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Top Forums Shell Programming and Scripting HELP unsetting array element in loop Post 302419848 by pseudocoder on Sunday 9th of May 2010 10:14:38 PM
Old 05-09-2010
Quote:
Originally Posted by msf5042
I was thinking of making a counter that increments with the loop and doing unset $dirs[$counter]
I don't know if this is an option for you, but you could create another array and store the counter values (array postions which need to be deleted) and do the unset thing in a second for loop when the first for loop ends.
 
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unset(1T)						       Tcl Built-In Commands							 unset(1T)

__________________________________________________________________________________________________________________________________________________

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 doesn't 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(1T), trace(1T), upvar(1T) KEYWORDS
remove, variable ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl 8.4 unset(1T)

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