mdavidn

19 ms·

211.
by mdavidn 5y ago
If it does, then only with the built-in map. No CarPlay support.
212.
by mdavidn 5y ago
Lexus has models with a HUD. It was far less useful than I expected. It displays just a compass, digital speedometer, and indicators for cruise control and lane assist.
213.
by mdavidn 5y ago
Unlikely. The specific energy of jet fuel is more than 40 times that of batteries, and I don't see batteries improving by an order of magnitude. A jetpack would need 40 times more battery mass than fuel to produce the same thrust for t
214.
by mdavidn 5y ago
Starting with PostgreSQL 11, B-tree indexes can store additional "non-key" columns in the index. These are kept in the index alongside the sorted key columns. This can avoid expensive sorts in certain query plans. It's not pe
215.
by mdavidn 5y ago
You and I work on very different kinds of projects. I find myself fidgeting and squinting at the database far more when it fails to enforce a schema or provide ACID transactions.
216.
by mdavidn 5y ago
Projects to widen freeways face a similar diminishing return. The most value arises from the new capability. Each lane thereafter does not yield linearly increasing returns.
217.
by mdavidn 5y ago
A method that bills customers is not a “minor part” of the application. This is where automated integration tests can make the most difference. “It should not call the Stripe API if customer has credits remaining.”
218.
by mdavidn 5y ago
No. I write explicit tests on the boundaries, such that they would fail on any day of the week.
219.
by mdavidn 5y ago
A running joke in my family is my intentional mispronunciation of "subsequent" as "sub-see-quent" (similar to "sequence").
220.
by mdavidn 5y ago
One project had tests fail every Saturday and Sunday, near the organization’s fiscal week boundary. Ever since then, I have strived to hard-code all dates in test suites, choosing dates several decades in the future.
221.
by mdavidn 5y ago
I had only just recently heard of Thiebaud on HN: https://news.ycombinator.com/item?id=29430288
222.
by mdavidn 5y ago
How does the cost and availability of child care factor into this analysis?
223.
by mdavidn 5y ago
Third-party JavaScript running on a domain could similarly steal passwords typed into that domain.
224.
by mdavidn 5y ago
Postgres implicitly creates a transaction for any query modifying data outside of one. Transactions in MVCC are relatively cheap. The main resource of contention is a global txid that can disastrously wrap around if autovacuum is disabled.
225.
by mdavidn 5y ago
If a job fails, the connection to the database will timeout. Postgres will rollback the transaction, which releases row locks, freeing a job to be retried. Of course, the database client and server together form a distributed system. The cl
226.
by mdavidn 5y ago
I don't eat meat, and I encourage friends and family to avoid it. Livestock production is surprisingly bad for the environment. Cows are particularly bad, consuming somewhere around 25 times more calories and 4 times more protein from
227.
by mdavidn 5y ago
The Federal Reserve is not the US Treasury. The Fed buys these mortgage-backed securities with money printed out of thin air. Likewise, the dollars disappear again as the mortgages mature. If the securities default, everyone who owns dollar
228.
by mdavidn 5y ago
A one-day outage in December can be crippling for retail. I don't doubt that many functions are difficult to failover, but a bare-bones minimum seems straightforward. For example, evidence of delivery is append-only and only needs to b
229.
by mdavidn 5y ago
IANAL, but the value of a service like DocuSign is being a third-party whose records the counterparties cannot manipulate.
230.
by mdavidn 5y ago
The NES version is quirky, as your link points out. It's best described as an 8-sided die, with rolls for 8 or the previous piece triggering a single reroll. The probability of the next piece being an "I" do not increase afte
231.
by mdavidn 5y ago
The author overlooked the most mind-bending feature of Ruby blocks, the thing that makes them so very different than lambdas in other languages: Blocks can return from the enclosing function. def process collection.each do |element|
232.
by mdavidn 5y ago
File formats like PDF contain a script that must be interpreted in order to read the image.
233.
by mdavidn 5y ago
A leap second would be a change "less than 3 hours," so the job should still run according to the cited Debian man page. Google's NTP servers smear leap seconds over an entire day, so UTC may appear continuous despite leap se
234.
by mdavidn 5y ago
CST and CDT are known as a single time zone, America/Chicago, in the tz database. The tz database can convert UTC times into local Chicago time. It even accommodates historic changes in DST law, like changes to the start date in prior
235.
by mdavidn 5y ago
The majority are Treasury securities but the Fed has also purchased other assets under quantitative easing, like mortgage-backed securities.
236.
by mdavidn 5y ago
Well, strictly speaking, the money is backed by the promise to repay the bond with interest. At that point in the future, the money will disappear from existence.
237.
by mdavidn 5y ago
If the profit margin is 2% but it increases to 3%, that’s a 50% increase in profit.
238.
by mdavidn 5y ago
Coal plants release ash into the air and groundwater continuously, in the course of normal operation. This ash is around five times more radioactive than soil.
239.
by mdavidn 5y ago
I think it was only a BGP issue. The DNS servers apparently shared the same peering routers as the rest of Facebook's infrastructure. Everyone focused on DNS because that's the first sign of failure to an end user.
240.
by mdavidn 5y ago
Sounds like automation deployed a configuration update to most of Facebook's peering routers simultaneously. Something similar brought down Google in 2019.

More ›