LookupResult

class pandas::LookupResult

pandas C++ class.

Example

#include <pandas/pandas.h>
using namespace pandas;

// Use LookupResult
LookupResult obj;
// ... operations ...

Other Methods

Signature	Return Type	Location	Example
static LookupResult<T> miss()	static LookupResult<T>	pd_index_lookup.h:48	View
static LookupResult<T> scalar_at(T value)	static LookupResult<T>	pd_index_lookup.h:40

Code Examples

The following examples are extracted from the test suite.

miss (pd_test_5_all.cpp:83706)

        catch (const pandas::KeyError&)   { ok_typed = true; }
        catch (const std::out_of_range&)  { ok_std   = true; }
        catch (const std::exception&)     { ok_std   = true; }
        pandas_tests::check(ok_typed || ok_std,
            "case_20.idx_get_loc_nan_missing.throws_some_keyerror",
            local_fail);
    }

    // Series<double> built over a NaN-bearing index then get_loc(NaN)
    // probe via the underlying Index — exercises NaN equality path on
    // a label miss (separate from the integer index case above).
    {
        bool ok_typed = false;
        bool ok_std   = false;
        try {
            const double nan_v = std::numeric_limits<double>::quiet_NaN();
            pandas::Index<double> idx({nan_v, 10.0, 20.0});
            // Looking up a value that's not in the index where one
            // entry is NaN — must still resolve to KeyError post-90a.
            (void)idx.get_loc(999.0);
        }