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Changed tutorial documentation referring to 'constant' to 'immutable' (#8056)

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* Changed tutorial documentation referring to 'constant' to 'immutable'

* Clarification regarding side-effect free procedures fo:r multiple assignments
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mboratko 2018-06-18 02:05:35 -04:00 • committed by Varriount
commit 70664bd1a2
1 changed files with 3 additions and 2 deletions
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doc/tut1.rst
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@ -208,7 +208,8 @@ Note that declaring multiple variables with a single assignment which calls a
procedure can have unexpected results: the compiler will *unroll* the procedure can have unexpected results: the compiler will *unroll* the
assignments and end up calling the procedure several times. If the result of assignments and end up calling the procedure several times. If the result of
the procedure depends on side effects, your variables may end up having the procedure depends on side effects, your variables may end up having
different values! For safety use only constant values. different values! For safety use side-effect free procedures if making multiple
assignments.
Constants Constants
@ -642,7 +643,7 @@ initialisation.
Parameters Parameters
---------- ----------
Parameters are constant in the procedure body. By default, their value cannot be Parameters are immutable in the procedure body. By default, their value cannot be
changed because this allows the compiler to implement parameter passing in the changed because this allows the compiler to implement parameter passing in the
most efficient way. If a mutable variable is needed inside the procedure, it has most efficient way. If a mutable variable is needed inside the procedure, it has
to be declared with ``var`` in the procedure body. Shadowing the parameter name to be declared with ``var`` in the procedure body. Shadowing the parameter name