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| BinHex | 1997-05-06 | 84.0 KB | [TEXT/R*ch] |
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This file was processed as: BinHex
(archive/binHex).
You can browse this item here: csmp digest Vol 3 No 053
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 100%
| dexvert
| BinHex (archive/binHex)
| magic
| Supported |
| 100%
| dexvert
| Newsgroup Content (archive/news)
| magic
| Supported |
| 100%
| dexvert
| Internet Message Format (text/imf)
| magic
| Supported |
| 1%
| dexvert
| Text File (text/txt)
| fallback
| Supported |
| 100%
| file
| news or mail, Non-ISO extended-ASCII text, with CR line terminators
| default
| |
| 100%
| TrID
| E-Mail message (Var. 2)
| default
| |
| 100%
| perlTextCheck
| Likely Text (Perl)
| default
| |
| 100%
| siegfried
| x-fmt/111 Plain Text File
| default
| |
| 100%
| lsar
| BinHex
| default
| |
| 100%
| detectItEasy
| Format: plain text[CR]
| default (weak)
| |
| 100%
| xdgMime
| message/rfc822
| default
|
|
| id metadata |
|---|
| key | value |
|---|
| macFileType | [TEXT] |
| macFileCreator | [R*ch] |
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 46 72 6f 6d 3a 20 70 6f | 74 74 69 65 72 40 63 6c |From: po|ttier@cl|
|00000010| 69 70 70 65 72 2e 65 6e | 73 2e 66 72 20 28 46 72 |ipper.en|s.fr (Fr|
|00000020| 61 6e 63 6f 69 73 20 50 | 6f 74 74 69 65 72 29 0d |ancois P|ottier).|
|00000030| 53 75 62 6a 65 63 74 3a | 20 63 73 6d 70 2d 64 69 |Subject:| csmp-di|
|00000040| 67 65 73 74 2d 76 33 2d | 30 35 33 0d 44 61 74 65 |gest-v3-|053.Date|
|00000050| 3a 20 4d 6f 6e 2c 20 35 | 20 53 65 70 20 31 39 39 |: Mon, 5| Sep 199|
|00000060| 34 20 31 35 3a 32 38 3a | 32 35 20 2b 30 32 30 30 |4 15:28:|25 +0200|
|00000070| 20 28 4d 45 54 20 44 53 | 54 29 0d 0d 43 2e 53 2e | (MET DS|T)..C.S.|
|00000080| 4d 2e 50 2e 20 44 69 67 | 65 73 74 20 20 20 20 20 |M.P. Dig|est |
|00000090| 20 20 20 20 20 20 20 20 | 4d 6f 6e 2c 20 30 35 20 | |Mon, 05 |
|000000a0| 53 65 70 20 39 34 20 20 | 20 20 20 20 20 56 6f 6c |Sep 94 | Vol|
|000000b0| 75 6d 65 20 33 20 3a 20 | 49 73 73 75 65 20 35 33 |ume 3 : |Issue 53|
|000000c0| 0d 20 0d 54 6f 64 61 79 | 27 73 20 54 6f 70 69 63 |. .Today|'s Topic|
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|00000240| 20 20 54 68 69 6e 6b 20 | 44 65 62 75 67 67 65 72 | Think |Debugger|
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|00000290| 20 20 20 20 20 20 20 6d | 61 6c 6c 6f 63 20 70 72 | m|alloc pr|
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|000003a0| 20 73 65 6d 69 2d 0d 72 | 65 67 75 6c 61 72 6c 79 | semi-.r|egularly|
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|000007c0| 6c 2c 20 73 65 6e 64 20 | 65 6d 61 69 6c 20 74 6f |l, send |email to|
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|00000820| 68 65 6c 70 09 09 20 20 | 20 20 20 20 20 20 20 20 |help.. | |
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|00000840| 61 20 73 75 6d 6d 61 72 | 79 20 6f 66 20 63 6f 6d |a summar|y of com|
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|00000860| 69 62 65 20 63 73 6d 70 | 2d 64 69 67 65 73 74 20 |ibe csmp|-digest |
|00000870| 59 6f 75 72 20 4e 61 6d | 65 09 41 64 64 73 20 79 |Your Nam|e.Adds y|
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|000008a0| 66 66 20 63 73 6d 70 2d | 64 69 67 65 73 74 09 09 |ff csmp-|digest..|
|000008b0| 09 52 65 6d 6f 76 65 73 | 20 79 6f 75 20 66 72 6f |.Removes| you fro|
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|00000950| 64 75 2f 70 75 62 2f 63 | 73 6d 70 2d 64 69 67 65 |du/pub/c|smp-dige|
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|00000970| 6c 61 74 65 64 20 74 6f | 20 74 68 65 20 66 74 70 |lated to| the ftp|
|00000980| 20 73 69 74 65 20 73 68 | 6f 75 6c 64 20 62 65 20 | site sh|ould be |
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|000009a0| 74 2e 73 69 6c 76 65 72 | 40 64 61 72 74 6d 6f 75 |t.silver|@dartmou|
|000009b0| 74 68 2e 65 64 75 2e 20 | 43 75 72 72 65 6e 74 6c |th.edu. |Currentl|
|000009c0| 79 20 6e 6f 20 70 72 65 | 76 69 6f 75 73 20 76 6f |y no pre|vious vo|
|000009d0| 6c 75 6d 65 73 20 6f 66 | 20 74 68 65 20 43 53 4d |lumes of| the CSM|
|000009e0| 50 0d 64 69 67 65 73 74 | 20 61 72 65 20 61 76 61 |P.digest| are ava|
|000009f0| 69 6c 61 62 6c 65 20 74 | 68 65 72 65 2e 0d 0d 41 |ilable t|here...A|
|00000a00| 6c 73 6f 2c 20 74 68 65 | 20 64 69 67 65 73 74 73 |lso, the| digests|
|00000a10| 20 61 72 65 20 61 76 61 | 69 6c 61 62 6c 65 20 74 | are ava|ilable t|
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|00000a30| 6f 20 73 65 61 72 63 68 | 20 62 61 63 6b 20 69 73 |o search| back is|
|00000a40| 73 75 65 73 0d 77 69 74 | 68 20 57 41 49 53 2c 20 |sues.wit|h WAIS, |
|00000a50| 75 73 65 20 63 6f 6d 70 | 2e 73 79 73 2e 6d 61 63 |use comp|.sys.mac|
|00000a60| 2e 70 72 6f 67 72 61 6d | 6d 65 72 2e 73 72 63 2e |.program|mer.src.|
|00000a70| 20 57 69 74 68 20 4d 6f | 73 61 69 63 2c 20 75 73 | With Mo|saic, us|
|00000a80| 65 0d 68 74 74 70 3a 2f | 2f 77 77 77 2e 77 61 69 |e.http:/|/www.wai|
|00000a90| 73 2e 63 6f 6d 2f 77 61 | 69 73 2d 64 62 73 2f 63 |s.com/wa|is-dbs/c|
|00000aa0| 6f 6d 70 2e 73 79 73 2e | 6d 61 63 2e 70 72 6f 67 |omp.sys.|mac.prog|
|00000ab0| 72 61 6d 6d 65 72 2e 68 | 74 6d 6c 2e 0d 0d 0d 2d |rammer.h|tml....-|
|00000ac0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000ad0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000ae0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000af0| 2d 2d 2d 2d 2d 2d 0d 0d | 3e 46 72 6f 6d 20 6e 69 |------..|>From ni|
|00000b00| 63 6b 2b 40 70 69 74 74 | 2e 65 64 75 20 28 20 6e |ck+@pitt|.edu ( n|
|00000b10| 69 63 6b 2e 63 20 29 0d | 53 75 62 6a 65 63 74 3a |ick.c ).|Subject:|
|00000b20| 20 41 20 72 65 61 6c 20 | 66 75 6e 6e 79 20 73 74 | A real |funny st|
|00000b30| 6f 72 79 0d 44 61 74 65 | 3a 20 46 72 69 2c 20 31 |ory.Date|: Fri, 1|
|00000b40| 39 20 41 75 67 20 39 34 | 20 32 31 3a 34 30 3a 30 |9 Aug 94| 21:40:0|
|00000b50| 34 20 47 4d 54 0d 4f 72 | 67 61 6e 69 7a 61 74 69 |4 GMT.Or|ganizati|
|00000b60| 6f 6e 3a 20 54 68 65 20 | 50 69 74 74 2c 20 43 68 |on: The |Pitt, Ch|
|00000b70| 65 6d 69 73 74 72 79 0d | 0d 0d 46 6f 6c 6b 73 3a |emistry.|..Folks:|
|00000b80| 0d 0d 20 20 20 20 41 20 | 66 72 69 65 6e 64 20 6f |.. A |friend o|
|00000b90| 66 20 6d 69 6e 65 20 6a | 75 73 74 20 73 65 6e 74 |f mine j|ust sent|
|00000ba0| 20 6d 65 20 74 68 69 73 | 2c 20 70 65 72 73 6f 6e | me this|, person|
|00000bb0| 61 6c 6c 79 20 49 20 74 | 68 69 6e 6b 20 69 74 27 |ally I t|hink it'|
|00000bc0| 73 0d 20 20 20 20 20 20 | 68 69 6c 61 72 69 6f 75 |s. |hilariou|
|00000bd0| 73 20 28 73 6f 20 6c 6f | 6e 67 20 61 73 20 79 6f |s (so lo|ng as yo|
|00000be0| 75 20 64 6f 6e 27 74 20 | 77 6f 72 6b 20 66 6f 72 |u don't |work for|
|00000bf0| 20 4d 53 20 3a 2d 29 2e | 20 20 45 6e 6a 6f 79 2c | MS :-).| Enjoy,|
|00000c00| 0d 0d 0d 2d 20 2d 2d 0d | 0d 0d 22 53 74 61 72 20 |...- --.|.."Star |
|00000c10| 54 72 65 6b 20 4c 6f 73 | 74 20 45 70 69 73 6f 64 |Trek Los|t Episod|
|00000c20| 65 73 22 20 74 72 61 6e | 73 63 72 69 70 74 2e 0d |es" tran|script..|
|00000c30| 0d 3c 50 69 63 61 72 64 | 3e 20 22 4d 72 2e 20 4c |.<Picard|> "Mr. L|
|00000c40| 61 46 6f 72 67 65 2c 20 | 68 61 76 65 20 79 6f 75 |aForge, |have you|
|00000c50| 20 68 61 64 20 61 6e 79 | 20 73 75 63 63 65 73 73 | had any| success|
|00000c60| 20 77 69 74 68 20 79 6f | 75 72 0d 61 74 74 65 6d | with yo|ur.attem|
|00000c70| 70 74 73 20 61 74 20 66 | 69 6e 64 69 6e 67 20 61 |pts at f|inding a|
|00000c80| 20 77 65 61 6b 6e 65 73 | 73 20 77 69 74 68 20 74 | weaknes|s with t|
|00000c90| 68 65 20 42 6f 72 67 3f | 20 20 41 6e 64 20 4d 72 |he Borg?| And Mr|
|00000ca0| 2e 20 44 61 74 61 2c 0d | 68 61 76 65 20 79 6f 75 |. Data,.|have you|
|00000cb0| 20 62 65 65 6e 20 61 62 | 6c 65 20 74 6f 20 61 63 | been ab|le to ac|
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|00002180| 0d 2d 2d 20 0d 2b 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |.-- .+==|========|
|00002190| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|000021a0| 3d 3d 3d 3d 7c 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |====|===|========|
|000021b0| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|000021c0| 3d 3d 3d 2b 0d 7c 20 48 | 61 72 74 6d 75 74 20 4b |===+.| H|artmut K|
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|00002380| 20 20 20 7c 0d 2b 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d | |.+==|========|
|00002390| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|000023a0| 3d 3d 3d 3d 7c 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |====|===|========|
|000023b0| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
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|000027e0| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
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|00002890| 20 20 20 20 20 20 20 20 | 20 20 20 7c 20 61 72 65 | | | are|
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|000028b0| 20 20 20 20 20 20 20 20 | 20 20 7c 0d 3e 20 7c 20 | | |.> | |
|000028c0| 52 6f 73 65 6e 73 74 72 | 61 73 73 65 20 37 20 20 |Rosenstr|asse 7 |
|000028d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 7c 20 20 | | | |
|000028e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000028f0| 20 20 20 20 20 20 20 20 | 20 20 20 20 7c 0d 3e 20 | | |.> |
|00002900| 7c 20 38 32 30 34 39 20 | 50 75 6c 6c 61 63 68 20 || 82049 |Pullach |
|00002910| 69 6d 20 49 73 61 72 74 | 61 6c 20 20 20 20 20 7c |im Isart|al ||
|00002920| 20 49 20 6b 6e 6f 77 20 | 79 6f 75 20 67 75 65 73 | I know |you gues|
|00002930| 73 65 64 20 69 74 2c 20 | 20 20 20 20 20 20 7c 0d |sed it, | |.|
|00002940| 3e 20 7c 20 47 65 72 6d | 61 6e 79 20 20 20 20 20 |> | Germ|any |
|00002950| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00002960| 20 7c 20 62 75 74 20 69 | 74 20 6b 65 65 70 73 20 | | but i|t keeps |
|00002970| 6d 79 20 6c 61 77 79 65 | 72 20 68 61 70 70 79 2e |my lawye|r happy.|
|00002980| 7c 0d 3e 20 7c 20 45 6d | 61 69 6c 3a 20 68 77 6b ||.> | Em|ail: hwk|
|00002990| 40 72 61 74 69 6f 6e 61 | 6c 2e 63 6f 6d 20 20 20 |@rationa|l.com |
|000029a0| 20 20 20 7c 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |
|000029b0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000029c0| 20 20 7c 0d 3e 20 2b 3d | 3d 3d 3d 3d 3d 3d 3d 3d | |.> +=|========|
|000029d0| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|000029e0| 3d 3d 3d 3d 3d 7c 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |=====|==|========|
|000029f0| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00002a00| 3d 3d 3d 3d 2b 0d 0d 0d | 48 61 72 74 6d 75 74 2c |====+...|Hartmut,|
|00002a10| 0d 0d 73 69 6d 70 6c 79 | 20 65 6e 63 6c 6f 73 65 |..simply| enclose|
|00002a20| 20 79 6f 75 72 20 72 6f | 75 74 69 6e 65 20 77 69 | your ro|utine wi|
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|00002a40| 3a 0d 0d 77 69 74 68 20 | 74 69 6d 65 6f 75 74 20 |:..with |timeout |
|00002a50| 6f 66 20 34 30 30 20 73 | 65 63 6f 6e 64 73 20 2d |of 400 s|econds -|
|00002a60| 2d 75 73 65 20 61 6e 79 | 20 76 61 6c 75 65 20 79 |-use any| value y|
|00002a70| 6f 75 20 77 61 6e 74 2c | 20 74 68 65 20 64 65 66 |ou want,| the def|
|00002a80| 61 75 6c 74 20 69 73 20 | 31 32 30 0d 73 65 63 6f |ault is |120.seco|
|00002a90| 6e 64 73 0d 20 09 79 6f | 75 72 20 72 6f 75 74 69 |nds. .yo|ur routi|
|00002aa0| 6e 65 0d 65 6e 64 20 74 | 69 6d 65 6f 75 74 0d 0d |ne.end t|imeout..|
|00002ab0| 4d 69 6b 65 0d 0d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |Mike..--|--------|
|00002ac0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00002ad0| 2d 0d 0d 3e 46 72 6f 6d | 20 6a 70 65 6b 40 75 6d |-..>From| jpek@um|
|00002ae0| 69 63 68 2e 65 64 75 20 | 28 4a 65 66 66 20 50 65 |ich.edu |(Jeff Pe|
|00002af0| 6b 29 0d 53 75 62 6a 65 | 63 74 3a 20 43 2b 2b 20 |k).Subje|ct: C++ |
|00002b00| 56 69 72 74 75 61 6c 20 | 44 65 73 74 72 75 63 74 |Virtual |Destruct|
|00002b10| 6f 72 20 51 0d 44 61 74 | 65 3a 20 31 39 20 41 75 |or Q.Dat|e: 19 Au|
|00002b20| 67 20 31 39 39 34 20 32 | 32 3a 30 35 3a 30 38 20 |g 1994 2|2:05:08 |
|00002b30| 47 4d 54 0d 4f 72 67 61 | 6e 69 7a 61 74 69 6f 6e |GMT.Orga|nization|
|00002b40| 3a 20 55 20 6f 66 20 4d | 69 63 68 20 28 4d 42 41 |: U of M|ich (MBA|
|00002b50| 29 0d 0d 49 20 77 6f 6e | 64 65 72 20 69 66 20 73 |)..I won|der if s|
|00002b60| 6f 6d 65 6f 6e 65 20 63 | 6f 75 6c 64 20 63 6c 65 |omeone c|ould cle|
|00002b70| 61 72 20 74 68 65 20 61 | 69 72 20 61 72 6f 75 6e |ar the a|ir aroun|
|00002b80| 64 20 6f 75 72 20 6f 66 | 66 69 63 65 20 61 62 6f |d our of|fice abo|
|00002b90| 75 74 20 77 68 79 0d 76 | 69 72 74 75 61 6c 20 64 |ut why.v|irtual d|
|00002ba0| 65 73 74 72 75 63 74 6f | 72 73 20 73 68 6f 75 6c |estructo|rs shoul|
|00002bb0| 64 20 6f 72 20 73 68 6f | 75 6c 64 20 6e 6f 74 20 |d or sho|uld not |
|00002bc0| 62 65 20 75 73 65 64 2e | 20 53 70 65 63 69 66 69 |be used.| Specifi|
|00002bd0| 63 61 6c 6c 79 2c 20 49 | 27 6d 0d 69 6e 74 65 72 |cally, I|'m.inter|
|00002be0| 65 73 74 65 64 20 69 6e | 20 4d 65 74 72 6f 77 65 |ested in| Metrowe|
|00002bf0| 72 6b 73 27 20 63 6f 6d | 70 69 6c 65 72 27 73 20 |rks' com|piler's |
|00002c00| 69 6d 70 6c 65 6d 65 6e | 74 61 74 69 6f 6e 2e 0d |implemen|tation..|
|00002c10| 0d 31 29 20 57 68 79 20 | 77 6f 75 6c 64 20 49 20 |.1) Why |would I |
|00002c20| 77 61 6e 74 20 74 6f 2f | 6e 65 65 64 20 74 6f 20 |want to/|need to |
|00002c30| 64 65 63 6c 61 72 65 20 | 61 20 64 65 73 74 72 75 |declare |a destru|
|00002c40| 63 74 6f 72 20 76 69 72 | 74 75 61 6c 3f 0d 32 29 |ctor vir|tual?.2)|
|00002c50| 20 57 68 61 74 20 68 61 | 70 70 65 6e 73 20 69 66 | What ha|ppens if|
|00002c60| 20 49 20 64 6f 6e 27 74 | 3f 0d 0d 54 68 61 6e 6b | I don't|?..Thank|
|00002c70| 73 20 76 65 72 79 20 6d | 75 63 68 21 0d 4a 65 66 |s very m|uch!.Jef|
|00002c80| 66 0d 0d 2d 20 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |f..- ---|--------|
|00002c90| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00002ca0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00002cb0| 0d 4a 65 66 66 20 50 65 | 6b 20 20 20 20 20 20 20 |.Jeff Pe|k |
|00002cc0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00002cd0| 6a 70 65 6b 40 75 6d 69 | 63 68 2e 65 64 75 0d 45 |jpek@umi|ch.edu.E|
|00002ce0| 6d 65 72 61 6c 64 20 49 | 6e 74 65 6c 6c 69 67 65 |merald I|ntellige|
|00002cf0| 6e 63 65 20 2f 20 55 6e | 69 76 65 72 73 69 74 79 |nce / Un|iversity|
|00002d00| 20 6f 66 20 4d 69 63 68 | 69 67 61 6e 0d 0d 2b 2b | of Mich|igan..++|
|00002d10| 2b 2b 2b 2b 2b 2b 2b 2b | 2b 2b 2b 2b 2b 2b 2b 2b |++++++++|++++++++|
|00002d20| 2b 2b 2b 2b 2b 2b 2b 2b | 2b 0d 0d 3e 46 72 6f 6d |++++++++|+..>From|
|00002d30| 20 6d 77 72 6f 6e 40 61 | 6f 6c 2e 63 6f 6d 20 28 | mwron@a|ol.com (|
|00002d40| 4d 57 20 52 6f 6e 29 0d | 44 61 74 65 3a 20 31 39 |MW Ron).|Date: 19|
|00002d50| 20 41 75 67 20 31 39 39 | 34 20 31 39 3a 34 34 3a | Aug 199|4 19:44:|
|00002d60| 30 36 20 2d 30 34 30 30 | 0d 4f 72 67 61 6e 69 7a |06 -0400|.Organiz|
|00002d70| 61 74 69 6f 6e 3a 20 41 | 6d 65 72 69 63 61 20 4f |ation: A|merica O|
|00002d80| 6e 6c 69 6e 65 2c 20 49 | 6e 63 2e 20 28 31 2d 38 |nline, I|nc. (1-8|
|00002d90| 30 30 2d 38 32 37 2d 36 | 33 36 34 29 0d 0d 49 6e |00-827-6|364)..In|
|00002da0| 20 61 72 74 69 63 6c 65 | 20 3c 33 33 33 61 61 6b | article| <333aak|
|00002db0| 24 66 6a 38 40 6c 61 73 | 74 61 63 74 69 6f 6e 68 |$fj8@las|tactionh|
|00002dc0| 65 72 6f 2e 72 73 2e 69 | 74 64 2e 75 6d 69 63 68 |ero.rs.i|td.umich|
|00002dd0| 2e 65 64 75 3e 2c 20 6a | 70 65 6b 40 75 6d 69 63 |.edu>, j|pek@umic|
|00002de0| 68 2e 65 64 75 0d 28 4a | 65 66 66 20 50 65 6b 29 |h.edu.(J|eff Pek)|
|00002df0| 20 77 72 69 74 65 73 3a | 0d 0d 3e 3e 31 29 20 57 | writes:|..>>1) W|
|00002e00| 68 79 20 77 6f 75 6c 64 | 20 49 20 77 61 6e 74 20 |hy would| I want |
|00002e10| 74 6f 2f 6e 65 65 64 20 | 74 6f 20 64 65 63 6c 61 |to/need |to decla|
|00002e20| 72 65 20 61 20 64 65 73 | 74 72 75 63 74 6f 72 20 |re a des|tructor |
|00002e30| 76 69 72 74 75 61 6c 3f | 0d 3e 3e 32 29 20 57 68 |virtual?|.>>2) Wh|
|00002e40| 61 74 20 68 61 70 70 65 | 6e 73 20 69 66 20 49 20 |at happe|ns if I |
|00002e50| 64 6f 6e 27 74 3f 0d 0d | 31 29 20 59 6f 75 20 6e |don't?..|1) You n|
|00002e60| 65 65 64 20 74 6f 20 64 | 65 63 6c 61 72 65 20 61 |eed to d|eclare a|
|00002e70| 20 76 69 72 74 75 61 6c | 20 64 65 73 74 72 75 63 | virtual| destruc|
|00002e80| 74 6f 72 20 77 68 65 6e | 20 79 6f 75 20 68 61 76 |tor when| you hav|
|00002e90| 65 20 61 20 62 61 73 65 | 20 63 6c 61 73 73 2c 0d |e a base| class,.|
|00002ea0| 69 74 73 20 64 65 73 74 | 72 75 63 74 6f 72 20 69 |its dest|ructor i|
|00002eb0| 73 20 64 69 66 66 65 72 | 65 6e 74 20 74 68 61 6e |s differ|ent than|
|00002ec0| 20 74 68 65 20 64 65 72 | 69 76 65 64 20 63 6c 61 | the der|ived cla|
|00002ed0| 73 73 65 73 20 64 65 73 | 74 72 75 63 74 6f 72 2c |sses des|tructor,|
|00002ee0| 20 61 6e 64 0d 6f 62 6a | 65 63 74 73 20 61 72 65 | and.obj|ects are|
|00002ef0| 20 64 65 6c 65 74 65 64 | 20 76 69 61 20 70 6f 69 | deleted| via poi|
|00002f00| 6e 74 65 72 20 6f 72 20 | 72 65 66 65 72 6e 63 65 |nter or |refernce|
|00002f10| 20 74 6f 20 62 61 73 65 | 20 63 6c 61 73 73 2e 20 | to base| class. |
|00002f20| 28 20 61 20 67 6f 6f 64 | 20 68 61 62 69 74 2c 0d |( a good| habit,.|
|00002f30| 64 65 63 6c 61 72 65 20 | 69 74 20 66 6f 72 20 61 |declare |it for a|
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|00002f50| 29 0d 0d 32 29 20 69 66 | 20 79 6f 75 20 64 6f 6e |)..2) if| you don|
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|00002f70| 20 67 75 61 72 61 6e 74 | 65 65 20 61 6c 6c 20 6f | guarant|ee all o|
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|00002fb0| 2c 20 69 66 20 69 74 20 | 69 73 20 61 63 63 65 73 |, if it |is acces|
|00002fc0| 73 65 64 20 61 73 20 61 | 20 62 61 73 65 20 63 6c |sed as a| base cl|
|00002fd0| 61 73 73 20 70 6f 69 74 | 65 72 2e 0d 20 0d 53 63 |ass poit|er.. .Sc|
|00002fe0| 6f 74 74 20 4d 65 79 65 | 72 73 20 69 6e 20 45 66 |ott Meye|rs in Ef|
|00002ff0| 66 65 63 74 69 76 65 20 | 43 2b 2b 20 65 78 70 6c |fective |C++ expl|
|00003000| 61 69 6e 73 20 74 68 69 | 73 20 71 75 69 74 65 20 |ains thi|s quite |
|00003010| 77 65 6c 6c 2e 0d 0d 52 | 6f 6e 20 4c 69 65 63 68 |well...R|on Liech|
|00003020| 74 79 0d 52 6f 6e 4c 40 | 6d 65 74 72 6f 77 65 72 |ty.RonL@|metrower|
|00003030| 6b 73 2e 63 6f 6d 0d 4d | 65 74 72 6f 77 65 72 6b |ks.com.M|etrowerk|
|00003040| 73 20 49 6e 63 2e 0d 0d | 2b 2b 2b 2b 2b 2b 2b 2b |s Inc...|++++++++|
|00003050| 2b 2b 2b 2b 2b 2b 2b 2b | 2b 2b 2b 2b 2b 2b 2b 2b |++++++++|++++++++|
|00003060| 2b 2b 2b 0d 0d 3e 46 72 | 6f 6d 20 6e 65 65 72 69 |+++..>Fr|om neeri|
|00003070| 40 69 69 73 2e 65 65 2e | 65 74 68 7a 2e 63 68 20 |@iis.ee.|ethz.ch |
|00003080| 28 4d 61 74 74 68 69 61 | 73 20 4e 65 65 72 61 63 |(Matthia|s Neerac|
|00003090| 68 65 72 29 0d 44 61 74 | 65 3a 20 31 39 20 41 75 |her).Dat|e: 19 Au|
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|000030b0| 47 4d 54 0d 4f 72 67 61 | 6e 69 7a 61 74 69 6f 6e |GMT.Orga|nization|
|000030c0| 3a 20 53 77 69 73 73 20 | 46 65 64 65 72 61 6c 20 |: Swiss |Federal |
|000030d0| 49 6e 73 74 69 74 75 74 | 65 20 6f 66 20 54 65 63 |Institut|e of Tec|
|000030e0| 68 6e 6f 6c 6f 67 79 20 | 28 45 54 48 5a 29 0d 0d |hnology |(ETHZ)..|
|000030f0| 6a 70 65 6b 40 75 6d 69 | 63 68 2e 65 64 75 20 28 |jpek@umi|ch.edu (|
|00003100| 4a 65 66 66 20 50 65 6b | 29 20 77 72 69 74 65 73 |Jeff Pek|) writes|
|00003110| 3a 0d 3e 49 20 77 6f 6e | 64 65 72 20 69 66 20 73 |:.>I won|der if s|
|00003120| 6f 6d 65 6f 6e 65 20 63 | 6f 75 6c 64 20 63 6c 65 |omeone c|ould cle|
|00003130| 61 72 20 74 68 65 20 61 | 69 72 20 61 72 6f 75 6e |ar the a|ir aroun|
|00003140| 64 20 6f 75 72 20 6f 66 | 66 69 63 65 20 61 62 6f |d our of|fice abo|
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|00003160| 64 65 73 74 72 75 63 74 | 6f 72 73 20 73 68 6f 75 |destruct|ors shou|
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|00003190| 69 63 61 6c 6c 79 2c 20 | 49 27 6d 0d 3e 69 6e 74 |ically, |I'm.>int|
|000031a0| 65 72 65 73 74 65 64 20 | 69 6e 20 4d 65 74 72 6f |erested |in Metro|
|000031b0| 77 65 72 6b 73 27 20 63 | 6f 6d 70 69 6c 65 72 27 |werks' c|ompiler'|
|000031c0| 73 20 69 6d 70 6c 65 6d | 65 6e 74 61 74 69 6f 6e |s implem|entation|
|000031d0| 2e 0d 0d 3e 31 29 20 57 | 68 79 20 77 6f 75 6c 64 |...>1) W|hy would|
|000031e0| 20 49 20 77 61 6e 74 20 | 74 6f 2f 6e 65 65 64 20 | I want |to/need |
|000031f0| 74 6f 20 64 65 63 6c 61 | 72 65 20 61 20 64 65 73 |to decla|re a des|
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|00003210| 0d 0d 41 73 20 61 20 72 | 75 6c 65 20 6f 66 20 74 |..As a r|ule of t|
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|00003280| 74 69 6f 6e 2e 0d 0d 3e | 32 29 20 57 68 61 74 20 |tion...>|2) What |
|00003290| 68 61 70 70 65 6e 73 20 | 69 66 20 49 20 64 6f 6e |happens |if I don|
|000032a0| 27 74 3f 0d 0d 41 73 20 | 61 6e 20 65 78 61 6d 70 |'t?..As |an examp|
|000032b0| 6c 65 2c 20 74 61 6b 65 | 3a 0d 0d 63 6c 61 73 73 |le, take|:..class|
|000032c0| 20 41 20 2e 2e 2e 0d 63 | 6c 61 73 73 20 42 20 3a | A ....c|lass B :|
|000032d0| 20 70 75 62 6c 69 63 20 | 41 20 2e 2e 2e 0d 0d 41 | public |A .....A|
|000032e0| 20 2a 20 70 61 20 3d 20 | 6e 65 77 20 42 3b 0d 0d | * pa = |new B;..|
|000032f0| 64 65 6c 65 74 65 20 70 | 61 3b 0d 0d 55 6e 6c 65 |delete p|a;..Unle|
|00003300| 73 73 20 41 20 68 61 73 | 20 61 20 76 69 72 74 75 |ss A has| a virtu|
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|00003320| 6f 20 64 65 73 74 72 75 | 63 74 6f 72 20 66 6f 72 |o destru|ctor for|
|00003330| 20 42 20 77 69 6c 6c 20 | 62 65 20 65 78 65 63 75 | B will |be execu|
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|00003350| 74 20 70 6f 69 6e 74 65 | 64 20 74 6f 20 62 79 20 |t pointe|d to by |
|00003360| 70 61 2c 20 77 68 69 63 | 68 20 69 73 20 77 6f 75 |pa, whic|h is wou|
|00003370| 6c 64 20 6f 66 74 65 6e | 20 62 65 20 64 65 73 69 |ld often| be desi|
|00003380| 72 61 62 6c 65 2e 0d 0d | 4d 61 74 74 68 69 61 73 |rable...|Matthias|
|00003390| 0d 0d 2d 20 2d 2d 2d 0d | 4d 61 74 74 68 69 61 73 |..- ---.|Matthias|
|000033a0| 20 4e 65 65 72 61 63 68 | 65 72 20 3c 6e 65 65 72 | Neerach|er <neer|
|000033b0| 69 40 69 69 73 2e 65 65 | 2e 65 74 68 7a 2e 63 68 |i@iis.ee|.ethz.ch|
|000033c0| 3e 20 68 74 74 70 3a 2f | 2f 65 72 72 2e 65 74 68 |> http:/|/err.eth|
|000033d0| 7a 2e 63 68 2f 6d 65 6d | 62 65 72 73 2f 6e 65 65 |z.ch/mem|bers/nee|
|000033e0| 72 69 2e 68 74 6d 6c 0d | 20 20 20 22 54 68 65 72 |ri.html.| "Ther|
|000033f0| 65 20 6f 6e 63 65 20 77 | 61 73 20 61 6e 20 41 67 |e once w|as an Ag|
|00003400| 65 20 6f 66 20 52 65 61 | 73 6f 6e 2c 20 62 75 74 |e of Rea|son, but|
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|00003420| 64 20 62 65 79 6f 6e 64 | 20 69 74 2e 22 0d 20 20 |d beyond| it.". |
|00003430| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00003440| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00003450| 20 2d 2d 20 41 79 6e 20 | 52 61 6e 64 2c 20 5f 41 | -- Ayn |Rand, _A|
|00003460| 74 6c 61 73 20 53 68 72 | 75 67 67 65 64 5f 0d 0d |tlas Shr|ugged_..|
|00003470| 2b 2b 2b 2b 2b 2b 2b 2b | 2b 2b 2b 2b 2b 2b 2b 2b |++++++++|++++++++|
|00003480| 2b 2b 2b 2b 2b 2b 2b 2b | 2b 2b 2b 0d 0d 3e 46 72 |++++++++|+++..>Fr|
|00003490| 6f 6d 20 67 75 72 67 6c | 65 40 64 6e 61 69 2e 63 |om gurgl|e@dnai.c|
|000034a0| 6f 6d 20 28 50 65 74 65 | 20 47 6f 6e 74 69 65 72 |om (Pete| Gontier|
|000034b0| 29 0d 44 61 74 65 3a 20 | 46 72 69 2c 20 31 39 20 |).Date: |Fri, 19 |
|000034c0| 41 75 67 20 31 39 39 34 | 20 32 30 3a 31 37 3a 33 |Aug 1994| 20:17:3|
|000034d0| 34 20 2d 30 38 30 30 0d | 4f 72 67 61 6e 69 7a 61 |4 -0800.|Organiza|
|000034e0| 74 69 6f 6e 3a 20 49 6e | 74 65 67 65 72 20 50 6f |tion: In|teger Po|
|000034f0| 65 74 20 53 6f 66 74 77 | 61 72 65 0d 0d 49 6e 20 |et Softw|are..In |
|00003500| 61 72 74 69 63 6c 65 20 | 3c 33 33 33 61 61 6b 24 |article |<333aak$|
|00003510| 66 6a 38 40 6c 61 73 74 | 61 63 74 69 6f 6e 68 65 |fj8@last|actionhe|
|00003520| 72 6f 2e 72 73 2e 69 74 | 64 2e 75 6d 69 63 68 2e |ro.rs.it|d.umich.|
|00003530| 65 64 75 3e 2c 20 6a 70 | 65 6b 40 75 6d 69 63 68 |edu>, jp|ek@umich|
|00003540| 2e 65 64 75 0d 28 4a 65 | 66 66 20 50 65 6b 29 20 |.edu.(Je|ff Pek) |
|00003550| 77 72 6f 74 65 3a 0d 0d | 3e 20 31 29 20 57 68 79 |wrote:..|> 1) Why|
|00003560| 20 77 6f 75 6c 64 20 49 | 20 77 61 6e 74 20 74 6f | would I| want to|
|00003570| 2f 6e 65 65 64 20 74 6f | 20 64 65 63 6c 61 72 65 |/need to| declare|
|00003580| 20 61 20 28 43 2b 2b 29 | 20 64 65 73 74 72 75 63 | a (C++)| destruc|
|00003590| 74 6f 72 20 76 69 72 74 | 75 61 6c 3f 0d 3e 20 32 |tor virt|ual?.> 2|
|000035a0| 29 20 57 68 61 74 20 68 | 61 70 70 65 6e 73 20 69 |) What h|appens i|
|000035b0| 66 20 49 20 64 6f 6e 27 | 74 3f 0d 0d 54 68 65 20 |f I don'|t?..The |
|000035c0| 41 6e 6e 6f 74 61 74 65 | 64 20 43 2b 2b 20 52 65 |Annotate|d C++ Re|
|000035d0| 66 65 72 65 6e 63 65 20 | 4d 61 6e 75 61 6c 20 28 |ference |Manual (|
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