var
A, B: string;
begin
A := 'A long string';
// Deep copy: Creates a new string and copies all the bytes from A
B := Copy (A, 1, Length (A));
// Shalow copy: only copies the reference and increments reference count
B := A;
----- Original Message -----
From: "Paul McKenzie" <[EMAIL PROTECTED]>
Sent: Wednesday, October 20, 2004 11:48 AM
Excellent thanks... I will go with my option B.
Regards
Paul McKenzie
SMSS Ltd.
Wellington
New Zealand
----- Original Message -----
From: Ross Levis
To: NZ Borland Developers Group - Delphi List
Sent: Wednesday, October 20, 2004 11:28 AM
Subject: Re: [DUG] String Copying
As someone pointed out recently, assigning a string to another string only
copies 4 bytes, no matter how big the string is. Only the memory location
is copied unless the 2 references to the string go out of scope, in which
case the string is copied in it's entirety. The Copy command, however, will
copy each byte of the string to a new memory location.
Ross.
----- Original Message -----
From: Kyley Harris
To: NZ Borland Developers Group - Delphi List
Sent: Wednesday, October 20, 2004 11:15 AM
Subject: Re: [DUG] String Copying
Not sure, but I get the feeling that writing a small test including a
timer and a loop will be the fastest answer ;)
Paul McKenzie wrote:
Is it much slower to copy part of a string "Copy(AStr, 2,
Lenght(AStr))" than it is to copy an entire string.
I am look at doing this sort of thing reasonably often - for up to
1000 strings.
Regards
Paul McKenzie
SMSS Ltd.
Wellington
New Zealand
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