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Posted by jpluimers on 2019/12/27
For my link archive.
Most offer live chat, but not all of them offer that around the clock.
–jeroen
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Posted by jpluimers on 2019/12/26
The underlying question at [WayBack] … Does anyone know of any array sort method similar to this for Delphi (with the two array parameters, key and value with a comparer method) … – Ugochukwu Mmaduekwe – Google+ was basically this:
Why is there no
class procedure TArray<T>.Sort(Keys: array of T; var Values: array of T; const Comparer: IComparer<T>); overload;
From my answer:
No it is not there as the method that does the actual sort does not accommodate for it:
class procedure TArray.QuickSort<T>(var Values: array of T; const Comparer: IComparer<T>; L, R: Integer);You could write a helper for it so that similarly to C#, they all end in
public static void Sort(Array keys, Array items, int index, int length, IComparer comparer)In case you need to look at the external TrySZSort: https://github.com/dotnet/coreclr/blob/master/src/classlibnative/bcltype/arrayhelpers.cpp#L268
In other cases, C# uses an IntrospectionSort implemented at
Or you could try to use this overload of TArray.Sort Method (array of T):
class procedure Sort<T>(var Values: array of T; const Comparer: IComparer<T>); overload;It was introduced in Delphi 2009.
Your Comparer then needs to extract the key of each element and implement IComparer<T>.
However, this will never sort the
Keysarray.
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/12/26
Very similar to “you get the best ideas while sleeping“:
[WayBack/Archive.is] Sasha Laundy on Twitter: “The best debugger ever made is a good night’s sleep.”
Via: [WayBack] So true it hurts – CodeProject – Google+
For me, taking a shower and contemplating during a commute are good debuggers too. But sleeping is still the best.
Hope you enjoyed Christmas, good luck on your debugging ventures!
–jeroen
Posted in Debugging, Development, Fun, Quotes, Software Development | Leave a Comment »
Posted by jpluimers on 2019/12/25
For my archive: [WayBack] Bummer, a big showstopper with Berlin 10.1.2: an object with an indexed property getter crashes the debugger! Please +Marco Cantù we need a fix for this… – André Mussche – Google+
When debugging and adding a watch on a property:
It was fixed in 10.2 Tokyo: [RSP-16522] property getters with index can’t be viewed in the debugger and crashes! – Embarcadero Technologies
–jeroen
Posted in Delphi, Delphi 10.1 Berlin (BigBen), Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/12/25
For my link archive: [Archive.is] Flexible and Economical UTF-8 Decoder.
Be sure to read the whole article there as the explanation of the initial algorithm is important and final algorithm is towards the end.
The foundation is a state machine combined with a lookup table to find the initial state and proceed to subsequent states.
Related (and reminder to check what David did):
–jeroen
Posted in C, C++, Delphi, Development, Software Development | 1 Comment »
Posted by jpluimers on 2019/12/24
When learning Python, one of the terms to get used to is Pythonic, basically shorthand for a loosely defined idiomatic Python way of writing code.
Some links to help you get a feel for this:
The language’s core philosophy is summarized in the document The Zen of Python (PEP 20), which includes aphorismssuch as:[51]
- Beautiful is better than ugly
- Explicit is better than implicit
- Simple is better than complex
- Complex is better than complicated
- Readability counts
…
the Python philosophy rejects exuberant syntax (such as that of Perl) in favor of a simpler, less-cluttered grammar. As Alex Martelli put it: “To describe something as ‘clever’ is not considered a compliment in the Python culture.”
…
“there should be one—and preferably only one—obvious way to do it”
Sometime, I am going to dig into learning how to write Pythonic code for merging and joining dictionaries (preferably those of namedtuple entities). Hopefully these links will help me with that:
–jeroen
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Posted by jpluimers on 2019/12/24
Some links to get this idea going, incomplete, as I have not yet included Domoticz or OpenHAB links:
Clockwise motion occurs when the sensor triggering sequence is either A->B->C, B->C->A or C->A->B. Counter clockwise is either A->C->B, C->B->A or A->C->B. C++ code checks the sequence in which the sensors are triggered to determine if the door is moving up (clockwise) or or down (counter clockwise). Revolutions Per Minute is easily determined by counting how often one of the sensors is triggered per second and multiplying by 60.
I will likely need:
When the Raspberry Pi reboots GPIO pins are reset to their default state. This can cause your garage door to open without you issuing a command. Please make sure you pick the correct pins so that you don’t accidentally have your garage door opening after a power loss.
The following pins are pulled HIGH (they output a 3.3 volt signal) on reboot:
- GPIO0/2
- GPIO1/3
- GPIO4
- GPIO7
- GPIO8
GPIO14 is configured as a Serial Transmit line, so avoid choosing that pin.
All other pins are pulled LOW (they have a 0 volt signal, same as GND).
If your relay triggers when the GPIO pin goes LOW, then pick a pin that starts out HIGH on reboot. If your relay triggers with the GPIO PIN goes HIGH then pick a GPIO pin that starts out LOW on reboot.
–jeroen
Posted in Development, Hardware Development, Hardware Interfacing, Raspberry Pi | Leave a Comment »
Posted by jpluimers on 2019/12/24
I don’t have enough time right now to elaborate on the code, so below is a an example of where I bumped into the very non-descriptive [WayBack/Archive.is] E2015: Operator not applicable to this operand type when using generics in Delphi.
Most have to do with comparing types (one of which is similar to comparing interfaces where you need to have a GUID in order to get an as comparison working, see Source: Delphi – Using FastMM4 part 2: TDataModule descendants exposing interfaces, or the introduction of a TInterfacedDataModule).
Like most post-Delphi 2007 language features in Delphi, generics still have rough edges. I doubt this will change anytime soon and I am not alone in this.
The documentation never got update to cover situations involving generics ([Archive.is] E2015 Operator not applicable to this operand type (Delphi) – RAD Studio), so basically this to show some examples you might bump into as well.
Note the code below usually is an indication of code-smell, as was the more elaborate situation I had to use it in. A long term solution for that code was to introduce more polymorphism.
A shorter term solution involves either the use of local variables or type-casting (for the latter, see [WayBack] delphi – Cannot compile constrained generic method – Stack Overflow)
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/12/23
Via [WayBack] Rianne Meijer on Twitter: “U hebt nog week om over te stappen van zorgverzekeraar, bij voorkeur naar eentje zonder omzetplafond Power to the patienten en de zorgverleners… “
[WayBack] Michel Portasse onTwitter: “Daarom:… “
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Posted by jpluimers on 2019/12/23
Een overzicht van alles wat ik via de Top2000 site en Twitter bij elkaar geschraapt heb.
Edit 20190228
Edit 20190229; wachttijden: [WayBack] Top 2000 Cafe | Beeld en Geluid
| Start | Eind | DJ | Sidekick/Producer | Sidekick | Nieuwslezer | ||||
|---|---|---|---|---|---|---|---|---|---|
| 8:00 | 9:00 | Jan-Willem Roodbeen | Jeroen Kijk in de Vegte | @JWRoodbeen | @jeroenkidv | Carmen Verheul | @carmenverheul | ||
| 9:00 | 10:00 | ||||||||
| 10:00 | 11:00 | Bart Arens | @BartRadio2 | ||||||
| 11:00 | 12:00 | ||||||||
| 12:00 | 13:00 | Gijs Staverman | @GijsStaverman | ||||||
| 13:00 | 14:00 | Matijn Nijhuis | @matijn | ||||||
| 14:00 | 15:00 | Rob Stenders | Caroline Brouwer | @robstenders | @radiocarol (toch niet op vakantie) |
||||
| 15:00 | 16:00 | ||||||||
| 16:00 | 17:00 | Ruud de Wild | Cielke Sijben
Georgina Gulsen |
Thijs Maalderink
Gijs Hakkert |
@ruuddewild | @CielkeSijben is vervangen door @GeorginaGulsen |
@OnwijsThijs @GijsHakkert |
||
| 17:00 | 18:00 | ||||||||
| 18:00 | 19:00 | Wouter van der Goes | @woutervdgoes | ||||||
| 19:00 | 20:00 | ||||||||
| 20:00 | 21:00 | Annemieke Schollaardt (vervangt Stefan Stasse) |
Nathan Tamis | @Annemiekeishere | @NathanTamis | Wouter Walgemoed | @wouwal | ||
| 21:00 | 22:00 | ||||||||
| 22:00 | 23:00 | Paul Rabbering | @paul_rabbering | ||||||
| 23:00 | 24:00 | ||||||||
| 0:00 | 1:00 | Leo Blokhuis | @LeoBlokhuis | Nachtlezer | |||||
| 1:00 | 2:00 | ||||||||
| 2:00 | 3:00 | Rick van Velthuysen | @rickvanv | ||||||
| 3:00 | 4:00 | ||||||||
| 4:00 | 5:00 | Frank van ’t Hof | @frankvanthof | ||||||
| 5:00 | 6:00 | ||||||||
| 6:00 | 7:00 | Emmely de Wilt | @EmmelydeWilt | ||||||
| 7:00 | 8:00 | Carmen Verheul | @carmenverheul |
Matijn’s quiz in de top 2000 tent:
Bronnen:
–jeroen
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The Wiert Corner - irregular stream of stuff 