Phil Housley <[email protected]> writes:
> Aside: The following doesn't work:
>
> public void main() {
> float flt = 9.12f;
> var output = FileStream.open("./data.txt","w");
> output.printf("%f", flt);
> float in_flt = 5f;
> var input = FileStream.open("./data.txt", "r");
> int read = input.scanf("%f", out in_flt);
> message("%d %f", read, in_flt);
> }
>
> Because in the generated C, the output file isn't closed before
> attempting to read. This is a sort-of-bug, as there is no way to
> explicitly close a FileStream...
There is a way to close the output file
output = null;
as fclose is declared a free_function for FileStream.
>
>> Well, 'FileStream.write' api looks like below:
>>
>> public size_t <http://valadoc.org/glib-2.0/size_t.html> *write* (
>> uint8 <http://valadoc.org/glib-2.0/uint8.html>[] buf,
>> size_t<http://valadoc.org/glib-2.0/size_t.html> size
>> = 1)
>>
>> I have to cast my floating point number into integer which in my case it is
>> useless...
>> In fact it seems impossible to me, because i failed to do that, Since write
>> function
>> needs an array of one-byte-values and I have a float value!!!
>>
>> If I use 'FileStream.printf' function, it writes data into file in ascii
>> format.
>> this is my code sample:
>>
>> public void main(){
>> float flt = 9.12f;
>> var output = FileStream.open("./data.bin","w+b");
>> output.printf("%f", flt);
>> float? in_flt = null;
>> var input = FileStream.open("./data.bin", "r+b");
>> input.scanf("%f", in_flt); // !!!error
>> }
>>
>> I need a way write in floating point format and read in the same format,
>> without casting...
>> What should i do?
>>
>> _______________________________________________
>> vala-list mailing list
>> [email protected]
>> http://mail.gnome.org/mailman/listinfo/vala-list
>>
>>
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