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Full Discussion: HELP unsetting array element in loop
Top Forums Shell Programming and Scripting HELP unsetting array element in loop Post 302419847 by msf5042 on Sunday 9th of May 2010 09:52:12 PM
Old 05-09-2010
HELP unsetting array element in loop
I have a loop and I need to be able to unset the array element that I am currently accessing in it. I was thinking of making a counter that increments with the loop and doing unset $dirs[$counter] but if I do that I am not sure if the other members of the array would get shifted down in index (meaning that the second time I unset an element I would unset the element in front of the one that I actually want to unset).

Any help is appreciated.

Code:
for x in ${dirs[@]}
do
if [[ $x == $dir* ]]; then
bool=1
# here I need to do unset $dirs[????]....
fi
done

 

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LEARN ABOUT SUSE

unset

unset(n)						       Tcl Built-In Commands							  unset(n)

__________________________________________________________________________________________________________________________________________________

NAME

       unset - Delete variables

SYNOPSIS

       unset ?-nocomplain? ?--? ?name name name ...?
_________________________________________________________________

DESCRIPTION

       This  command removes one or more variables.  Each name is a variable name, specified in any of the ways acceptable to the set command.	If
       a name refers to an element of an array then that element is removed without affecting the rest of the array.  If a  name  consists  of	an
       array name with no parenthesized index, then the entire array is deleted.  The unset command returns an empty string as result.	If -nocom-
       plain is specified as the first argument, any possible errors are suppressed.  The option may not be abbreviated, in order to  disambiguate
       it  from possible variable names.  The option -- indicates the end of the options, and should be used if you wish to remove a variable with
       the same name as any of the options.  If an error occurs, any variables after the named one causing the error not deleted.   An	error  can
       occur  when the named variable does not exist, or the name refers to an array element but the variable is a scalar, or the name refers to a
       variable in a non-existent namespace.

EXAMPLE

       Create an array containing a mapping from some numbers to their squares and remove the array elements for non-prime numbers:
	      array set squares {
		  1 1	 6 36
		  2 4	 7 49
		  3 9	 8 64
		  4 16	 9 81
		  5 25	10 100
	      }

	      puts "The squares are:"
	      parray squares

	      unset squares(1) squares(4) squares(6)
	      unset squares(8) squares(9) squares(10)

	      puts "The prime squares are:"
	      parray squares

SEE ALSO

       set(n), trace(n), upvar(n)

KEYWORDS

       remove, variable

Tcl									8.4								  unset(n)
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