The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Software Development’ Category

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Happy Day of the Programmer!

Posted by jpluimers on 2019/09/13

Enjoy your day and [WayBack] Good Questions — Geek&Poke; [WayBack] The art of programming — Geek&Poke

 

 

 

–jeroen

Related: Happy Day of the Programmer! 2018

Posted in Development, Software Development | Leave a Comment »

What went wrong with the IT industry? Some interesting thoughts on other industries coping with complexity…

Posted by jpluimers on 2019/09/12

[WayBack] What went wrong with the IT industry? Well, maybe the same as what happened in other industries that deal with complexity. We maybe beat ourselves up to… – James Coplien – Google+ is on my list of videos to watch.

–jeroen

Read the rest of this entry »

Posted in Development, Software Development, Systems Architecture | Leave a Comment »

Delphi / Stefan Glienke: I looked into IntroSort … and the Microsoft implementation … Here is my current implementation

Posted by jpluimers on 2019/09/12

For my link archive: [WayBack] Delphi / Stefan Glienke: I looked into IntroSort … and the Microsoft implementation … Here is my current implementation

[WayBack] Delphi IntroSort by Stefan Glienke

–jeroen

https://bitbucket.org/snippets/sglienke/64LG6b/introsort

 

Posted in Delphi, Development, Software Development | Leave a Comment »

C# (and presumably Delphi): why parameterless record constructors are absent

Posted by jpluimers on 2019/09/12

For my link archive.

Full text at: [WayBack] … why the Delphi language does not allow parameterless constructors… – David Heffernan – Google+

Abstract:

+Stefan Glienke deleted his post about parameterless record constructors, presumably due to all the off topic comments.

…

.net at CLR level does allow parameterless constructors on structs. But the C# language bans them: https://msdn.microsoft.com/en-us/library/saxz13w4.aspx

Jon Skeet posted an answer on SO way back in 2008 on this topic: http://stackoverflow.com/a/333840/ From that answer:

—-
The CLR allows value types to have parameterless constructors, but C# doesn’t. I believe this is because it would introduce an expectation that the constructor would be called when it wouldn’t. For instance, consider this:

MyStruct[] foo = new MyStruct[1000];

…
—-

My guess is that Embarcadero decided to ban parameterless constructors on Delphi records for the same reason. Or perhaps they just copied the rules from C# without realising that the CLR supported parameterless struct constructors.

References:

--jeroen

Posted in .NET, C#, Delphi, Development, Jon Skeet, Software Development | Tagged: | Leave a Comment »

delphi: you can only access protected identifiers from parent classes in your own “Self” scope, or when you are “friends” with your parent (so you are in the same unit)

Posted by jpluimers on 2019/09/11

An interesting question from a while back: [WayBack] delphi – Should a descendant class’ method’s variable that is identical to Self, have access to its ancestor’s protected methods? – Stack Overflow

In unit A:

TParent = class
protected
  function DoSomething: TParent;
end;

In unit B:

TChild = class(TParent)
public
  procedure DoAnotherThing;
end;

implementation

procedure TChild.DoAnotherThing;
begin
  DoSomething.DoSomething
end;

…

This won’t compile, throwing a

cannot access protected symbol TParent.DoSomething

The kicker here is that the error message makes you think you are operating in Self context, but you are not as you are calling DoSomething.DoSomething where only the first DoSomething is in your Self context, but the second .DoSomethingis in the context of any TParent instance trying to access a public identifier.

Stefan Glienke posted [WayBack] a more elaborate answer explaining some workarounds.

–jeroen

Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »

MS Paint IDE

Posted by jpluimers on 2019/09/10

Oh boy:

Ditch IDEs like Intellij and glorified text editors like Eclipse, and switch to a real IDE, MS Paint.

It wraps around MS Paint.

You can get it at [WayBack] MS Paint IDE and source code at [WayBack] GitHub – RubbaBoy/MSPaintIDE: Programming in MS Paint.

A long thread discussing it, including a tutorial: [WayBack] Resource – Programming in MS Paint [UPDATED] | SpigotMC – High Performance Minecraft

–jeroen

Posted in Development, Fun, Software Development | Leave a Comment »

Is there a way to use the JVCL’s TJvXxxAppStorage to store float values as s…

Posted by jpluimers on 2019/09/10

For my link archive: [WayBack] Is there a way to use the JVCL’s TJvXxxAppStorage to store float values as strings (e.g. “10.152”) rather than hex dumps and also control the decimal s… – Thomas Mueller (dummzeuch) – Google+

Relevant sources:

–jeroen

 

Posted in Delphi, Development, Software Development | Leave a Comment »

GitHub – slikts/js-equality-game: The Worst Minesweeper 💣 Ever

Posted by jpluimers on 2019/09/10

[WayBack] GitHub – slikts/js-equality-game: The Worst Minesweeper 💣 Ever:

It’s in response to claims like this one by the well-known author getify:

However, implicit coercion is a mechanism that can be learned, and moreover should be learned by anyone wishing to take JavaScript programming seriously. Not only is it not confusing once you learn the rules, it can actually make your programs better! The effort is well worth it.

You can play it on [WayBack] JavaScript Equality Table Game: Find out how well you know (or don’t know) the JavaScript == operator rules

It reminds me of the hilarious video on Wat – Destroy All Software Lightning Talk : Gary Bernhardt : Free Download, Borrow, and Streaming : Internet Archive 

Based on:

Via:

–jeroen

Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

What do the three arrow (“>>>”) signs mean in python?

Posted by jpluimers on 2019/09/10

When starting to work with Python, a lot of examples contain the >>> characters on the first line often followed by ... characters on continuing lines.

They are about two things:

  1. interactive Python sessions
  2. doctest

The answers in [WayBack] What do the three arrow (“>>>”) signs mean in python? give insight in the various Python versions and how they prompt.

References from them:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Jim Rohn: You’re The Average Of The Five People You Spend The Most Time With – Business Insider

Posted by jpluimers on 2019/09/09

Interesting point of view: [WayBack] Jim Rohn: You’re The Average Of The Five People You Spend The Most Time With – Business Insider

From quite a while ago, via [WayBack] Select your friends and working partners wisely! “You are the average of the 5 people you spend the most time with.” – Jim Rohn – Marjan Venema – Google+

–jeroen

Posted in Agile, Development, LifeHacker, Power User, Software Development | Leave a Comment »

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