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Ada Core Technologies established in 1994. 1995: Academic Ada contract to Intermetrics>17 (The Mandate s EffectIn 1994, 33% of code written in Ada, 22% in C, 37% in  other approved languages  Many projects have ignored or manipulated the policy on waivers, employing languages other than Ada without the required waiver  (NRC), %)!The Mandate DestroyedBased on the NRC report, Ada no longer mandated (March 1997) But where s the $15 million/year? AJPO closed Sept 1998 xu\;+Why we STILL teach Ada at USAFA, ((( vClear syntax Supports software engineering principles Cheaper development costs Time constraints for cadets are large!&P'P'@0Steelman RequirementsAda 93% Java 72% C++ 68% C 53% "Ada, C, C++, and Java vs. The Steelman" David Wheeler, Institute for Defense Analysis, 1997$]6"6A1Comparing Costs (C)Development costs of Ada were roughly half those of C, with C code having an order of magnitude greater errors. 75% of the programmers were experienced in C, while only 25% were experienced in Ada. Stephen Ziegler, Rational Corp. "Comparing Development Costs of C and Ada" (K>IB2Comparing Costs (C++)Ada error rate was approximately 50% of the norm. Cost of delivery of Ada was lower. Reifer Consultants "Quantifying the Debate: Ada vs. C++" (V9HD & C3Comparing Costs (C++)Analysis of info systems and C3 systems showed Ada had a 35% advantage in front-end development costs and a 70% advanatage in maintenance costs. "Ada and C++: A Business Case Analysis" USAF Report. (TRW);>/> 7D4Comparing Languages (FAA)Evaluation included capability, efficiency, availability/reliability, maintainability/ extensibility, lifecycle cost, and risk. Ada 78.8 C++ 63.9 C 59.5 FORTRAN 47.0 Software Engineering Institute (for FAA)"ZbZ]G6Comparing Ada and Java  Concludes Java is more difficult to teach to intro programmers because of complex syntax for simple programs, lack of pointers, difficulties with types. http://www.act-europe.fr/texts/papers/ada-java-teaching-comp.pdf (Brosgol) (K,@F5Eliminating Bugs"My Hairiest Bug War Stories" CACM April 1997. Ada compilers unaided would have caught 88% of these bugs. John McCormick ("Ada Kills Hairy Bugs")k*,0KH7Languages in CS1Ada instructors believed their current language was best at a ratio of 3-4x over C and C++ instructors. http://academic.scranton.edu/faculty/beidler/ levy/ (h4$l% ?/Nobody uses Ada Ada is used in lots of surprising places, including the NYC Subway and the Hertz navigation system. http://www.seas.gwu.edu/~mfeldman/ada-project-summary.html (d;$a:>.Ada in UniversitiesApproximately 150 universities use Ada in 1st or 2nd computer science course Number relatively constant over last couple of years http://www.seas.gwu.edu/~mfeldman/ada-foundation.html 6+,#\5 0 AP BoardStarts in Pascal (first offered 1984) Moves to C++ in 1998-1999 (despite open opposition from ACM educators) Moves to Java in 2003-2004O?'What kinds of tools are we looking for?(((^Cheap Simple Powerful Must compare favorably with Visual Studio, freely available Java tools=-/Tools to Support Ada in Education and Elsewhere00( GNAT/AdaGIDE J9Leveraging Technology with Ada(JGNAT Connect Four applet demoK:Leveraging Technology with Ada(qGtk/GLADE/GVD Primarily Linux based, but Windows version XML based GUI builder Multi-language debugging platform &ddoM<Leveraging Technology with Ada(SRAPID Multi-platform GUI builder http://www.usafa.af.mil/dfcs/bios/carlisle.html 22N)(N=Leveraging Technology with Ada(\CLAW Windows GUI builder Free demo, pay for full version RR software (www.rrsoftware.com) 25#XGP>Leveraging Technology with Ada(MGWindows Free OO Windows library Currently no GUI builder www.adapower.com 2 2 E$3L;Leveraging Technology with Ada(@GNATCOM MS reusable object technology http://www.adapower.com 29./6789:E  ` ̙33` ` ff3333f` 333MMM` f` f` 3>?" dd@,|?" dd@   " @ ` n?" dd@   @@``PR    @ ` ` p>> v(    6v P  T Click to edit Master title style! !  0/   RClick to edit Master text styles Second level Third level Fourth level Fifth level!     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H0(  Hx H c $\kP  k x H c $k k H H 0޽h ? ___PPT10i.l5Vh+D=' = @B +$  $(  r  S %`PP  ` r  S &` ` H  0޽h ? 80___PPT10.m5qC$  ($(  (r ( S ,` P  ` r ( S P` ` H ( 0޽h ? 80___PPT10.aK]0  00(  0x 0 c $` P  ` x 0 c $t` ` H 0 0޽h ? 80___PPT10.aK]0  80(  8x 8 c $` P  ` x 8 c $X` ` H 8 0޽h ? 80___PPT10.aK]0  @0(  @x @ c $` P  ` x @ c $` ` H @ 0޽h ? 80___PPT10.aK]0  D0(  Dx D c $hh` P  ` x D c $$i` ` H D 0޽h ? 80___PPT10.aK]0  40(  4x 4 c $Lo` P  ` x 4 c $p` ` H 4 0޽h ? 80___PPT10.aK]* 0 NF(  X  C    F  S C 0   See http://www.pogo.org/mici/products/camrpt.htm and http://www.senate.gove/~grassley/releases/1997/pr12-04.htm for more info on the 1980s Project on Military Procurement %{H  0޽h ? 3380___PPT10.1Yu 0 (  X  C      S hK 0   QFrom Ada 83 LRM, http://www.adahome.com/LRM/83/RM/rm83html/lrm-FORE.html#ForewordJH  0޽h ? 3380___PPT10.1R 0  (  X  C      S  R 0   Thttp://archive.adaic.com/pol-hist/policy/mandate.txt  Notwithstanding any other provisions of law, where cost effective, all Department of Defense software shall be written in the programming language Ada, in the absence of special exemption by an official designated by the Secretary of Defense." $4_H  0޽h ? 3380___PPT10.1 fR 0 0b(  X  C      S [ 0   d6http://sw-eng.falls-church.va.us/nrc/nrc-contents.html6H  0޽h ? 3380___PPT10.1e  0 F>P(  X  C    >  S  0   http://www.cs.duke.edu/~ola/bio.html (first offered 1984) http://www.cs.williams.edu/~kim/APCS.html over 5 years in preparing for change to C++.,".H  0޽h ? 3380___PPT10.10g . 0 @(  X  C       S L 0     Lt Col Gibson: Here are some things that may be of use when defending our decision to continue with Ada. See below for supporting data. Conclusions: 1) Ada, while not extensively used, is still being used for significant projects. 2) Ada is taught at a number of other universities 3) Ada is more capable than other languages 4) Ada has quicker development with fewer errors, even for inexperienced programmers-- a big win ina service academy environment. --Marty Data on other schools teaching Ada (150): http://www.seas.gwu.edu/~mfeldman/ada-foundation.html A comparison of Ada and Java as foundation teaching languages: http://www.act-europe.fr/texts/papers/ada-java-teaching-comp.pdf Concludes Java is more difficult to teach to intro programmers because of complex syntax for simple programs, lack of pointers, difficulties with types. A survey of Computer Language use in CS1: http://academic.scranton.edu/faculty/beidler/levy/ Note in particular that Ada instructors believed their current language was best at a ratio of 3-4x over C and C++ instructors. A list of projects using Ada: http://www.seas.gwu.edu/~mfeldman/ada-project-summary.html Note that Ada is used in lots of surprising places, including a new project on the NYC Subway. "Ada, C, C++, and Java vs. The Steelman" David Wheeler, Institute for Defense Analysis, 1997 concluded that Ada covered 93% of the Steelman requirements for High Order languages, Java 72%, C++ 68%, C 53%. Stephen Ziegler, Rational Corp. "Comparing Development Costs of C and Ada" development costs of Ada were roughly half those of C, with C code having an order of magnitude greater errors. 75% of the programmers were experienced in C, while only 25% were experienced in Ada. Reifer Consultants "Quantifying the Debate: Ada vs. C++" Ada error rate was approximately 50% of the norm. Cost of delivery of Ada was lower. John McCormick re: "My Hairiest Bug War Stories", CACM April 1997 ("Ada Kills Hairy Bugs"). Ada compilers unaided would have caught 88% of these bugs. Software Engineering Institute evaluated high order languages for the FAA including capability, efficiency, availability/reliability, maintainability/extensibility, lifecycle cost, and risk. Scores (out of 100), Ada 78.8, C++ 63.9, C 59.5, FORTRAN 47.0 "Ada and C++: A Business Case Analysis" USAF Report. TRW analysis of info systems and C3 systems showed Ada had a 35% advantage in front-end development costs and a 70% advanatage in maintenance costs. 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