jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

implemented return type inference

Browse source 
Other fixes:
* bind once is now the default for type classes as documented in the manual
* fixes an issue in template overloading (erroneous  ambiguity when different typedesc params were used)
This commit is contained in:
Zahary Karadjov 2012-09-29 16:49:04 +03:00
commit 7e44015491
9 changed files with 104 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

27
doc/manual.txt
View file

@ -2940,6 +2940,13 @@ from the proc body. This is usually used with the ``auto`` type class:
.. code-block:: nimrod
proc makePair(a, b): auto = (first: a, second: b)
The return type will be treated as additional generic param and can be
explicitly specified at call sites as any other generic param.
Future versions of nimrod may also support overloading based on the return type
of the overloads. In such settings, the expected result type at call sites may
also influence the inferred return type.
Symbol lookup in generics
~~~~~~~~~~~~~~~~~~~~~~~~~
@ -3431,7 +3438,7 @@ typedesc
`typedesc` is a special type allowing you to treat types as compile-time values
(i.e. if types are compile-time values and all values have a type, then
typedesc must be their type).
typedesc must be their type).
When used as a regular proc param, typedesc acts as a type class. The proc
will be instantiated for each unique type parameter and you can refer to the
@ -3642,15 +3649,20 @@ proc with no side effects:
destructor pragma
-----------------
`RAII`:idx:
`automatic variables`:idx:
`destructors`:idx:
The `destructor` pragma is used to mark a proc to act as a type destructor.
The proc must have a single parameter, having a concrete type.
The proc must have a single parameter with a concrete type (the name of a
generic type is allowed too).
Destructors will be automatically invoked when a local stack variable goes
out of scope. If a record type features a field with destructable type and
out of scope.
If a record type features a field with destructable type and
the user have not provided explicit implementation, Nimrod will automatically
generate a destructor for the record type.
generate a destructor for the record type. Nimrod will automatically insert
calls to any base class destructors in both user-defined and generated
destructors.
procvar pragma
--------------
@ -3658,7 +3670,6 @@ The `procvar`:idx: pragma is used to mark a proc that it can be passed to a
procedural variable.
compileTime pragma
------------------
The `compileTime`:idx: pragma is used to mark a proc to be used at compile