Dnia 2021-02-20, o godz. 13:21:09 Michael Ellis <michael.f.el...@gmail.com> napisał(a):
> FWIW, I've put together a tiny package that, with some tradeoffs, seems > useful for reducing boilerplate in the common case where a function simply > wants to return an error to its caller. > The code is almost trivial. It consists of two small functions, > ro.RecoverOn( err *error) and ro.ReturnOn(err error), used as follows: > in the common case where a function simply wants to return an error to its > caller. There is no trade off here for me (an likely many others). It is idiomatic versus weird: 1. hit !er<space> move on coding (in fact MY shortcut puts panic instead of return). 2. USE: import (write) a module, setup defer stack, confuse first-time reader, write a call, move on. Note that both versions on my vim take just one line off the screen estate. This is true for any IDE able to fold. OK - idiomatic would take two lines more if code is viewed in pager or using MS Word. > in the common case where a function simply wants to return an error to its > caller. It is NOT a "common" case. In the "boring" production code we are expected that any service exposed to the end-user will never refuse to work, our code must try really hard to complete, retrying at other server here, then at other city's or continent server room until its real task can be successfully done. Resources (eg. network services) needs to be acquired, then vetted, then operated on, then finally released in a consistent state. So we don't throw "something went wrong" (ie. unhandled exception) up. Nor we do "Return if any error". We do check errors, then retry in loops. Go explicit, IN PLACE handling helps with that alot. TC, -- Wojciech S. Czarnecki << ^oo^ >> OHIR-RIPE -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/20210221005359.41b6f042%40xmint.
