Re: [Bug-apl] null as index does not extend to matrix

[Juergen Sauermann]

Hi Alex,

thanks, fixed in SVN 647.

/// Jürgen

On 07/14/2015 05:23 AM, address@hidden wrote:

Hi Bug APL,

The vector A can do index assignment when the index is a null:

      A←⍳3

      A

1 2 3

      A[0↑2 3]←0

      A

1 2 3

The matrix B does the same thing, only when both (for 2-D) indices in the matrix are null:

      B←3 3 ⍴⍳3

            B

1 2 3

1 2 3

1 2 3

      B[0↑1 2;0↑2 3]←0

      B

1 2 3

1 2 3

1 2 3

But if you have B[1;0↑2 3]←0  which "looks" like B[1;]←0 , but seems counter-intuitive because that is shorthand for B[1;1 2 3] ...the opposite of the null selection....  there is a large error:

==============================================================================

Assertion failed: pos < indices.size()

in Function:      get_value

in file:          IndexIterator.hh:112

Call stack:

----------------------------------------

-- Stack trace at IndexIterator.hh:112

----------------------------------------

0x7f14cea79ec5 __libc_start_main

0x4432d5  main

0x577b8d   Workspace::immediate_execution(bool)

0x48ce1a    Command::process_line()

0x48cef8     Command::do_APL_expression(UCS_string&)

0x497e9b      Executable::execute_body() const

0x524af0       StateIndicator::run()

0x4cd254        Prefix::reduce_statements()

0x4ce3e5         Prefix::reduce_V_C_ASS_B()

0x532c47          Symbol::assign_indexed(IndexExpr&, Value_P)

0x4a38a1           MultiIndexIterator::next()

0x4a3e47            

0x454682             do_Assert(char const*, char const*, char const*, int)

========================================

SI stack:

Depth:    0

Exec:     0x269a590

Safe ex:  no

Pmode:    ◊  B[1;0↑2 3]←0

PC:       10 ENDL

Stat:     B[1;0↑2 3]←0

err_code: 0x0

thrown:   at StateIndicator.cc:40

e_msg_1:  'No Error'

e_msg_2:  ''

e_msg_3:  ''

==============================================================================