return in function

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# 1  
Old 07-30-2009
return in function

I am using ksh. I want to know how can we make any function to return string or double value.
I dont want to use the global variables.
# 2  
Old 07-30-2009
You cannot return a string from a ksh function. This is one way to do what you want.

    echo "$1 is the first parameter"


result=$(myfunc "one" "two" "three")

# 3  
Old 07-30-2009
but it works for simple programs where there is only one echo. it wont work if i want to echo some other string..

For eg :
    echo "Inside myfunc()"
#  Do all the calc....
    echo "$1 is the first parameter"

result=$(myfunc "one" "two" "three")

And do you have any idea on how to return double values...

Thanks in adv.. Smilie

Next time use CODE tags when posting code, data or logs to enhance readability and to preserve formatting like indention etc., ty.

Last edited by zaxxon; 07-30-2009 at 08:09 AM.. Reason: code tags
# 4  
Old 07-30-2009
Do you mean like this?

# Reverse the parameters
echo "$3 $2 $1"
result=$(myfunc "one" "two" "three")
echo "Result is: ${result}"

Result is: three two one

# 5  
Old 07-30-2009
Lets c a simple eg:

echo "Hi there"
str="This is the string"
echo $str

now if I do ::
echo "Result is: ${result}"

It shows::
Result is: Hi there
This is the string

I need the output ::
Result is: This is the string

One more question..
What the procedure u all use to return a double value from a function.

# 6  
Old 07-30-2009
Why you have echo "Hi there" if you don't need it ?
If you like debug echo then print it to the stderr
  echo "Hi there" >&2

If you like to make function which return value, don't put anything else to the stdout.

Double ?
echo ...
to the stdout
are method always. Commandline stdout to the variable. Function works like commands if we look calling line.
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