Re: [Bug-apl] indexing precedence

Wed, 15 Feb 2017 13:15:46 -0800

Hi Xiao-Yong,

I know, there are a few differences between APL2 and the ISO standard. In such cases
APL2 rules because a standard which is not implemented is less useful than an implementation
of it.



/// Jürgen



On 02/15/2017 09:44 PM, Xiao-Yong Jin wrote:
ISO/IEC 13751:2000(E) disagrees.
On page 158, section 10.2.14 Indexed Reference,
there is an example
      1 2 3[2]
2


On Feb 15, 2017, at 2:22 PM, Juergen Sauermann <[email protected]> wrote:

Hi Xiao-Yong,

IBM APL2.

[] binds stronger than anything else.

Thus 3[1 2] is evaluated first, giving the RANK ERROR.

/// Jürgen


On 02/15/2017 09:14 PM, Xiao-Yong Jin wrote:

Feature or bug?

      1 2 3[2 1 3]
RANK ERROR
      1 2 3[2 1 3]
          ^^
      )sic
      (1 2 3)[2 1 3]
2 1 3






      

      



    

    

  























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