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open in: 
MacOS 8.1
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Win98
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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 6d 6f | 72 6d 6f 6e 2e 63 73 2e |Path: mo|rmon.cs.|
|00000010| 62 79 75 2e 65 64 75 21 | 63 6f 6f 6b 64 0a 46 72 |byu.edu!|cookd.Fr|
|00000020| 6f 6d 3a 20 44 6f 75 67 | 6c 61 73 20 45 76 61 6e |om: Doug|las Evan|
|00000030| 20 43 6f 6f 6b 20 3c 63 | 6f 6f 6b 64 40 63 73 2e | Cook <c|ookd@cs.|
|00000040| 62 79 75 2e 65 64 75 3e | 0a 4e 65 77 73 67 72 6f |byu.edu>|.Newsgro|
|00000050| 75 70 73 3a 20 63 6f 6d | 70 2e 6c 61 6e 67 2e 61 |ups: com|p.lang.a|
|00000060| 64 61 2c 63 6f 6d 70 2e | 6c 61 6e 67 2e 63 2b 2b |da,comp.|lang.c++|
|00000070| 2c 63 6f 6d 70 2e 6c 61 | 6e 67 2e 63 2c 63 6f 6d |,comp.la|ng.c,com|
|00000080| 70 2e 6c 61 6e 67 2e 6d | 6f 64 75 6c 61 33 2c 63 |p.lang.m|odula3,c|
|00000090| 6f 6d 70 2e 6c 61 6e 67 | 2e 6d 6f 64 75 6c 61 32 |omp.lang|.modula2|
|000000a0| 0a 53 75 62 6a 65 63 74 | 3a 20 52 65 3a 20 48 75 |.Subject|: Re: Hu|
|000000b0| 6e 67 61 72 69 61 6e 20 | 6e 6f 74 61 74 69 6f 6e |ngarian |notation|
|000000c0| 0a 44 61 74 65 3a 20 4d | 6f 6e 2c 20 32 39 20 4a |.Date: M|on, 29 J|
|000000d0| 61 6e 20 31 39 39 36 20 | 32 30 3a 32 30 3a 32 38 |an 1996 |20:20:28|
|000000e0| 20 2d 30 37 30 30 0a 4f | 72 67 61 6e 69 7a 61 74 | -0700.O|rganizat|
|000000f0| 69 6f 6e 3a 20 42 72 69 | 67 68 61 6d 20 59 6f 75 |ion: Bri|gham You|
|00000100| 6e 67 20 55 6e 69 76 65 | 72 73 69 74 79 0a 4d 65 |ng Unive|rsity.Me|
|00000110| 73 73 61 67 65 2d 49 44 | 3a 20 3c 50 69 6e 65 2e |ssage-ID|: <Pine.|
|00000120| 48 50 50 2e 33 2e 39 31 | 2e 39 36 30 31 32 39 32 |HPP.3.91|.9601292|
|00000130| 30 31 38 33 35 2e 38 37 | 35 35 41 2d 31 30 30 30 |01835.87|55A-1000|
|00000140| 30 30 40 6d 6f 72 6d 6f | 6e 2e 63 73 2e 62 79 75 |00@mormo|n.cs.byu|
|00000150| 2e 65 64 75 3e 0a 52 65 | 66 65 72 65 6e 63 65 73 |.edu>.Re|ferences|
|00000160| 3a 20 3c 33 30 43 34 30 | 46 37 37 2e 35 33 42 35 |: <30C40|F77.53B5|
|00000170| 40 73 77 73 62 62 73 2e | 63 6f 6d 3e 20 3c 34 63 |@swsbbs.|com> <4c|
|00000180| 76 75 36 38 24 32 6a 62 | 40 6d 61 63 61 77 2e 63 |vu68$2jb|@macaw.c|
|00000190| 79 62 65 72 70 6f 72 74 | 2e 63 6f 6d 3e 20 3c 34 |yberport|.com> <4|
|000001a0| 64 32 31 6f 67 24 69 61 | 62 40 6e 65 77 73 2e 78 |d21og$ia|b@news.x|
|000001b0| 6d 69 73 73 69 6f 6e 2e | 63 6f 6d 3e 20 3c 34 64 |mission.|com> <4d|
|000001c0| 32 6f 6b 30 24 36 39 73 | 40 62 65 61 63 68 2e 61 |2ok0$69s|@beach.a|
|000001d0| 6e 64 2e 6e 6c 3e 20 3c | 34 64 74 76 33 67 49 4e |nd.nl> <|4dtv3gIN|
|000001e0| 4e 6f 39 75 40 6b 65 61 | 74 73 2e 75 67 72 61 64 |No9u@kea|ts.ugrad|
|000001f0| 2e 63 73 2e 75 62 63 2e | 63 61 3e 20 3c 34 65 35 |.cs.ubc.|ca> <4e5|
|00000200| 6b 36 6f 24 61 63 69 40 | 67 72 69 64 2e 64 69 72 |k6o$aci@|grid.dir|
|00000210| 65 63 74 2e 63 61 3e 20 | 3c 34 65 6a 30 64 73 24 |ect.ca> |<4ej0ds$|
|00000220| 73 6a 75 40 72 61 74 69 | 6f 6e 61 6c 2e 72 61 74 |sju@rati|onal.rat|
|00000230| 69 6f 6e 61 6c 2e 63 6f | 6d 3e 0a 4e 4e 54 50 2d |ional.co|m>.NNTP-|
|00000240| 50 6f 73 74 69 6e 67 2d | 48 6f 73 74 3a 20 6d 6f |Posting-|Host: mo|
|00000250| 72 6d 6f 6e 2e 63 73 2e | 62 79 75 2e 65 64 75 0a |rmon.cs.|byu.edu.|
|00000260| 4d 69 6d 65 2d 56 65 72 | 73 69 6f 6e 3a 20 31 2e |Mime-Ver|sion: 1.|
|00000270| 30 0a 43 6f 6e 74 65 6e | 74 2d 54 79 70 65 3a 20 |0.Conten|t-Type: |
|00000280| 54 45 58 54 2f 50 4c 41 | 49 4e 3b 20 63 68 61 72 |TEXT/PLA|IN; char|
|00000290| 73 65 74 3d 55 53 2d 41 | 53 43 49 49 0a 49 6e 2d |set=US-A|SCII.In-|
|000002a0| 52 65 70 6c 79 2d 54 6f | 3a 20 3c 34 65 6a 30 64 |Reply-To|: <4ej0d|
|000002b0| 73 24 73 6a 75 40 72 61 | 74 69 6f 6e 61 6c 2e 72 |s$sju@ra|tional.r|
|000002c0| 61 74 69 6f 6e 61 6c 2e | 63 6f 6d 3e 20 0a 0a 4f |ational.|com> ..O|
|000002d0| 6e 20 32 39 20 4a 61 6e | 20 31 39 39 36 2c 20 42 |n 29 Jan| 1996, B|
|000002e0| 6f 62 20 4b 69 74 7a 62 | 65 72 67 65 72 20 77 72 |ob Kitzb|erger wr|
|000002f0| 6f 74 65 3a 0a 0a 3e 20 | 71 6a 61 63 6b 73 6f 6e |ote:..> |qjackson|
|00000300| 40 64 69 72 65 63 74 2e | 63 61 20 77 72 6f 74 65 |@direct.|ca wrote|
|00000310| 3a 0a 3e 20 3a 20 49 20 | 75 73 65 20 74 79 70 65 |:.> : I |use type|
|00000320| 64 65 66 20 70 72 69 6d | 61 72 69 6c 79 20 69 66 |def prim|arily if|
|00000330| 20 49 20 6b 6e 6f 77 20 | 74 68 61 74 20 61 6e 20 | I know |that an |
|00000340| 75 6e 64 65 72 6c 79 69 | 6e 67 20 64 61 74 61 20 |underlyi|ng data |
|00000350| 74 79 70 65 20 6d 69 67 | 68 74 0a 3e 20 3a 20 63 |type mig|ht.> : c|
|00000360| 68 61 6e 67 65 20 61 74 | 20 73 6f 6d 65 20 70 6f |hange at| some po|
|00000370| 69 6e 74 20 69 6e 20 74 | 68 65 20 66 75 74 75 72 |int in t|he futur|
|00000380| 65 2c 20 61 6e 64 20 49 | 20 77 61 6e 74 20 74 6f |e, and I| want to|
|00000390| 20 68 61 76 65 20 6f 6e | 65 20 63 65 6e 74 72 61 | have on|e centra|
|000003a0| 6c 20 77 61 79 0a 3e 20 | 3a 20 6f 66 20 63 68 61 |l way.> |: of cha|
|000003b0| 6e 67 69 6e 67 20 69 74 | 2e 20 20 5b 2e 2e 2e 5d |nging it|. [...]|
|000003c0| 0a 3e 20 2e 2e 2e 0a 3e | 20 3a 20 44 61 74 61 20 |.> ....>| : Data |
|000003d0| 61 62 73 74 72 61 63 74 | 69 6f 6e 2e 0a 3e 20 0a |abstract|ion..> .|
|000003e0| 3e 20 54 68 61 74 20 62 | 65 61 72 73 20 61 73 20 |> That b|ears as |
|000003f0| 6d 75 63 68 20 72 65 73 | 65 6d 62 6c 61 6e 63 65 |much res|emblance|
|00000400| 20 74 6f 20 64 61 74 61 | 20 61 62 73 74 72 61 63 | to data| abstrac|
|00000410| 74 69 6f 6e 20 61 73 20 | 4d 63 44 6f 6e 61 6c 64 |tion as |McDonald|
|00000420| 27 73 20 62 65 61 72 73 | 0a 3e 20 74 6f 20 66 69 |'s bears|.> to fi|
|00000430| 6e 65 20 64 69 6e 69 6e | 67 2e 20 20 59 6f 75 20 |ne dinin|g. You |
|00000440| 61 72 65 20 75 73 69 6e | 67 20 74 68 65 20 70 72 |are usin|g the pr|
|00000450| 69 6d 69 74 69 76 65 20 | 6c 61 6e 67 75 61 67 65 |imitive |language|
|00000460| 20 74 79 70 65 73 2c 20 | 61 6e 64 20 6f 6e 6c 79 | types, |and only|
|00000470| 0a 3e 20 69 6e 20 74 68 | 6f 73 65 20 73 70 65 63 |.> in th|ose spec|
|00000480| 69 61 6c 20 63 61 73 65 | 73 20 77 68 65 72 65 20 |ial case|s where |
|00000490| 79 6f 75 20 62 65 6c 69 | 65 76 65 20 74 68 61 74 |you beli|eve that|
|000004a0| 20 61 20 74 79 70 65 20 | 77 69 6c 6c 20 63 68 61 | a type |will cha|
|000004b0| 6e 67 65 20 64 6f 0a 3e | 20 79 6f 75 20 69 6e 74 |nge do.>| you int|
|000004c0| 72 6f 64 75 63 65 20 61 | 6e 20 61 6c 69 61 73 20 |roduce a|n alias |
|000004d0| 66 6f 72 20 74 68 65 20 | 74 79 70 65 20 6e 61 6d |for the |type nam|
|000004e0| 65 2e 20 20 54 68 61 74 | 20 69 73 20 6e 6f 74 20 |e. That| is not |
|000004f0| 61 62 73 74 72 61 63 74 | 69 6f 6e 2e 0a 3e 20 54 |abstract|ion..> T|
|00000500| 68 65 20 74 65 72 6d 20 | 22 61 62 73 74 72 61 63 |he term |"abstrac|
|00000510| 74 69 6f 6e 22 20 6d 65 | 61 6e 73 20 74 6f 20 65 |tion" me|ans to e|
|00000520| 6d 70 68 61 73 69 7a 65 | 20 74 68 65 20 65 73 73 |mphasize| the ess|
|00000530| 65 6e 74 69 61 6c 20 61 | 73 70 65 63 74 73 20 61 |ential a|spects a|
|00000540| 6e 64 0a 3e 20 64 65 2d | 65 6d 70 68 61 73 69 7a |nd.> de-|emphasiz|
|00000550| 65 20 74 68 65 20 69 6e | 65 73 73 65 6e 74 69 61 |e the in|essentia|
|00000560| 6c 20 2d 2d 20 69 2e 65 | 2e 20 74 68 65 20 75 73 |l -- i.e|. the us|
|00000570| 65 72 20 6f 66 20 61 20 | 6d 6f 64 75 6c 65 20 28 |er of a |module (|
|00000580| 41 44 54 2c 20 70 61 63 | 6b 61 67 65 2c 0a 3e 20 |ADT, pac|kage,.> |
|00000590| 63 6c 61 73 73 2c 20 65 | 74 63 2e 29 20 73 65 65 |class, e|tc.) see|
|000005a0| 73 20 74 68 65 20 61 62 | 73 74 72 61 63 74 69 6f |s the ab|stractio|
|000005b0| 6e 2c 20 61 6e 64 20 79 | 6f 75 2c 20 74 68 65 20 |n, and y|ou, the |
|000005c0| 69 6d 70 6c 65 6d 65 6e | 74 6f 72 20 6f 66 0a 3e |implemen|tor of.>|
|000005d0| 20 74 68 65 20 6d 6f 64 | 75 6c 65 2f 41 44 54 2f | the mod|ule/ADT/|
|000005e0| 70 61 63 6b 61 67 65 2f | 63 6c 61 73 73 2c 20 68 |package/|class, h|
|000005f0| 69 64 65 20 74 68 65 20 | 69 6e 65 73 73 65 6e 74 |ide the |inessent|
|00000600| 69 61 6c 20 64 65 74 61 | 69 6c 73 2e 20 20 4f 6e |ial deta|ils. On|
|00000610| 65 0a 3e 20 6f 66 20 74 | 68 65 73 65 20 69 6e 65 |e.> of t|hese ine|
|00000620| 73 73 65 6e 74 69 61 6c | 20 64 65 74 61 69 6c 73 |ssential| details|
|00000630| 20 69 73 20 74 68 65 20 | 70 72 69 6d 69 74 69 76 | is the |primitiv|
|00000640| 65 20 74 79 70 65 20 28 | 6f 72 20 74 79 70 65 73 |e type (|or types|
|00000650| 29 20 74 68 61 74 0a 3e | 20 6d 61 6b 65 20 75 70 |) that.>| make up|
|00000660| 20 74 68 65 20 69 6e 6e | 65 72 20 77 6f 72 6b 69 | the inn|er worki|
|00000670| 6e 67 73 20 6f 66 20 79 | 6f 75 72 20 61 62 73 74 |ngs of y|our abst|
|00000680| 72 61 63 74 69 6f 6e 2e | 0a 0a 4d 61 79 62 65 20 |raction.|..Maybe |
|00000690| 6e 6f 74 2e 20 20 42 75 | 74 20 6e 6f 74 20 65 76 |not. Bu|t not ev|
|000006a0| 65 72 79 74 68 69 6e 67 | 20 66 61 6c 6c 73 20 75 |erything| falls u|
|000006b0| 6e 64 65 72 20 74 68 65 | 20 68 6f 6f 64 20 6f 66 |nder the| hood of|
|000006c0| 20 64 61 74 61 20 61 62 | 73 74 72 61 63 74 69 6f | data ab|stractio|
|000006d0| 6e 2e 20 20 0a 53 6f 6d | 65 62 6f 64 79 20 68 61 |n. .Som|ebody ha|
|000006e0| 73 20 74 6f 20 63 72 65 | 61 74 65 20 74 68 65 20 |s to cre|ate the |
|000006f0| 6d 6f 64 75 6c 65 2f 41 | 44 54 2f 70 61 63 6b 61 |module/A|DT/packa|
|00000700| 67 65 2f 63 6c 61 73 73 | 20 66 69 72 73 74 2c 20 |ge/class| first, |
|00000710| 61 6e 64 20 61 20 67 6f | 6f 64 20 77 61 79 20 0a |and a go|od way .|
|00000720| 74 6f 20 6d 61 69 6e 74 | 61 69 6e 20 69 74 20 69 |to maint|ain it i|
|00000730| 73 20 74 6f 20 75 73 65 | 20 61 20 74 79 70 65 64 |s to use| a typed|
|00000740| 65 66 20 6f 72 20 65 71 | 75 69 76 61 6c 65 6e 74 |ef or eq|uivalent|
|00000750| 2e 20 20 54 68 65 72 65 | 20 61 72 65 20 6d 79 20 |. There| are my |
|00000760| 32 63 2e 0a 0a 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |2c...===|========|
|00000770| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000780| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000790| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|000007a0| 3d 0a 44 6f 75 67 6c 61 | 73 20 43 6f 6f 6b 2c 20 |=.Dougla|s Cook, |
|000007b0| 75 6e 64 65 72 67 72 61 | 64 75 61 74 65 20 69 6e |undergra|duate in|
|000007c0| 20 43 6f 6d 70 75 74 65 | 72 20 53 63 69 65 6e 63 | Compute|r Scienc|
|000007d0| 65 20 61 74 20 42 59 55 | 0a 2d 2d 2d 2d 2d 2d 2d |e at BYU|.-------|
|000007e0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000007f0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000800| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000810| 2d 2d 2d 2d 2d 0a 54 68 | 69 73 20 73 65 6e 74 65 |-----.Th|is sente|
|00000820| 6e 63 65 20 69 73 20 66 | 61 6c 73 65 2e 0a 3d 3d |nce is f|alse..==|
|00000830| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000840| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000850| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000860| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 0a 0a |========|==.. |
+--------+-------------------------+-------------------------+--------+--------+
