Sqlite

[Tobias Pankrath via Digitalmars-d-learn]

On Sunday, 25 January 2015 at 18:15:21 UTC, Paul wrote:
> I'd like to vary the query based on input but if I try to move 
> the string out of the sqlite3_exec call like this:
>
> string sqlStatement = "CREATE TABLE people(id INT PRIMARY KEY 
> NOT NULL, surname TEXT NOT NULL);";
> result = sqlite3_exec(db, sqlStatement, &aCallback, null, &msg);
>
> ...it won't compile:
>
> Error: function etc.c.sqlite3.sqlite3_exec (sqlite3*, 
> const(char)* sql,...
> is not callable using argument types (sqlite3*, string,...
>
> I can assign using:
>
> const char *sqlStatement = "CREATE TABLE...
>
> So how do I get a constant character pointer that can be 
> modified at runtime?
>
> Paul

Only string literals convert to const(char)*, because only for 
them it is guaranteed that they are null terminated. For 
everything else use toStringz.