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open in: 
MacOS 8.1
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Win98
|
DOS
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view JSON data
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This file was processed as: Mailbox/MIME Entity
(archive/mbox).
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 100%
| dexvert
| Newsgroup Content (archive/news)
| magic
| Supported |
| 100%
| dexvert
| Mailbox/MIME Entity (archive/mbox)
| magic
| Supported |
| 100%
| dexvert
| Internet Message Format (text/imf)
| magic
| Supported |
| 1%
| dexvert
| Text File (text/txt)
| fallback
| Supported |
| 100%
| file
| news, ASCII text
| default
| |
| 100%
| checkBytes
| Printable ASCII
| default
| |
| 100%
| dexmagic
| PrintFox/Pagefox WEAK
| default
| |
| 100%
| perlTextCheck
| Likely Text (Perl)
| default
| |
| 100%
| siegfried
| fmt/950 MIME Email (1.0)
| default
| |
| 100%
| detectItEasy
| Format: plain text[LF]
| default (weak)
| |
| 100%
| xdgMime
| message/news
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 50 61 74 68 3a 20 6e 65 | 77 73 2e 72 61 69 6e 2e |Path: ne|ws.rain.|
|00000010| 6f 72 67 21 75 73 65 6e | 65 74 0a 46 72 6f 6d 3a |org!usen|et.From:|
|00000020| 20 22 47 75 75 73 20 4c | 65 65 75 77 20 6a 72 2e | "Guus L|eeuw jr.|
|00000030| 22 20 3c 67 75 75 73 6c | 40 65 69 66 66 65 6c 2e |" <guusl|@eiffel.|
|00000040| 63 6f 6d 3e 0a 4e 65 77 | 73 67 72 6f 75 70 73 3a |com>.New|sgroups:|
|00000050| 20 63 6f 6d 70 2e 6c 61 | 6e 67 2e 63 2b 2b 0a 53 | comp.la|ng.c++.S|
|00000060| 75 62 6a 65 63 74 3a 20 | 52 65 3a 20 50 75 72 65 |ubject: |Re: Pure|
|00000070| 20 76 69 72 74 75 61 6c | 20 64 65 73 74 72 75 63 | virtual| destruc|
|00000080| 74 6f 72 73 3f 0a 44 61 | 74 65 3a 20 57 65 64 2c |tors?.Da|te: Wed,|
|00000090| 20 31 37 20 41 70 72 20 | 31 39 39 36 20 32 30 3a | 17 Apr |1996 20:|
|000000a0| 35 38 3a 34 35 20 2d 30 | 37 30 30 0a 4f 72 67 61 |58:45 -0|700.Orga|
|000000b0| 6e 69 7a 61 74 69 6f 6e | 3a 20 49 6e 74 65 72 61 |nization|: Intera|
|000000c0| 63 74 69 76 65 20 53 6f | 66 74 77 61 72 65 20 45 |ctive So|ftware E|
|000000d0| 6e 67 69 6e 65 65 72 69 | 6e 67 20 49 6e 63 2e 20 |ngineeri|ng Inc. |
|000000e0| 68 74 74 70 3a 2f 2f 77 | 77 77 2e 65 69 66 66 65 |http://w|ww.eiffe|
|000000f0| 6c 2e 63 6f 6d 2f 0a 4d | 65 73 73 61 67 65 2d 49 |l.com/.M|essage-I|
|00000100| 44 3a 20 3c 33 31 37 35 | 42 44 46 35 2e 35 41 44 |D: <3175|BDF5.5AD|
|00000110| 43 38 31 42 35 40 65 69 | 66 66 65 6c 2e 63 6f 6d |C81B5@ei|ffel.com|
|00000120| 3e 0a 52 65 66 65 72 65 | 6e 63 65 73 3a 20 3c 34 |>.Refere|nces: <4|
|00000130| 6b 75 71 30 69 24 70 36 | 74 40 66 74 70 2e 65 65 |kuq0i$p6|t@ftp.ee|
|00000140| 2e 76 69 6c 6c 2e 65 64 | 75 3e 0a 4e 4e 54 50 2d |.vill.ed|u>.NNTP-|
|00000150| 50 6f 73 74 69 6e 67 2d | 48 6f 73 74 3a 20 40 6f |Posting-|Host: @o|
|00000160| 75 74 62 61 63 6b 2e 65 | 69 66 66 65 6c 2e 63 6f |utback.e|iffel.co|
|00000170| 6d 0a 4d 69 6d 65 2d 56 | 65 72 73 69 6f 6e 3a 20 |m.Mime-V|ersion: |
|00000180| 31 2e 30 0a 43 6f 6e 74 | 65 6e 74 2d 54 79 70 65 |1.0.Cont|ent-Type|
|00000190| 3a 20 74 65 78 74 2f 70 | 6c 61 69 6e 3b 20 63 68 |: text/p|lain; ch|
|000001a0| 61 72 73 65 74 3d 75 73 | 2d 61 73 63 69 69 0a 43 |arset=us|-ascii.C|
|000001b0| 6f 6e 74 65 6e 74 2d 54 | 72 61 6e 73 66 65 72 2d |ontent-T|ransfer-|
|000001c0| 45 6e 63 6f 64 69 6e 67 | 3a 20 37 62 69 74 0a 58 |Encoding|: 7bit.X|
|000001d0| 2d 4d 61 69 6c 65 72 3a | 20 4d 6f 7a 69 6c 6c 61 |-Mailer:| Mozilla|
|000001e0| 20 32 2e 30 20 28 58 31 | 31 3b 20 49 3b 20 4c 69 | 2.0 (X1|1; I; Li|
|000001f0| 6e 75 78 20 31 2e 32 2e | 38 20 69 35 38 36 29 0a |nux 1.2.|8 i586).|
|00000200| 54 6f 3a 20 73 68 65 72 | 69 64 61 6e 40 6d 6f 6e |To: sher|idan@mon|
|00000210| 65 74 2e 76 69 6c 6c 2e | 65 64 75 0a 0a 73 68 65 |et.vill.|edu..she|
|00000220| 72 69 64 61 6e 40 6d 6f | 6e 65 74 2e 76 69 6c 6c |ridan@mo|net.vill|
|00000230| 2e 65 64 75 20 77 72 6f | 74 65 3a 0a 3e 20 0a 3e |.edu wro|te:.> .>|
|00000240| 20 54 68 65 20 72 75 6c | 65 20 77 69 74 68 20 64 | The rul|e with d|
|00000250| 65 73 74 72 75 63 74 6f | 72 73 20 69 73 20 74 68 |estructo|rs is th|
|00000260| 61 74 20 74 68 65 79 20 | 61 72 65 20 61 6c 77 61 |at they |are alwa|
|00000270| 79 73 20 6f 76 65 72 72 | 69 64 64 65 6e 2c 20 72 |ys overr|idden, r|
|00000280| 69 67 68 74 3f 0a 3e 20 | 54 68 61 74 27 73 20 61 |ight?.> |That's a|
|00000290| 20 71 75 6f 74 65 20 66 | 72 6f 6d 20 56 43 34 20 | quote f|rom VC4 |
|000002a0| 64 6f 63 73 2c 20 42 54 | 57 2e 20 20 57 68 65 6e |docs, BT|W. When|
|000002b0| 20 49 20 64 6f 20 74 68 | 69 73 3a 0a 3e 20 0a 3e | I do th|is:.> .>|
|000002c0| 20 63 6c 61 73 73 20 43 | 42 61 73 65 20 7b 0a 3e | class C|Base {.>|
|000002d0| 20 70 75 62 6c 69 63 3a | 0a 3e 20 20 20 20 20 76 | public:|.> v|
|000002e0| 69 72 74 75 61 6c 20 7e | 43 42 61 73 65 28 29 20 |irtual ~|CBase() |
|000002f0| 3d 20 30 3b 0a 3e 20 2e | 2e 2e 7d 3b 0a 3e 20 0a |= 0;.> .|..};.> .|
|00000300| 3e 20 63 6c 61 73 73 20 | 43 43 68 69 6c 64 20 3a |> class |CChild :|
|00000310| 20 70 75 62 6c 69 63 20 | 43 42 61 73 65 20 7b 0a | public |CBase {.|
|00000320| 3e 20 70 75 62 6c 69 63 | 3a 0a 3e 20 20 20 20 20 |> public|:.> |
|00000330| 7e 43 43 68 69 6c 64 28 | 29 3b 0a 3e 20 2e 2e 2e |~CChild(|);.> ...|
|00000340| 7d 3b 0a 3e 20 0a 3e 20 | 61 6e 64 20 64 65 63 6c |};.> .> |and decl|
|00000350| 61 72 65 20 61 20 62 6f | 64 79 20 66 6f 72 20 7e |are a bo|dy for ~|
|00000360| 43 43 68 69 6c 64 2c 20 | 49 20 61 6c 77 61 79 73 |CChild, |I always|
|00000370| 20 67 65 74 20 75 6e 72 | 65 73 6f 6c 76 65 64 20 | get unr|esolved |
|00000380| 65 78 74 65 72 6e 61 6c | 20 6f 6e 0a 3e 20 43 42 |external| on.> CB|
|00000390| 61 73 65 3a 3a 7e 43 42 | 61 73 65 2e 20 20 49 20 |ase::~CB|ase. I |
|000003a0| 68 61 76 65 20 73 65 65 | 6e 20 74 68 69 73 20 69 |have see|n this i|
|000003b0| 6e 20 73 65 76 65 72 61 | 6c 20 63 61 73 65 73 2e |n severa|l cases.|
|000003c0| 20 20 4d 79 20 67 75 65 | 73 73 20 69 73 20 69 74 | My gue|ss is it|
|000003d0| 27 73 20 6e 6f 74 0a 3e | 20 61 20 63 6f 6d 70 69 |'s not.>| a compi|
|000003e0| 6c 65 72 20 62 75 67 2c | 20 73 6f 20 77 68 61 74 |ler bug,| so what|
|000003f0| 20 61 6d 20 49 20 6d 69 | 73 73 69 6e 67 3f 0a 0a | am I mi|ssing?..|
|00000400| 48 65 72 65 20 69 73 20 | 77 68 61 74 20 74 68 65 |Here is |what the|
|00000410| 20 77 6f 72 6b 69 6e 67 | 20 70 61 70 65 72 20 6f | working| paper o|
|00000420| 66 20 74 68 65 20 41 4e | 53 49 20 63 6f 6d 69 74 |f the AN|SI comit|
|00000430| 74 65 65 20 6f 6e 20 64 | 65 73 74 72 75 63 74 6f |tee on d|estructo|
|00000440| 72 73 20 73 61 79 73 20 | 28 73 65 63 2e 0a 31 32 |rs says |(sec..12|
|00000450| 2e 34 2e 36 29 3a 0a 22 | 44 65 73 74 72 75 63 74 |.4.6):."|Destruct|
|00000460| 6f 72 73 20 61 72 65 20 | 6e 6f 74 20 69 6e 68 65 |ors are |not inhe|
|00000470| 72 69 74 65 64 2e 20 41 | 20 64 65 73 74 72 75 63 |rited. A| destruc|
|00000480| 74 6f 72 20 63 61 6e 20 | 62 65 20 64 65 63 6c 61 |tor can |be decla|
|00000490| 72 65 64 20 76 69 72 74 | 75 61 6c 20 6f 72 20 70 |red virt|ual or p|
|000004a0| 75 72 65 0a 76 69 72 74 | 75 61 6c 3b 20 69 66 20 |ure.virt|ual; if |
|000004b0| 61 6e 79 20 6f 62 6a 65 | 63 74 73 20 6f 66 20 74 |any obje|cts of t|
|000004c0| 68 61 74 20 63 6c 61 73 | 73 20 6f 72 20 61 6e 79 |hat clas|s or any|
|000004d0| 20 64 65 72 69 76 65 64 | 20 63 6c 61 73 73 20 61 | derived| class a|
|000004e0| 72 65 20 63 72 65 61 74 | 65 64 20 69 6e 20 74 68 |re creat|ed in th|
|000004f0| 65 0a 70 72 6f 67 72 61 | 6d 2c 20 74 68 65 20 64 |e.progra|m, the d|
|00000500| 65 73 74 72 75 63 74 6f | 72 20 73 68 61 6c 6c 20 |estructo|r shall |
|00000510| 62 65 20 64 65 66 69 6e | 65 64 2e 20 49 66 20 61 |be defin|ed. If a|
|00000520| 20 63 6c 61 73 73 20 68 | 61 73 20 61 20 62 61 73 | class h|as a bas|
|00000530| 65 20 63 6c 61 73 73 20 | 77 69 74 68 20 61 0a 76 |e class |with a.v|
|00000540| 69 72 74 75 61 6c 20 64 | 65 73 74 72 75 63 74 6f |irtual d|estructo|
|00000550| 72 2c 20 69 74 73 20 64 | 65 73 74 72 75 63 74 6f |r, its d|estructo|
|00000560| 72 20 28 77 68 65 74 68 | 65 72 20 75 73 65 72 2d |r (wheth|er user-|
|00000570| 20 6f 72 20 69 6d 70 6c | 69 63 69 74 6c 79 2d 64 | or impl|icitly-d|
|00000580| 65 63 6c 61 72 65 64 29 | 20 69 73 0a 76 69 72 74 |eclared)| is.virt|
|00000590| 75 61 6c 2e 22 0a 0a 57 | 68 69 63 68 20 6d 65 61 |ual."..W|hich mea|
|000005a0| 6e 73 3a 20 59 6f 75 20 | 63 61 6e 6e 6f 74 20 68 |ns: You |cannot h|
|000005b0| 61 76 65 20 61 20 70 75 | 72 65 20 76 69 72 75 61 |ave a pu|re virua|
|000005c0| 6c 20 64 65 73 74 72 75 | 63 74 6f 72 20 69 6e 20 |l destru|ctor in |
|000005d0| 43 42 61 73 65 2e 20 49 | 74 20 63 61 6e 20 62 65 |CBase. I|t can be|
|000005e0| 0a 76 69 72 74 75 61 6c | 2c 20 74 68 6f 75 67 68 |.virtual|, though|
|000005f0| 2c 20 66 6f 72 20 61 20 | 76 69 72 74 75 61 6c 20 |, for a |virtual |
|00000600| 64 65 73 74 72 75 63 74 | 6f 72 20 73 74 69 6c 6c |destruct|or still|
|00000610| 20 63 6f 6d 65 73 20 77 | 69 74 68 20 61 20 64 65 | comes w|ith a de|
|00000620| 66 69 6e 69 74 69 6f 6e | 2e 0a 0a 2d 2d 20 0a 27 |finition|...-- .'|
|00000630| 6c 38 72 2c 0a 09 47 75 | 75 73 0a 2d 2d 2d 2d 2d |l8r,..Gu|us.-----|
|00000640| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000650| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000660| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000670| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000680| 2d 2d 2d 2d 2d 2d 0a 54 | 68 65 79 20 73 61 79 20 |------.T|hey say |
|00000690| 49 27 6d 20 77 69 6c 64 | 20 61 6e 64 20 49 27 6d |I'm wild| and I'm|
|000006a0| 20 72 65 63 6b 6c 65 73 | 73 2e 0a 20 20 20 20 2d | reckles|s.. -|
|000006b0| 2d 20 4a 69 6d 20 53 74 | 65 69 6e 6d 61 6e 20 28 |- Jim St|einman (|
|000006c0| 66 72 6f 6d 20 74 68 65 | 20 73 6f 6e 67 3a 20 45 |from the| song: E|
|000006d0| 76 65 72 79 74 68 69 6e | 67 20 6c 6f 75 64 65 72 |verythin|g louder|
|000006e0| 20 74 68 61 6e 20 65 76 | 65 72 79 74 68 69 6e 67 | than ev|erything|
|000006f0| 20 65 6c 73 65 29 0a 2d | 2d 2d 2d 2d 2d 2d 2d 2d | else).-|--------|
|00000700| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000710| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000720| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000730| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000740| 2d 2d 0a 0a 50 53 3a 20 | 43 68 65 63 6b 20 6f 75 |--..PS: |Check ou|
|00000750| 74 20 68 74 74 70 3a 2f | 2f 69 6e 66 6f 2e 64 65 |t http:/|/info.de|
|00000760| 73 79 2e 64 65 2f 75 73 | 65 72 2f 70 72 6f 6a 65 |sy.de/us|er/proje|
|00000770| 63 74 73 2f 43 2b 2b 2e | 68 74 6d 6c 2e 20 47 72 |cts/C++.|html. Gr|
|00000780| 65 61 74 20 70 61 67 65 | 20 6f 6e 20 43 2b 2b 2e |eat page| on C++.|
|00000790| 0a 49 74 27 73 20 6f 6e | 20 6f 66 20 6d 79 20 66 |.It's on| of my f|
|000007a0| 61 76 6f 72 69 74 20 62 | 6f 6f 6b 6d 61 72 6b 73 |avorit b|ookmarks|
|000007b0| 21 0a | |!. | |
+--------+-------------------------+-------------------------+--------+--------+
