It is
important that both arguments of this predicate are enclosed by single quote characters.Update the elements of the character conversion table. This table is used while inputting terms or during the preparation of Prolog texts. The predicate must be used as: char_conversion(In_char, Out_char). The character conversion table is a table which relates input characters with output characters, with the table it is possible to translate input. The characters In_char and Out_char should be quoted atoms to ensure correct execution. When In_char and Out_char are the same the effect of char_conversion/2 is to remove any conversion of character In_char.
It is
important that both arguments of this predicate are enclosed by single quote characters.
see also: current_char_conversion/2 current_op/3 op/3 read/1 read/2 read_term/2 read_term/3 write/1 write/2 write_canonical/1 write_canonical/2 write_list/1 write_list/2 write_list_goal/2 write_list_goal/3 write_term/2 write_term/3 writeq/1 writeq/2
| Example | |
| char_conversion('z', 'b'). | after this predicate has exited successfully all occurences of the character 'z' are replaced by 'b' |
| char_conversion('z', 'z'). | translation of 'z' characters is not done after this example has been exited successfully. |
| Exceptions | |
| In_char is a variable | an instantiation_error exception is thrown |
| Out_char is a variable | an instantiation_error exception is thrown |
| In_char is neither a variable nor a character | a representation_error(character) exception is thrown |
| Out_char is neither a variable nor character | a representation_error(character) exception is thrown |