…with some example code, and has yet to be checked using jekyll

…provements

…y to submit -sips/pending/_posts/2012-06-13-fixing-eithers-left-rightprojection.md

…ning paragraph

…nt fixes

-This third solution has been [demonstrated][project] to work well, and is the one
+This third solution has been [shown][project] to work well, and is the one

-A trial verson of `Either` incorporating the proposed enhancements,
+A trial verson of `Either` incorporating the proposed fixes,

…on 'Regarding the second example of odd behaviour' corrected

  Regarding the second example of odd behaviour, involving `if`, this was
  traced to the fact that the `filter` method (of `LeftProjection` and
  `RightProjection`) returns an `Option` instead of the
- respective projection.
+ an `Either`, thus allowing `None` to be returned when the predicate is `false`. A
+`Left` (`Right`) could not be returned in the case of a
+`RightProjection` (`LeftProjection`) since no value is available to go
+into it.

…egy ##

as suggested by Daniel Sobral

…t => BB' explanation added; reference to Tony's filter objection added

…around withFilter, now that Convert retains the type of its field

…on now mentions the possibility of using polymorphic implicit conversions

-so that `res.e` would be `Left("(1,2)")` if `b > 0` were false.
+so that `res.e` would be `Left("(1,2)")` if `b > 0` were false. Note
+that `g` may be given a type parameter, in case multiple conversions
+would otherwise be needed, and a single, common, implementation would suffice.