Re: [Gambas-user] Setting at zero more byte in a file by "Byte[]"
Hello Emil, no, it's no good, because I obtain 41 02 04 00 00 00 00 . again. Minisini's solution is that right. --> buff.Write(stream) But thank you. Bye Vuottt -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
Re: [Gambas-user] Setting at zero more byte in a file by "Byte[]"
When you write For Each b In buff b = 0 Next you get a copy of each byte in the variable 'b', not a reference. Instead, you can do something like this: For i = 0 To 3 buff[i] = 0 Next /Emil 2012/4/8 Ru Vuott > Hello, > > I'ld like to set at zero more subsequent byte (e.g. the FIRST four) in a > file, using that code: > > *** >Public Sub Button1_Click() > > Dim aFl As File > Dim buff As New Byte[4] > Dim b As Byte > > aFl = Open "/tmp/my_file" For Write > > For Each b In buff > b = 0 > Next > >Write #aFl, buff As Byte[] > > aFl.Close > >End > *** > > But I obtain a "strange" result. In fact if I control the result of file > by an exad. editor, I see the byte are: > > 41 02 04 00 00 00 00 .. > > I have three "strange" byte (41 02 04) end 'then' the four zero ! > If I want to set at zero five byte, those three exad. number will be: 41 > 02 05 It seems it memorized and wrote the array pointer instead of its > contents (the four zero) ! > > Isn't it ? > > Vuott > > > -- > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > ___ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user > -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
Re: [Gambas-user] Setting at zero more byte in a file by "Byte[]"
On Sun, 08 Apr 2012, Ru Vuott wrote: > Hello, > > I'ld like to set at zero more subsequent byte (e.g. the FIRST four) in a > file, using that code: > > *** > Public Sub Button1_Click() > > Dim aFl As File > Dim buff As New Byte[4] > Dim b As Byte > >aFl = Open "/tmp/my_file" For Write > >For Each b In buff > b = 0 >Next > > Write #aFl, buff As Byte[] > >aFl.Close > > End > *** > > But I obtain a "strange" result. In fact if I control the result of file by > an exad. editor, I see the byte are: > > 41 02 04 00 00 00 00 .. > > I have three "strange" byte (41 02 04) end 'then' the four zero ! > If I want to set at zero five byte, those three exad. number will be: 41 02 > 05 It seems it memorized and wrote the array pointer instead of its > contents (the four zero) ! > > Isn't it ? > > Vuott > > -- > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > ___ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user If you Write #File, aArr As Array then Gambas has to be able to aArr = Read #File As Array the data back. To do so, the type of array and its size must be available and thus are written before the actual data. You may want to use the Write #File, "\x00\x00\x00\x00", 4 syntax. Haven't tried but should work. Regards, Tobi -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
[Gambas-user] Setting at zero more byte in a file by "Byte[]"
Hello, I'ld like to set at zero more subsequent byte (e.g. the FIRST four) in a file, using that code: *** Public Sub Button1_Click() Dim aFl As File Dim buff As New Byte[4] Dim b As Byte aFl = Open "/tmp/my_file" For Write For Each b In buff b = 0 Next Write #aFl, buff As Byte[] aFl.Close End *** But I obtain a "strange" result. In fact if I control the result of file by an exad. editor, I see the byte are: 41 02 04 00 00 00 00 .. I have three "strange" byte (41 02 04) end 'then' the four zero ! If I want to set at zero five byte, those three exad. number will be: 41 02 05 It seems it memorized and wrote the array pointer instead of its contents (the four zero) ! Isn't it ? Vuott -- For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 ___ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
