[Cython] libcpp.string operators

[Brent Pedersen]

On Tue, Apr 19, 2011 at 2:45 PM, Brent Pedersen <bpederse at gmail.com> wrote:
> hi, i have been using a stub for the c++ <string> in a lot of my work.
> i decided to have a go at doing a proper string.pxd, pasted here:
>
> https://gist.github.com/929604
>
> other than the operators, it's mostly implemented with tests. but when
> i try the operators
> with this test:
>
> def test_equal_operator(char *a, char *b):
>    """
>    >>> test_equal_operator("asdf", "asdf")
>    True
>    """
>    cdef string s = string(a)
>    cdef string t = string(b)
>    cdef bint same = t == s
>    return same
>
> and this declaration in the pxd:
>
>    bint operator==(string&, string&)


it seems:

        bint operator==(string&)

is the correct syntax. i had copied the stuff from vector.pxd

>
> i get the error below. any ideas what i'm doing wrong?
> thanks,
> -brent
>
>
>
>
>
> === Got errors: ===
> 152:23: Invalid types for '==' (string, string)
>
>
> ======================================================================
> ERROR: runTest (__main__.CythonRunTestCase)
> compiling (cpp) and running cpp_stl_string
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>  File "runtests.py", line 569, in run
>    self.runCompileTest()
>  File "runtests.py", line 400, in runCompileTest
>    self.test_directory, self.expect_errors, self.annotate)
>  File "runtests.py", line 546, in compile
>    self.assertEquals(None, unexpected_error)
> AssertionError: None != u"152:23: Invalid types for '==' (string, string)"
>