Re: [go-nuts] Re: Scope of variable redeclarations

[Robert Engels]

No doubt, but it also increases the cognitive load at the call site - which is sort of against Go’s desire for explicitness.  On Jan 15, 2026, at 5:38 PM, Mike Schilling <mike.s.schill...@gmail.com> wrote: It's handy behavior, because it let you write   x , err := method1()   if err !=nil {     ...   }   y , err := method2()   if err !=nil {     ...   } instead of having to have multiple error variables. On Wednesday, January 14, 2026 at 9:38:39 AM UTC-8 Robert Engels wrote: Yes, I was using shadowing loosely. When you have var x int … 100 lines of code … x,y := somefunc() And y is a new variable - you have no idea at the call site which is a new variable and which is not. That is the “shadowing” I’m referring to - loosely in that it obscures what is actually happening at the call site. You need to know other context - breaking Go’s desire for explicitness. > On Jan 14, 2026, at 11:23 AM, Jan Mercl <0xj...@gmail.com> wrote: > > On Wed, Jan 14, 2026 at 6:09 PM Robert Engels <ren...@ix.netcom.com> wrote: > >> Yes it does. You can declare new variables while assigning to old in Go. > > No it does not AFAICT. You wrote: > > """" > ... mixing of new and old declarations with new variables possibly > being introduced or old ones shadowed. > """" > > Please show a playground program where this happens. Note: shadowing > can happen only across blocks. The rules for short variable > declarations apply only within one block. > > Caveat emptor: Go specs do not define the term "shadowing". So you may > be using a very different definition of shadowing than most other > people have in mind when talking about shadowing variables in Go. -- 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 visit https://groups.google.com/d/msgid/golang-nuts/c8bb7987-500f-464e-9741-bc8054076d26n%40googlegroups.com. -- 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 visit https://groups.google.com/d/msgid/golang-nuts/0AFDB5C9-475C-43D9-8AC3-258619750986%40ix.netcom.com.