08-31-2006
Pls give me some advice
hi everyone
i have a problem in design as follows:
there is a structured file ,for example ,
field 1, field 2 .......
--------------
--------------
i read it into my memory ,there are some change in the memory
maybe add some record or change one field in an existing record.
i am going to check the status the memory every minute.
if it changed, in order to avoiding the system crash, i need to rewrite the memory into the file,
the problem is i think this method may reduce the performance of system because writing to file so frequently.
pls give me some advice,thanks.
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LEARN ABOUT DEBIAN
px_put_data_bcd
PX_PUT_DATA_BCD(3) Library Functions Manual PX_PUT_DATA_BCD(3)
NAME
PX_put_data_bcd -- Put value into a bcd data field
SYNOPSIS
#include <paradox.h>
void PX_put_data_bcd(pxdoc_t *pxdoc, char *data, int len, char *value)
DESCRIPTION
Converts a bcd string into a value for a data field as it stored in the database file. The string may only contain the charcters `+', `-',
`0-9', and `.'. You should use this function instead of accessing the record data directly.
data points to the start of the data field in the record. It must be calculated by summing up all field length before the field to operate
on and add it to the base pointer of the record.
SEE ALSO
PX_put_data_alpha(3), PX_put_data_long(3), PX_put_data_double(3), PX_put_data_short(3), PX_put_data_byte(3), PX_put_data_bytes(3)
AUTHOR
This manual page was written by Uwe Steinmann uwe@steinmann.cx.
PX_PUT_DATA_BCD(3)