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Annotation of 43BSD/contrib/icon/man/cat2/pdco.2, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: 
        !             4: PDCO(2)               Icon Program Library                PDCO(2)
        !             5: 
        !             6: 
        !             7: 
        !             8: NNNNAAAAMMMMEEEE
        !             9:      pdco - programmer-defined control operations
        !            10: 
        !            11: DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
        !            12:      These procedures are taken mainly from TR 82-8, which
        !            13:      describes how co-expressions can be used to model the
        !            14:      built-in control structures of Icon and also provide new
        !            15:      ones. Some procedures have been corrected or improved and
        !            16:      there are additions.
        !            17: 
        !            18: SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
        !            19:      AAAAlllltttt{{{{eeee1111,,,,eeee2222}}}}          models eeee1111 |||| eeee2222
        !            20:      CCCCoooollllsssseeeeqqqq{{{{eeee1111,,,,eeee2222,,,, ...}}}}  produces results of eeee1111, eeee2222, ... alternately
        !            21:      CCCCoooommmmsssseeeeqqqq{{{{eeee1111,,,,eeee2222}}}}       compares result sequences of eeee1111 and eeee2222
        !            22:      CCCCoooonnnndddd{{{{eeee1111,,,,eeee2222,,,, ...}}}}    generalized Lisp conditional
        !            23:      EEEEvvvveeeerrrryyyy{{{{eeee1111,,,,eeee2222}}}}        models eeeevvvveeeerrrryyyy eeee1111 ddddoooo eeee2222
        !            24:      GGGGaaaalllltttt{{{{eeee1111,,,,eeee2222,,,, ...}}}}    generalized alternation: eeee1111 |||| eeee2222 |||| ...
        !            25:      LLLLccccoooonnnndddd{{{{eeee1111,,,,eeee2222,,,, ...}}}}   Lisp conditional
        !            26:      LLLLiiiimmmmiiiitttt{{{{eeee1111,,,,eeee2222}}}}        models eeee1111 \\\\ eeee2222
        !            27:      RRRRaaaannnnsssseeeeqqqq{{{{eeee1111,,,,eeee2222,,,, ...}}}}  produces results of eeee1111, eeee2222, ... at random
        !            28:      RRRReeeeppppaaaalllltttt{{{{eeee}}}}           models ||||eeee
        !            29:      RRRReeeessssuuuummmmeeee{{{{eeee1111,,,,eeee2222,,,,eeee3333}}}}    models eeeevvvveeeerrrryyyy eeee1111 \\\\ eeee2222 ddddoooo eeee3333
        !            30:      SSSSeeeelllleeeecccctttt{{{{eeee1111,,,,eeee2222}}}}       produces results from eeee1111 by position according to eeee2222
        !            31: 
        !            32: BBBBUUUUGGGGSSSS AAAANNNNDDDD DDDDEEEEFFFFIIIICCCCIIIIEEEENNNNCCCCIIIIEEEESSSS
        !            33:      Because of the handling of the scope of local identifiers in
        !            34:      co-expressions, expressions in programmer-defined control
        !            35:      operations cannot communicate through local identifiers. The
        !            36:      results produced by programmer-defined control operations
        !            37:      are always dereferenced. Some constructions, such as bbbbrrrreeeeaaaakkkk
        !            38:      and rrrreeeettttuuuurrrrnnnn, cannot be used in arguments to programmer-
        !            39:      defined control operations. See TR 82-8 for details of these
        !            40:      problems.
        !            41: 
        !            42: RRRREEEEQQQQUUUUIIIIRRRREEEEMMMMEEEENNNNTTTTSSSS
        !            43:      _P_d_c_o requires the experimental extensions in Version 5.9 of
        !            44:      Icon.
        !            45: 
        !            46: SSSSEEEEEEEE AAAALLLLSSSSOOOO
        !            47:      pdae(2)
        !            48: 
        !            49:      Griswold, Ralph E., Robert K. McConeghy, and William H.
        !            50:      Mitchell.  _E_x_t_e_n_s_i_o_n_s _t_o _V_e_r_s_i_o_n _5 _o_f _t_h_e _I_c_o_n _P_r_o_g_r_a_m_m_i_n_g
        !            51:      _L_a_n_g_u_a_g_e, TR 84-10a, Department of Computer Science, The
        !            52:      University of Arizona, 1984.
        !            53: 
        !            54: AAAAUUUUTTTTHHHHOOOORRRRSSSS
        !            55:      Ralph E. Griswold and Michael Novak
        !            56: 
        !            57: 
        !            58: 
        !            59: 
        !            60: 
        !            61: 
        !            62: 
        !            63: Version 5.9    The University of Arizona - 8/16/84              1
        !            64: 
        !            65: 
        !            66: 

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