Re: [Bug-apl] indexing precedence

[Juergen Sauermann]

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 <address@hidden> 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