Hi,
⍝ this is OK:
C10←2⍴⊂'AB12EF12IJ'
C10
AB12EF12IJ AB12EF12IJ
P10←(⊂2/⍳5)⊂¨C10
S10←P10∊¨⊂⊂'12'
S10
0 1 0 1 0 0 1 0 1 0
S10/¨P10
12 12 12 12
⍝ for a one element nested vector it ends in a stack trace:
C10←,⊂'AB12EF12IJ'
P10←(⊂2/⍳5)⊂¨C10
P10
AB 12 EF 12 IJ
⍴⊃P10
1 5
S10←P10∊¨⊂⊂'12'
S10
0 1 0 1 0
S10/¨P10
Incomplete value at Symbol.cc:130
Addr: 0xac2bd0
Rank: 0
Shape: ⊏⊐
Flags: --
First: ┏→━━━━━━━━━━━━━━━━━━━━━━━┓
┃┏→━┓ ┏→━┓ ┏→━┓ ┏→━┓ ┏→━┓┃
┃┃AB┃ ┃12┃ ┃EF┃ ┃12┃ ┃IJ┃┃
┃┗━━┛ ┗━━┛ ┗━━┛ ┗━━┛ ┗━━┛┃
┗∊━━━━━━━━━━━━━━━━━━━━━━━┛
Dynamic: DynamicObject: 0xac2bd8 (Value: 0xac2bd8) :
prev: 0xaeb418
next: 0xaef898
allocated: Bif_OPER1_EACH.cc:145
value history disabled
==============================================================================
Assertion failed: 0
in Function: assign
in file: Symbol.cc:133
Call stack:
----------------------------------------
-- Stack trace at Symbol.cc:133
----------------------------------------
0x7F10D4E37042 __libc_start_main
0x4E4996 main
0x678E43 Workspace::immediate_execution(bool)
0x53BD6A Command::process_line()
0x53BF16 Command::process_line(UCS_string&)
0x53E29F Command::do_APL_expression(UCS_string&)
0x53E61E Command::finish_context()
0x55C36D Executable::execute_body() const
0x61FB9C StateIndicator::run()
0x590B10 Prefix::reduce_statements()
0x592737 Prefix::reduce_A_F_B_()
0x56480D DerivedFunction::eval_AB(Value_P, Value_P)
0x52029E Bif_OPER1_EACH::eval_ALB(Value_P, Token&, Value_P)
0x65AEEB UserFunction::eval_ALB(Value_P, Token&, Value_P)
0x62C2AB Symbol::push_value(Value_P)
0x62AE9F Symbol::assign(Value_P, bool, char const*)
0x4FD105 do_Assert(char const*, char const*, char
const*, int)
========================================
SI stack:
Depth: 1
Exec: 0x7f3490
Safe exec: 0
Pmode: ∇ μ-Z__sA_LO_EACH_sB[1]
PC: 0 (8) 'μ-B
Stat: Z←⊂A LO B
err_code: 0x0
Depth: 0
Exec: 0xac25c0
Safe exec: 0
Pmode: ◊ S10/¨P10
PC: 4 (6) ENDL
Stat: S10/¨P10
err_code: 0x0
==============================================================================
Best Regards
Hans-Peter
