[Insight-developers] Request for Comment: ITK Style rule that typedefs need to be aligned

Jean-Christophe Fillion-Robin jchris.fillionr at kitware.com
Fri Feb 1 16:30:09 EST 2013


Agreed, make it easier.
To prevent "obfuscation of the code", what about adding a separate commit
that would fix the alignment.
Jc


On Fri, Feb 1, 2013 at 4:26 PM, Cory Quammen <cquammen at cs.unc.edu> wrote:

> I second Matt's opinion. Alignment of the typedefs makes it much
> easier to find a particular typedef visually.
>
> Cory
>
> On Fri, Feb 1, 2013 at 4:06 PM, Matt McCormick
> <matt.mccormick at kitware.com> wrote:
> > Hi Hans,
> >
> > I am of the opinion that the alignment makes the code easier to read.
> > The emphasis may or may not be correct, but my eyes can pass over an
> > aligned section much quicker and understand than one that is not.
> >
> > Thanks,
> > Matt
> >
> > On Fri, Feb 1, 2013 at 5:36 PM, Johnson, Hans J <hans-johnson at uiowa.edu>
> wrote:
> >> Hello ITK community,
> >>
> >> I'd like to take a poll about your feelings regarding an ITK style
> decision
> >> that has been in place for a very long time.
> >>
> >> The ITK style guide states that all typedefs that are on adjacent lines
> MUST
> >> be justified the same.  While I think that this is often a good
> practice,
> >> this rule also obfuscates the code sometimes, and it makes unnecessary
> >> changes in code that is unrelated to the line of code in question (for
> >> example, if an internal type name is renamed to better represent the
> code,
> >> the 10 typedefs around that one also need to change).
> >>
> >> As a side note, the "Clean Code" book advices against such alignement
> as it
> >> emphasizes a relationship between the elements in a column. It should
> >> instead emphasize the relationship between the elements in a row (when
> you
> >> look at those lines, it's usually to know what is the type of the
> variable
> >> -> horizontal relationship).
> >> This also has 2 practical limitations:
> >> - when the variable type or name are long too long that it reach the
> number
> >> of characters per line.
> >> - adding a new type with a name longer than the existing forces all the
> >> other rows to be changed, which adds noise into the history.
> >>
> >> NOTE:  Making this change in style policy will NOT require any code to
> be
> >> changed.  It does allow more flexibility in the future.
> >>
> >> ============================
> >> Please respond to this message so that a historical record of this
> proposals
> >> pro's/con's can be recorded on the mailing list.
> >>
> >> Thanks,
> >> Hans
> >>
> >>
> >>
> >> =================================================================
> >> Hans J. Johnson, Ph.D.
> >> Assistant Professor, Department of Psychiatry
> >>
> >> Mailing Address:
> >> W274 GH                             Email: hans-johnson at uiowa.edu
> >> 200 Hawkins Drive                   Phone: (319) 353 8587
> >> The University of Iowa
> >> Iowa City, IA 52242
> >>
> >>
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>
> --
> Cory Quammen
> Research Associate
> Department of Computer Science
> The University of North Carolina at Chapel Hill
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