Re: Speeding up text file parser (BLAST tabular format)

[Kagamin via Digitalmars-d-learn]

On Tuesday, 15 September 2015 at 08:53:37 UTC, Fredrik Boulund 
wrote:
my favourite for streaming a file:
enum chunkSize = 4096;
File(fileName).byChunk(chunkSize).map!"cast(char[])a".joiner()

Is this an efficient way of reading this type of file? What 
should one keep in mind when choosing chunkSize?

It provides you only one char at a time instead of a whole line. 
It will be quite constraining for your code if not mind-bending.