Coworker and me were just thinking if this (or similar syntax) would be nice to have in Delphi:

Coworker and me were just thinking if this (or similar syntax) would be nice to have in Delphi:

car := TCar.Create
begin
Name := 'Chevrolet Corvette';
Color := TColors.Yellow;
end;

Edit: After pointing out this might lead to code defects because begin end can be used regardless this feature here is another proposal (similar to how Oxygene does it):

car := TCar.Create(
Name: 'Chevrolet Corvette',
Color: Colors.Yellow,
MaxSpeedKm: 300
);

With a ctor that has an argument:

car := TCar.Create('Chevrolet Corvette'; // <- semicolon
Color: Colors.Yellow;
MaxSpeedKm: 300
);


Suggestion by Eric Grange - like the original one but reusing the with to make it safe against issues using begin:

car := TCar.Create
with
Name := 'Chevrolet Corvette';
Color := Colors.Yellow;
MaxSpeedKm := 300
end;

Ctor with parameter:

car := TCar.Create('Chevrolet Corvette')
with
Color := Colors.Yellow;
MaxSpeedKm := 300;
end;

Similar to how since C# 3.0 you can initialize objects (see http://csharp.net-tutorials.com/csharp-3.0/object-initializers/)

or Oxygene: https://docs.elementscompiler.com/Oxygene/Members/Constructors/ -> "Extended Constructor Calls"

This is only allowed on a constructor call - that is not a with equivalent

Edit:

Here are the rules:
1) only assignments (or similar syntax with a colon like in c# or an equals sign like for default values in delphi or global variable initialization) allowed
2) only publicly accessible properties of the created objects are allowed on the left side of the expression
3) right side of the expression can be any expression compatible to the left side but not a member of the created instance