Delete from file
Lorentzos Roussos: How can you delete from a file? Do i retain the cursor position and rewrite from there if a change is needed ?
Yes, you overwrite based on a saved seek position. The MQL file functions, don't offer a function for reducing the file size, so files can only grow, never shrink.
To reduce the file size, you would need to read all the data in, and then create a new file and delete the original file.
Fernando Carreiro #:
Yes, you overwrite based on a saved seek position. The MQL file functions, don't offer a function for reducing the file size, so files can only grow, never shrink.
To reduce the file size, you would need to read all the data in, and then create a new file and delete the original file.
Then a full rewrite is preferrable i guess . Thanks
How can you delete from a file ?
Do i retain the cursor position and rewrite from there if a change is needed ?