What'S so special about io.Reader? A lot of decoder use

Question

What'S so special about io.Reader? A lot of decoder use

io.Reader as an input instead of raw byte slice. I use regex to parse bytes from file (2-10mb), can I improve this using io.Reader?
Can someone give me a reference for this?

0

09.01.2022

5 ответов

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Thilség Tarnishsunder Автор вопроса

The speed and cpu usage. Parsing large byte using regex, pattern per pattern are expensive.

0

09.01.2022

Roman Sharkov

Thilség Tarnishsunder
The speed and cpu usage. Parsing large byte using ...

why even use regex then?

0

09.01.2022

Thilség Tarnishsunder Автор вопроса

Roman Sharkov
why even use regex then?

What was the norm? Byte by byte matching? I'm trying to write by that method but it's nauseating just to think about. The pattern is simple though.

0

09.01.2022

Erni

what regex do you have? maybe you can divide the read into chunks and then use your regex on those chunks with goroutines

0

09.01.2022

Roman Sharkov · Accepted Answer

Roman Sharkov

Thilség Tarnishsunder
The speed and cpu usage. Parsing large byte using ...

well... there's only one way to find out - profile & benchmark

0

09.01.2022

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What'S so special about io.Reader? A lot of decoder use

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