On Thursday, 7 August 2014 at 15:14:00 UTC, TJB wrote:
align(1) struct QuotesBin
{
int qtim;
int bid;
int ofr;
int bidsiz;
int ofrsiz;
short mode;
char[1] ex;
char[4] mmid;
}
Thanks!
(You forgot to include the error. For other readers: It fails to
compile with "template std.conv.toImpl cannot deduce function
from argument types !(char[4])(string)" and similar error
messages.)
This is caused by the two `char` arrays. `std.conv.to` cannot
convert strings to fixed-size char arrays, probably because it's
not clear what should happen if the input string is too long or
too short.
Would it be a good idea to support this?
As a workaround, you could declare a second struct with the same
members, but `ex` and `mmid` as strings, read your data into
these, and assign it to the first structure:
import std.algorithm;
import std.csv;
import stdio = std.stdio;
import std.stream;
align(1) struct QuotesBinDummy
{
int qtim;
int bid;
int ofr;
int bidsiz;
int ofrsiz;
short mode;
string ex;
string mmid;
}
align(1) struct QuotesBin
{
int qtim;
int bid;
int ofr;
int bidsiz;
int ofrsiz;
short mode;
char[1] ex;
char[4] mmid;
}
void main()
{
string infile = "temp.csv";
string outfile = "temp.bin";
Stream fin = new BufferedFile(infile);
Stream fout = new BufferedFile(outfile, FileMode.Out);
foreach(ulong n, char[] line; fin)
{
auto temp = csvReader!QuotesBinDummy(line).front;
QuotesBin record;
record.tupleof = temp.tupleof;
fout.writeExact(&record, QuotesBin.sizeof);
}
fin.close();
fout.close();
}
The line "record.tupleof = temp.tupleof;" will however fail with
your example data, because the `ex` field includes a space in the
CSV, and the last field is empty, but needs to be 4 chars long.
