Conversion to output ranges

[Timon Gehr]

On 02/07/2012 04:49 PM, Timon Gehr wrote:
> On 02/07/2012 02:35 PM, Mafi wrote:
>> Hi,
>> does anybody know how to bring std.conv.to or something similar to
>> output into an output range?
>>
>> int a = 42;
>> char[25] buffer;
>> to!typeof(buffer[])(a, buffer[]);
>>
>> I want to send these texts throw sockets. Therefore I'd like to reuse
>> the buffer.
>>
>> Mafi
>
> You could use std.format.formattedWrite.
>
> import std.exception, std.format, std.stdio;
>
> // I don't know if this already exists somewhere:
> struct Filler(T:T[]){
> this(T[] pl){payload = pl;}
> size_t index=0;
> T[] payload;
> void put(const T[] s){
> enforce(payload.length>=index+s.length);
> payload[index..index+s.length]=s;
> index+=s.length;
> }
> void put(char s){

Should be 'void put(T s)'.

> enforce(payload.length>=index);
> payload[index++]=s;
> }
> @property auto data(){return payload[0..index];}
> }
> auto filler(T)(T pl){return Filler!T(pl);}
>
> void main(){
> int a = 42;
> char[25] buffer;
> auto f = filler(buffer[]);
> formattedWrite(&f,"%s",a);
> writeln(f.data);
> }