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Revision 4662, 1.1 KB
(checked in by pmoura, 5 days ago)
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Updated copyright notice.
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| 1 | ================================================================ |
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| 2 | Logtalk - Open source object-oriented logic programming language |
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| 3 | Release 2.35.0 |
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| 4 | |
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| 5 | Copyright (c) 1998-2009 Paulo Moura. All Rights Reserved. |
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| 6 | Logtalk is free software. You can redistribute it and/or modify |
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| 7 | it under the terms of the "Artistic License 2.0" as published by |
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| 8 | The Perl Foundation. Consult the "LICENSE.txt" file for details. |
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| 9 | ================================================================ |
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| 10 | |
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| 11 | |
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| 12 | % start by loading the example: |
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| 13 | |
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| 14 | | ?- logtalk_load(logging(loader)). |
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| 15 | ... |
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| 16 | |
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| 17 | |
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| 18 | % the object log is automatically initialized when the object is loaded: |
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| 19 | |
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| 20 | | ?- object::print_log. |
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| 21 | |
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| 22 | 2008/7/17-18:15:38 - start |
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| 23 | yes |
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| 24 | |
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| 25 | |
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| 26 | % add a new entry to the object log: |
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| 27 | |
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| 28 | | ?- object::add_log_entry('something interesting happens'). |
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| 29 | |
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| 30 | yes |
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| 31 | |
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| 32 | |
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| 33 | % check current object log: |
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| 34 | |
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| 35 | | ?- object::print_log. |
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| 36 | |
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| 37 | 2008/7/17-18:15:38 - start |
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| 38 | 2008/7/17-18:18:10 - something interesting happens |
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| 39 | yes |
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| 40 | |
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| 41 | |
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| 42 | % in alternative, enumerate all log entries using backtracking: |
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| 43 | |
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| 44 | | ?- object::log_entry(Date, Entry). |
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| 45 | |
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| 46 | Date = 2008/7/17-8:15:38, |
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| 47 | Entry = start ; |
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| 48 | Date = 2008/7/17-8:18:0, |
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| 49 | Entry = 'something interesting happens' |
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| 50 | yes |
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