built-in predicate

set_logtalk_flag/2

Description

set_logtalk_flag(Flag, Value)

Sets global, default, flag values. For local flag scope, use the corresponding set_logtalk_flag/2 directive. To set a global flag value when compiling and loading a source file, wrap the calls to this built-in predicate with an initialization/1 directive. For a description of the predefined compiler flags, please see the Compiler flags section in the User Manual.

Modes and number of proofs

set_logtalk_flag(+atom, +nonvar) - one

Errors

Flag is a variable:

instantiation_error

Value is a variable:

instantiation_error

Flag is neither a variable nor an atom:

type_error(atom, Flag)

Flag is an atom but an invalid flag:

domain_error(flag, Flag)

Value is not a valid value for flag Flag:

domain_error(flag_value, Flag + Value)

Flag is a read-only flag:

permission_error(modify, flag, Flag)

Examples

% turn off globally and by default the compiler
% unknown entities warnings:
| ?- set_logtalk_flag(unknown_entities, silent).

See also

create_logtalk_flag/3, current_logtalk_flag/2