Any additions for write-to-file short program

[pascal111]

On Thursday, 18 November 2021 at 23:09:28 UTC, H. S. Teoh wrote:
> On Thu, Nov 18, 2021 at 10:20:48PM +0000, pascal111 via 
> Digitalmars-d-learn wrote:
>> In next program that rewrites original written texts into new 
>> files, I see that it may need some additions or we can accept 
>> it like this because it's just a simple program that achieve 
>> its task and doesn't need any philosophical additions.
>
> I assume there's a reason you're reading the input file by line 
> instead of just copying it using larger fixed-size blocks?  
> Perhaps you have in mind some kind of line-based filtering or 
> processing eventually?
>
> Because for copying a file, using a large, fixed-size block 
> will work much faster. Not to mention the code will be simpler. 
> For example:
>
> 	auto inputFile = File(inputFilename, "r");
> 	auto outputFile = File(outputFilename, "w");
>
> 	enum bufferSize = 8194;
> 	inputFile.byChunk(bufferSize)	// read input in blocks of 8194 
> bytes
> 		.copy(outputFile.lockingBinaryWriter); // copy each block 
> into output file
>
>
> T


When I compiled the code after adding yours, I found this error 
message:

"untitled20.d:24:8: error: no property 'copy' for type 'ByChunk'
    24 |        .copy(outputFile.lockingBinaryWriter); // copy 
each block into output file
       |        ^
"