Function eccodes_sys::grib_index_select_string

pub unsafe extern "C" fn grib_index_select_string(
    index: *mut grib_index, 
    key: *const c_char, 
    value: *const c_char
) -> c_int

Select the message subset with key==value. The value is a string. The key must have been created with string type or have string as native type if the type was not explicitly defined in the index creation.

@param index : an index created from a file. The index must have been created with the key in argument. @param key : key to be selected @param value : value of the key to select @return 0 if OK, integer value on error