请问这个函数如何让DELPHI制作成DLL让其它语言调用？
这是字符串相似比较的代码，我想问问怎样制作成DLL让其它语言调用？
function EditDistance(s, t: string): integer;
var
d : array of array of integer;
i,j,cost : integer;
begin
{
Compute the edit-distance between two strings.
Algorithm and description may be found at either of these two links:
http://en.wikipedia.org/wiki/Levenshtein_distance
http://www.google.com/search?q=Levenshtein+distance
}
//initialize our cost array
SetLength(d,Length(s)+1);
for i := Low(d) to High(d) do begin
SetLength(d[i],Length(t)+1);
end;
for i := Low(d) to High(d) do begin
d[i,0] := i;
for j := Low(d[i]) to High(d[i]) do begin
d[0,j] := j;
end;
end;
//store our costs in a 2-d grid
for i := Low(d)+1 to High(d) do begin
for j := Low(d[i])+1 to High(d[i]) do begin
if s[i] = t[j] then begin
cost := 0;
end
else begin
cost := 1;
end;
//to use "Min", add "Math" to your uses clause!
d[i,j] := Min(Min(
d[i-1,j]+1, //deletion
d[i,j-1]+1), //insertion
d[i-1,j-1]+cost //substitution
);
end; //for j
end; //for i
//now that we've stored the costs, return the final one
Result := d[Length(s),Length(t)];
//dynamic arrays are reference counted.
//no need to deallocate them
end;
[解决办法]
string改为Pchar，stdcall调用方式
[解决办法]
新建一个dll工程file->new->other->DLL wizard
把你代码全部移到dll里面，然后Project->Compile/Build就OK了
dll里面大概像这样:
uses ...;
function EditDistance(s, t:PChar):integer;stdcall;
begin
...你的代码
end；
exports
EditDistance;
begin
end.
