type casting to a dynamic array

Question

Given the following:

Type
  TSomeTypeArray = array of SomeType;

var
  anArray: array of SomeType;

function GetSomeTypeArray: TSomeTypeArray;

I want to write anArray = GetSomeTypeArray(); but the compiler does not like it. Without changing the type of anArray or the return type of GetSomeTypeArrayhow can I typecast TSomeTypeArray to array of SomeType?

Dan Bartlett · Accepted Answer · 2011-04-24 10:18:51Z

6

You could typecast the left hand side of the assignment:

TSomeTypeArray(anArray) := GetSomeTypeArray();

answered Apr 24, 2011 at 10:18

Dan Bartlett

8267 silver badges8 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user1249190 Over a year ago

Left hand side typecast <- this blows my mind so much

Jim McKeeth · Accepted Answer · 2011-04-12 19:46:52Z

3

You can't. You need to declare anArray as of type TSomeTypeArray, then it should work.

Alternatively, you could store the result into another array of type TSomeTypeArray then call SetLength on anArray to the length of the returned array. And finally loop through the two arrays setting the elements of anArray to the elements of the returned array.

answered Apr 12, 2011 at 19:46

Jim McKeeth

38.8k25 gold badges126 silver badges201 bronze badges

1 Comment

Jim McKeeth Over a year ago

Yeah, sorry. AFAIK that is the only way, and since no one else piped in with an alternative . . .

Collectives™ on Stack Overflow

type casting to a dynamic array

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related