Le dimanche 18 mars 2012 à 09:53 -0700, Ali Çehreli a écrit :
> On 03/18/2012 07:45 AM, bioinfornatics wrote:
> > dear, i have this data:
> > ________________________________
> > data1 data2 data3a;data3b;data3c
> > cata1 cata2 cata3a;cata3b;cata3c
> > tata1 tata2 tata3a;tata3b;tata3c
> > ________________________________
> >
> > field are sepaated by tab but third field contain data separeted by semi
> > colon
> >
> > I have try:
> > ________________________________
> > import std.csv;
> > import std.string;
> > import std.stdio;
> >
> > struct Data{
> > public:
> > string field1;
> > string field2;
> >
> > @property void field3( string field ){
> > _field3 = field.split(";");
> > }
> > @property string[] field3( ){
> > return _field3;
> > }
>
> Besides the confusion that Jesse Phillips has pointed out, csvReader
> cannot decide to treat those two property functions as if they represent
> a member of Data.
>
> >
> > private:
> > string[] _field3;
>
> Data still has three members: field1, field2, and _field3.
>
> The problem is, although the format clearly states that there are three
> strings that are delimited by '\t', the third field of the struct is not
> a string.
>
> > }
> >
> > void main(){
> > Data[] result;
> > File f = File( "data.csv", "r" );
> > foreach( char[] line; f.byLine() ){
> > result ~= csvReader!Data(line, '\t').front;
> > }
> > }
>
> So the solution is that _field3 must be a string:
>
> import std.csv;
> import std.string;
> import std.stdio;
>
> struct Data{
> public:
> string field1;
> string field2;
>
> private:
> string _field3;
> }
>
> void main(){
> Data[] result;
> File f = File( "data.csv", "r" );
> foreach( char[] line; f.byLine() ){
> result ~= csvReader!Data(line, '\t').front;
> }
>
> writeln(result);
> }
>
> You must provide the properties on top of that:
>
> import std.csv;
> import std.string;
> import std.stdio;
>
> struct Data{
> public:
> string field1;
> string field2;
>
> void field3( string[] field ) @property {
> _field3 = field.join();
> }
>
> string[] field3( ) @property {
> return _field3.split(";");
> }
>
> string toString() {
> return format("%s,%s,%s", field1, field2, field3);
> }
>
> private:
> string _field3;
> }
>
> void main(){
> Data[] result;
> File f = File( "data.csv", "r" );
> foreach( char[] line; f.byLine() ){
> result ~= csvReader!Data(line, '\t').front;
> }
>
> writeln(result);
> }
>
> Note that to avoid confusing the readers, the property functions both
> use string[], not string. (I've also put @property at the end of the
> function signature, which I started to favor recently.)
>
> The optimizations can come after that. The following calls split() only
> whene necessary:
>
> import std.csv;
> import std.string;
> import std.stdio;
>
> struct Data{
> public:
> string field1;
> string field2;
>
> void field3( string[] field ) @property {
> _field3 = field;
> _raw_field3 = null;
> }
>
> string[] field3( ) @property {
> if (_raw_field3 !is null) {
> _field3 = _raw_field3.split(";");
> }
> return _field3;
> }
>
> string toString() {
> return format("%s,%s,%s", field1, field2, field3);
> }
>
> private:
> string _raw_field3;
> string[] _field3;
> }
>
> void main(){
> Data[] result;
> File f = File( "data.csv", "r" );
> foreach( char[] line; f.byLine() ){
> result ~= csvReader!Data(line, '\t').front;
> }
>
> writeln(result);
> }
>
> Ali
>
Very interesing big thanks for this snippet code
