llvm dev - Apr 2014 - [LLVMdev] local lambdas: request for coding standard clarification/judgement call

Do local lambdas get named like variables or like functions?

E.g.

void foo() {
  auto helper = [](...){...};
  // or
  auto Helper = [](...){...};
}

My gut is that it should be lowercase (named like a function) since I got a
weird feeling in my stomach seeing an upper-case name being called like a
function in new code.

-- Sean Silva
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> On Apr 14, 2014, at 20:14, Sean Silva <chisophugis at gmail.com>
wrote:
> 
> Do local lambdas get named like variables or like functions?
> 
> E.g.
> 
> void foo() {
>   auto helper = [](...){...};
It should be "help" here (verb), not "helper" (noun), but
this is the direction I like.  It's a local function!
>   // or
>   auto Helper = [](...){...};
> }
> 
> My gut is that it should be lowercase (named like a function) since I got a
weird feeling in my stomach seeing an upper-case name being called like a
function in new code.
> 
> -- Sean Silva
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

Because lambdas can be stateful, they are not simple functions.  I see
lambdas as a shorthand for writing out a functor.

I would write "Helper" because it is an object of the closure type
while
the function itself is "operator()".

On Mon Apr 14 2014 at 8:37:14 PM, Duncan Exon Smith <dexonsmith at
apple.com>
wrote:
>
> > On Apr 14, 2014, at 20:14, Sean Silva <chisophugis at gmail.com>
wrote:
> >
> > Do local lambdas get named like variables or like functions?
> >
> > E.g.
> >
> > void foo() {
> >   auto helper = [](...){...};
>
> It should be "help" here (verb), not "helper" (noun),
but this is the
> direction I like.  It's a local function!
>
> >   // or
> >   auto Helper = [](...){...};
> > }
> >
> > My gut is that it should be lowercase (named like a function) since I
> got a weird feeling in my stomach seeing an upper-case name being called
> like a function in new code.
> >
> > -- Sean Silva
> > _______________________________________________
> > LLVM Developers mailing list
> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
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On Mon, Apr 14, 2014 at 11:34 PM, Duncan Exon Smith <dexonsmith at
apple.com>wrote:
>
> > On Apr 14, 2014, at 20:14, Sean Silva <chisophugis at gmail.com>
wrote:
> >
> > Do local lambdas get named like variables or like functions?
> >
> > E.g.
> >
> > void foo() {
> >   auto helper = [](...){...};
>
> It should be "help" here (verb), not "helper" (noun),
but this is the
> direction I like.  It's a local function!
>
I didn't mean anything  by the name here besides the case; I should have
just written "bar". I think David's point about the lambda being
the object
of closure type while the function itself is "operator()" could be
used to
argue for naming it as a noun, although I expect that most local lambdas
will more naturally be verbs (the original case which got me to write this
post was a local lambda called "eat").

-- Sean Silva

>
> >   // or
> >   auto Helper = [](...){...};
> > }
> >
> > My gut is that it should be lowercase (named like a function) since I
> got a weird feeling in my stomach seeing an upper-case name being called
> like a function in new code.
> >
> > -- Sean Silva
> > _______________________________________________
> > LLVM Developers mailing list
> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
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