Posted by jpluimers on 2020/05/21
Interesting course: [WayBack] Go: The Complete Developer’s Guide (Golang) | Udemy Master the fundamentals and advanced features of the Go Programming Language (Golang)
It covers:
–jeroen
Posted in Development, Go (golang), Software Development | Leave a Comment »
Posted by jpluimers on 2020/05/21
Almost 20 years old, but still a very nice read [Archive.is] David Korn Tells All – Slashdot.
Another funny story involving David Korn during the not-so open source times of Microsoft late last century: [WayBack] Korn Shell Story
–jeroen
Posted in *nix, *nix-tools, bash, bash, Development, History, Power User, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2020/05/21
From [WayBack] Why would the compiler generate a "E2018 Record, object or class type required" helper when I use a ToUpperInvariant (or any TStringsHelper call) on t… – Jeroen Wiert Pluimers – Google+:
Why would the compiler generate a
"E2018 Record, object or class type required"when I use a ToUpperInvariant (or any TStringsHelper call) on theTextproperty of aTEdit?Full failing code is at [WayBack] https://gist.github.com/jpluimers/b5e3684f725216622bdcb80bf5f10698
Failing line is this:
Edit1.Text := Edit1.Text.ToUpperInvariant; // the above line generates this error: // [dcc32 Error] MainFormUnit.pas(29): E2018 Record, object or class type requiredThis fails as well:
Edit1.Text := TStringHelper.ToUpperInvariant(Edit1.Text);Why would the compiler (in this case XE8) throw this error?
Note the workaround is simple:
var lText: string; begin lText := Edit1.Text; Edit1.Text := lText.ToUpperInvariant;My suspicion is that the
Editproperty is of typeTCaptionwhich istype string.Could it be that simple?
To which David Heffernan responded:
Yup, the issue is
TCaptionhas no helper. Pretty distressing.
Typed types are indeed different types. They have been there for a long time (to facilitate generating different type information so you can for instance hook up different property editors to TCaption (a typed string) or TColor (a typed integer).
It is explained at [WayBack] Declaring Types. but has existed since Delphi 1 or Delphi 2.
More on the implications is at [WayBack] pascal – Delphi Type equivalence and Type equality syntax – Stack Overflow.
–jeroen
Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 