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The 4-chan Go programmer

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Re: The 4-chan Go programmer

#11

Post by zimpenfish »

_yb2s wrote: post #7

As a scientist that ends up working closely with actual professional software engineers... lots of the stuff they do looks like this do me, and I can't for the life of me make sense of why you'd do it. I have seen a single line of code passed through 4 "interface functions" before it is called that call each other sequentially, and are of course in separate files in separate folders. It makes reading the code to figu…

> I have seen a single line of code passed through 4 "interface functions"

I once had to deal with a HTTP handler that called `Validate` on interface A which called `Validate` on interface B which called `Validate` on interface C which called `Validate` on interface D which finally did the actual work. There was a lot of profanity that month.

Re: The 4-chan Go programmer

#12

Post by hyperhello »

_yb2s wrote: post #7

As a scientist that ends up working closely with actual professional software engineers... lots of the stuff they do looks like this do me, and I can't for the life of me make sense of why you'd do it. I have seen a single line of code passed through 4 "interface functions" before it is called that call each other sequentially, and are of course in separate files in separate folders. It makes reading the code to figu…

I enjoy reading about new languages on HN. It’s weird because the grammar is weird. It’s like seeing start var ! oper addition sub var !! mltplctn var % close close or something and eventually you realize it means a + b*c. Why invent a new language? Why not just write list if you want a list of integers or write Channel or one of the idioms that everyone knows? I don’t know, but it can be fun to play with communication and meaning and grammar, and maybe even more fun if you get to be part of a group that gets paid for it.

Re: The 4-chan Go programmer

#13

Post by mbivert »

kardianos wrote: post #3

The "chan chan Value" or "chan struct{resp chan Value}" is actually a pattern I've used in a very specific situation. It's a situation where a message bus probably could have been used instead, but then you'd have a message bus to handle...

Probably similar to the concurrent chat server from gopl[0] then. The pattern is a bit surprising at first, still fairly readable.

[0]: https://github.com/adonovan/gopl.io/blob/master/ch8/chat/cha...

Re: The 4-chan Go programmer

#14

Post by zachmu »

Lucasoato wrote: post #5

There is a Go developer that defends using channels four times like in this blog, he also made some great medium posts in which he details real use cases. His name is Christopher, if you want to find more about him, just Google “chris chan 4chan”.

You are a bad bad man

Re: The 4-chan Go programmer

#15

Post by Cthulhu_ »

zimpenfish wrote: post #11
_yb2s wrote: post #7

As a scientist that ends up working closely with actual professional software engineers... lots of the stuff they do looks like this do me, and I can't for the life of me make sense of why you'd do it. I have seen a single line of code passed through 4 "interface functions" before it is called that call each other sequentially, and are of course in separate files in separate folders. It makes reading the code to figu…

> I have seen a single line of code passed through 4 "interface functions" I once had to deal with a HTTP handler that called `Validate` on interface A which called `Validate` on interface B which called `Validate` on interface C which called `Validate` on interface D which finally did the actual work. There was a lot of profanity that month.

I mean to a point that makes sense; you got your base data types like idk, a bank account number which can be validated, which is inside a bank account which can be validated, which is in a customer which can be validated, etc etc. Visitor pattern style, I believe?

Re: The 4-chan Go programmer

#17

Post by HideousKojima »

Lucasoato wrote: post #5

There is a Go developer that defends using channels four times like in this blog, he also made some great medium posts in which he details real use cases. His name is Christopher, if you want to find more about him, just Google “chris chan 4chan”.

Not to be confused with (current? former?) Google employee Christopher Poole, but I guess that's a moot point at this point.

Re: The 4-chan Go programmer

#18

Post by ge96 »

Lucasoato wrote: post #5

There is a Go developer that defends using channels four times like in this blog, he also made some great medium posts in which he details real use cases. His name is Christopher, if you want to find more about him, just Google “chris chan 4chan”.

True believer in Sonichu

Re: The 4-chan Go programmer

#19

Post by jerf »

kardianos wrote: post #3

The "chan chan Value" or "chan struct{resp chan Value}" is actually a pattern I've used in a very specific situation. It's a situation where a message bus probably could have been used instead, but then you'd have a message bus to handle...

I get "chan chan"s pretty routinely. It is when I send a message to some internal server/actor, and I also send it the channel to reply on in the message. Usually it ends up being a "chan struct { ... something with a chan in it ... }" rather than a literal "chan chan" you can grep for, but the principle is there. Very useful pattern; I consider it one of the basics in Go.

"chan chan chan" never, as far as I know.

It would be overkill to replace everything like that with a message bus. Very different performance characteristics for one thing. Go's channels are very much an internal-to-the-OS-process construct, if I'm talking internal to the OS process there's no value in "upgrading" to a message bus.

Re: The 4-chan Go programmer

#20

Post by quickthrowman »

HideousKojima wrote: post #17
Lucasoato wrote: post #5

There is a Go developer that defends using channels four times like in this blog, he also made some great medium posts in which he details real use cases. His name is Christopher, if you want to find more about him, just Google “chris chan 4chan”.

Not to be confused with (current? former?) Google employee Christopher Poole, but I guess that's a moot point at this point.

Something awful must’ve happened to that guy in the past.
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