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dileepkr
Level III

USER defined functions: Check if the function exists/loaded after Include

Hi Folks,

 

I am trying to figure out a way to check if a user defined function exists before calling it. Is there a way to do this check in JMP?

 

Eg: 

user_func.jsl:

user_func = Function ({},{},

.....

);

 

Main.jsl:

Include("C:\Documents\user_func.jsl")

.

down in the code

.

.

??How to check if user_func exists??

2 ACCEPTED SOLUTIONS

Accepted Solutions
txnelson
Super User

Re: USER defined functions: Check if the function exists/loaded after Include

You can use the IsEmpty() function.  See the example below;

Clear Symbols();
Show( Is Empty( user_func ) );
user_func = Function( {}, {} );
Show( Is Empty( user_func ) );
clear symbols();
Jim

View solution in original post

txnelson
Super User

Re: USER defined functions: Check if the function exists/loaded after Include

Here is how I would handle that case

func_name = "user_func";eval(parse("Show( Is Empty( " || func_name || ") ) ;"));
Jim

View solution in original post

5 REPLIES 5
txnelson
Super User

Re: USER defined functions: Check if the function exists/loaded after Include

You can use the IsEmpty() function.  See the example below;

Clear Symbols();
Show( Is Empty( user_func ) );
user_func = Function( {}, {} );
Show( Is Empty( user_func ) );
clear symbols();
Jim
dileepkr
Level III

Re: USER defined functions: Check if the function exists/loaded after Include

That worked, thank you very much !
dileepkr
Level III

Re: USER defined functions: Check if the function exists/loaded after Include

Hi Jim @txnelson ,

 

In another case, what to do if the function name is stored as a string in a variable?

 

Clear Symbols();
user_func = Function( {}, {} );
func_name = "user_func";

Show( Is Empty( Parse(func_name) ) ); //This doesnt work, any alternatives???
Clear Symbols();

 

txnelson
Super User

Re: USER defined functions: Check if the function exists/loaded after Include

Here is how I would handle that case

func_name = "user_func";eval(parse("Show( Is Empty( " || func_name || ") ) ;"));
Jim

Re: USER defined functions: Check if the function exists/loaded after Include

Names Default to Here( 1 );

user_func = Function( {}, Print( "I'm Here!" ) );
func_name = "user_func";

Show( Is Empty( Parse( func_name || "()" ) ) );