#asMutator: is for "generate instVar accessors" code-generation, and
that's why it's in the Tools package.

IMHO, if #isMutator belongs anywhere, it isn't in Collections.

Regards,
  Chris



On Wed, Mar 20, 2019 at 3:08 PM Chris Muller <asqueaker at gmail.com> wrote:
>
> Assuming a single-keyword is a mutator?  Object>>#at: is not a
> mutator.  #indexOf: is not.  #first: is not.  Obviously many more..
>
> If API balance is the goal of this, perhaps #asMutator should be
> removed instead.   This feels application-specific...
>
> On Wed, Mar 20, 2019 at 2:05 PM <commits at source.squeak.org> wrote:
> >
> > Patrick Rein uploaded a new version of Collections to project The Trunk:
> > http://source.squeak.org/trunk/Collections-pre.822.mcz
> >
> > ==================== Summary ====================
> >
> > Name: Collections-pre.822
> > Author: pre
> > Time: 20 March 2019, 8:05:20.383677 pm
> > UUID: 483c4461-cee4-4a4f-82d3-fbc03e7201cc
> > Ancestors: Collections-dtl.821
> >
> > Adds #isMutator to Symbol which is analogous to asMutator.
> >
> > =============== Diff against Collections-dtl.821 ===============
> >
> > Item was added:
> > + ----- Method: Symbol>>isMutator (in category 'testing') -----
> > + isMutator
> > +
> > +       ^ self isKeyword and: [self numArgs = 1]!
> >
> >