Apologies, Ed is right.
for (i in array_A) len++ and length(array) works length(array_A) doesn't
work in a function. Thanks!
Rajan
"Ed Morton" <morton@[EMAIL PROTECTED]
> wrote in message
news:47E6E6C6.9040502@[EMAIL PROTECTED]
>
>
> On 3/23/2008 6:16 PM, Rajan wrote:
>
> [please don't top-post, fixed below]
>
>>
>> "Hermann Peifer" <peifer@[EMAIL PROTECTED]
> wrote in message
>> news:47DBAE29.4050709@[EMAIL PROTECTED]
>>
>>>Hi All,
>>>
>>>The Gawk man page says:
>>>
>>>>Starting with version 3.1.5, as a non-standard extension,
>>>>with an array argument, length() returns the number
>>>>of elements in the array.
>>>
>>>It looks like Gawk's length(array) extension does not work inside
>>>functions. Is this a bug or feature or am I missing something? See the
>>>example below. I am using GNU Awk 3.1.6
>>>
>>>$ cat testdata
>>>CD NAME
>>>AT Austria
>>>BG Bulgaria
>>>CH Switzerland
>>>DE Germany
>>>EE Estonia
>>>FR France
>>>GR Greece
>>>
>>>$ cat test.awk
>>>
>>># Populate array
>>>NR > 1 { array[$1] = $2 }
>>>
>>># Print array length and call function A
>>>END { print "array:",length(array) ; A(array) }
>>>
>>>function A(array_A) { print "array_A:", length(array_A) }
>>>
>>>$ gawk -f test.awk testdata
>>>array: 7
>>>gawk: test.awk:8: (FILENAME=data FNR=8) fatal: attempt to use array
>>>`array_A (from array)' in a scalar context
>>>
>>>BTW, there is no such error if I have asort(array_A) or asorti(array_A)
>>>inside the function.
>>>
>>>Hermann
>>
>> You cannot pass an array as an argument to a function.
>
> Of course you can.
>
>> However, variables in
>> awk are in general global, so you can use the actual variable name in
the
>> function.
>
> That doesn't help when you're performing the same operation on multiple
> variables.
>
> Ed.
>
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