At least some games in the Arma series have also used a copy protection that messes with gameplay if it judged the game to be pirated. I don't know if it used tricks to trip crackers, though -- Wikipedia mentions intentional errors on optical media that didn't get passed on by disc copy software.
Should one use the result type for handling errors or exceptions or both? What's the rule in F#?
When should you prefer immutability over mutability since both are possible in F# and it probably has a measurable impact on performance?
When should you use objects instead of records or unions in F#?
Since mutability is possible, any reason to not allow an explicit return or continue? It makes certain code patterns much less nested and easier to read.
I recently had to script reading a large Excel XLSB file. Using pyxlsb it took about two minutes. I found an alternative library with significally better performance - python-calamine, but this one reads all the data to memory consuming GBs of RAM, so was a no starter. Then I tried PyPy and miraculously the same script with pyxlsb takes 15 seconds.
Years ago I was discouraged that there is a lack of a grid component like WPF's Grid or Delphi's TGridPanel. Something that I can specify the number of rows/cols and their sizing. Has this changed since? Or perhaps this is achievable nowadays with (nested?) TFlowPanels?
If i understand what you mean, i don't think you need TFlowPanel at all and you can just use a regular TPanel (for small grids) or TScrollBox (if you want scrollbars) and modify ChildSizing with Layout set to cclLeftToRightThenTopToBottom and ControlsPerLine to the number of columns you want. You can also set the spacing properties to allow space between the controls and/or the Enlarge/Shrink Horizontal/Vertical properties to force children use the full width/height. I did a quick test[0] and seems to work fine. Note that as this uses the controls' automatic sizing, the controls will always be resized to match their autosize, however you can use the Constrains property to set a minimum (or maximum) size and/or use a TPanel for a "cell" so you can specify whatever size you want (or have cells with multiple controls).
For scripts I use Python, but I like to use PHP for short quick scripts when a database is involved since all it takes is to install php and php-pdo to have a consistent api for db access to get started with, which for python is not the case.
But from time to time I am reminded how bad PHP and outright dangerous can be. Just the other day I had an array like this: ["123"=>"foo", "321" => "bar"] on which I used array_keys expecting to get ["123", "321"] as a result. Surprised why my script was not working the way it was supposed to I found out that the result was actually [123, 321] instead. Yep, PHP casts strings to numbers in this case when it can. I will hit a "gem" like this every now and then, there are plenty of such dumb things scattered in PHP that will bite you the least expected way that makes me stop and think to use something else.
pdo is a common interface layer for databases for php, like jdbc in java or ado.net in C# so I can use the same api for any supported database.
In python technically dbapi standard exists for the same task, but the driver apis annoyingly vary so much between themselves that if i have to i go with sqlalchemy, but it's no longer a lightweight solution
Haven't touched Blazor in 2 years. In the context of blazor server, what's the recommended pattern for state management?
Does it make sense to use MVVM (e.g. via MVVM Community Toolkit for source generated observable properties etc) or plain C# objects would suffice with manually calling StateHasChanged() whenever necessary? (I guess that since rerenders are driven by DOM events the situations where manually calling StateHasChanged() is quite low)
I've been using blazor since release in 2019 and can count on one hand the amount of times a call to StateHasChanged() was used and actually needed when doing a peer review
Most of the time I've seen that function used it was due to improperly written asynchronous code.
It's unlikely to happen. 10-20 years of use for many of those community generated functions is a lot to break. It may happen eventually, but I wouldn't count on it.
Question to those familiar with IPv6. My company has /24 IPv4 PI blocks. We are not a LIR. Can I request a /48 or larger IPv6 prefix from my sponsor LIR (what is the largest IPv6 prefix that can be obtained this way?) Can such IPv6 prefix (not being a LIR) be further distributed to customers? (e.g. we offer some internet access) - afaik there were some restrictions when not being a LIR. I am not sure what the current state of IPv6 policy is.
If you're talking about the RIPE region, then;
- Can I request a /48 or larger IPv6 prefix from my sponsor LIR -> Yes. Something bigger than a /48 might be hard, but /48 shouldn't be any problems.
- Can such IPv6 prefix be further distributed to customers? -> No. A IPv6 PI assignment can only be used by yourself and your own infrastructure and not assigned to customers[0].
Other RIRs will have the information on their website, or your sponsoring LIR will be able to answer any questions :)
Thank you.
Just to make things clear, customer from section 7 also equals end user? That is, if I were given for example a /48 from a sponsor LIR then I am forbidden to divide that and delegate resulting prefixes via DHCP/PPPOE to end user CPEs to whom I want to simply provide dual stack internet access?
Flutter is different as it is 100% OSS so if Google cancels it, its development could theoretically be continued outside of Google. Of course, this depends on the presence of enough demand for that. Mozilla has laid off their full time Rust staff (including some people whose actual responsibility was different but they still contributed to the Rust compiler) and the Rust project survived. Instead these people got hired by companies like Amazon and Futurewei. Some are less involved in Rust now, some return. Some risk remains though, as if nobody is using Flutter, nobody will keep it alive.
Is OpenBSD still largely single-threaded or have there been SMP improvements in the network stack over the years?
The feature set OpenBSD has is impressive, but is there a large gap in networking perf compared to Linux/FreeBSD?
The person you're responding to was asking about network performance. I imagine specifically regarding pf (packet filter, the firewall component).
To the grandparent: PF is still single threaded. If you had performance issues with that before you may still have them, but CPU improvements over time may have negated that impact. It's worth trying it out again.
