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Diffstat (limited to 'doc/sphinx/language/gallina-specification-language.rst')
| -rw-r--r-- | doc/sphinx/language/gallina-specification-language.rst | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/sphinx/language/gallina-specification-language.rst b/doc/sphinx/language/gallina-specification-language.rst index c26ae2a93..56c8aac94 100644 --- a/doc/sphinx/language/gallina-specification-language.rst +++ b/doc/sphinx/language/gallina-specification-language.rst @@ -905,6 +905,32 @@ Parametrized inductive types sort for the inductive definition and will produce a less convenient rule for case elimination. +.. opt:: Uniform Inductive Parameters + + When this option is set (it is off by default), + inductive definitions are abstracted over their parameters + before typechecking constructors, allowing to write: + + .. coqtop:: all undo + + Set Uniform Inductive Parameters. + Inductive list3 (A:Set) : Set := + | nil3 : list3 + | cons3 : A -> list3 -> list3. + + This behavior is essentially equivalent to starting a new section + and using :cmd:`Context` to give the uniform parameters, like so + (cf. :ref:`section-mechanism`): + + .. coqtop:: all undo + + Section list3. + Context (A:Set). + Inductive list3 : Set := + | nil3 : list3 + | cons3 : A -> list3 -> list3. + End list3. + .. seealso:: Section :ref:`inductive-definitions` and the :tacn:`induction` tactic. |