommends connecting the identity provider to each AWS account ..."

This used to be the way Okta recommended integrating to AWS, but in the guide you linked[1] they are using pretty much exactly the same approach you did - authentication to an identity account (ops account in your terminology) then assume-role into the target account.

I can't see any major differences between the standard Okta approach and the way you outlined in your blog. Could let me know if I missed something?

[1] https://support.okta.com/help/servlet/fileField?retURL=/help...

exidy··on Grab is acquiring Uber's SE Asia business
My experiences in PH has been along the same lines as yours, although not as dramatic. Uber works well as long as your driver can get to you. Manila's infamous traffic jams can result in a driver only 1 km away taking over half an hour to get to you.

I have never had a successful ride with Grab there. Rides are accepted, then simply cancelled some time later with no explanation, even when waiting at an official Grab pickup point.

exidy··on How Nike Avoids Paying Taxes in Australia
I agree that corporate tax avoidance is a problem and needs to be addressed on a global basis.

But as an Australian, I think we're missing the elephant in the room. We hold up these prominent brands like Nike and Apple, but ignore the fact that they are products designed and manufactured elsewhere. All we do in Australia is open the shipping container and distribute the goods to stores. Very little value is added in Australia. Regardless of tax changes, the tax revenue from simple distribution is always going to be low.

If we want to improve our corporate tax revenue, we need to create things in Australia, whether that's manufacturing, software, services or whatever.

exidy··on The MacBook Air: A Decade’s Worth of Legacy
I don't have a problem with the feel of the "scissor v2" keyboard on the 2017 MBPs. It's reliability and robustness is an open question though.
exidy··on The MacBook Air: A Decade’s Worth of Legacy
I used a mid-2013 MBA as my main work machine for 4 years and loved it. I also hoped for an updated MBA. But what would an updated MBA look like? Let's keep the 13.3 inch screen and full size keyboard, and:

  * Upgrade the screen to a retina display
  * Shrink those old-fashioned bezels
  * Integrated GPU only is fine
  * Update the 2 USB ports to USB-C/Thunderbolt 3 with power delivery
  * Current generation CPU
  * Keep the weight about the same
We've just built the 2-port MacBook Pro. (w/out touchbar). It's slightly less wide and deep than the MBA, thinner overall than the MBA's thickest point and a mere 20 grams heavier.

Of course it is somewhat more expensive than the MBA, but you cannot expect upgraded technology for free.

tl;dr Apple did an "upgraded MBA" when they bifurcated the MBP line, and nobody noticed.

exidy··on Airbus A380, Once the Future of Aviation, May Cease Production
The Airbus competitor to the 767 is the not the A350, it is the A330, which is ubiquitous outside of NA in the medium haul market. It has been an extremely successful plane for Airbus and will likely continue to be so with the A330neo.

While each company's offerings overlap somewhat, the A350 is a substantially larger plane and competes with the 777.

Widebody twin 2-class capacity (variants):

  767  | 216 / 261 / 296
  A330 |       246 / 300
  787  |       242 / 290 / 330
  A350 |                   325 / 366
  777  |                   313 /     / 396
  777X |                         365 / 414
exidy··on As of today, no US passenger airlines operate the Boeing 747
An A380 has about 1,400 kN available from its four engines. A twin engine A380 would need two engines developing at least 650-700 kN just to get off the ground. For reference, the GE9X being developed for the 777X develops 470 kN.

To make things more complex, there are regulations that require an aircraft to be able to continue takeoff should one engine fail. To match the thrust available of an A380 on 3 engines would require nearly 1000 kN of thrust from a single engine, way beyond current commercial jet engine technology.

exidy··on As of today, no US passenger airlines operate the Boeing 747
This is technically true, but in practice planes are designed for or or two seating configurations. For example you're always going to have wider seats in an A320 than a 737 because no airline is going to configure their 737s 5-across.

To the best of my knowledge, no airline has configured 787 economy anything other that 9 across. There's not actually a direct comparison to Airbus, the A330 is slightly narrower but is usually configured 8 across, whereas the A350 is slightly wider and is also usually configured 9 across.

So as a general rule, and subject to exceptions such as the proposed 11-across A380, Airbuses will have wider seats in economy than Boeings.

exidy··on As of today, no US passenger airlines operate the Boeing 747
Yes, the A380 has the same ~6,000 ft equivalent cabin pressure as the 787, compared to older jetliners that maintain ~8,000 ft.
exidy··on Apple acquires Buddybuild
Nevercode (formerly GreenhouseCI) does iOS and Android.

https://nevercode.io/

exidy··on Airbus ready to axe A380 if fails to win Emirates deal
What do you mean "started using the A330" ? It has been Qantas's go-to medium-haul airliner more than 10 years, long enough they they've all been refurbished recently with "A380 like" interiors.
exidy··on 'iHac Pro' vs. iMac Pro
It's pretty easy these days, mainly thanks to Clover[1] getting so good at pretending to be a real Mac. Even to the point of doing major OS upgrades (e.g. 10.12 -> 10.13) using only the native installer.

[1] https://sourceforge.net/projects/cloverefiboot/

exidy··on Ask HN: Flexible, lightweight build automation/CI tool?
Buildkite is my go-to CI in my professional work as well. The hybrid model (the master is SaaS, but you bring your own agents) works so well both from a cost-efficiency perspective, and also when working with enterprises who don't like builds occurring on machines they don't control.
exidy··on AWS Single Sign-On
I have successfully integrated Okta SSO to SSH via Hashicorp Vault, using it as a SSH CA to issue short-lived SSH certificates.
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