Node:SetLength, Next:SetType, Previous:SetFileTime, Up:Reference
procedure SetLength (var S: String; NewLength: Integer);
SetLength
explicitly assigns a new length NewLength
to
the string parameter S
. The contents of the string is
not changed; if the operation increases the length of the
string, the characters appended at the end are undefined.
SetLength
is a Borland Delphi 2.0 extension.
program SetLengthDemo; var S: String (26); begin S := 'Hello, world!'; SetLength (S, Length ('Hello')); WriteLn (S); { 'Hello' } SetLength (S, 26); WriteLn (S); { 'Hello, world!(%$xy"!#&~+(/]' } { undefined characters ^^^^^^^^^^^^^^ } SetLength (S, 42); { The overflow is *not* (yet) detected. } WriteLn (S); { This might cause a runtime error or crash. } end.