send_string
send_string — transmits strings for evaluation.
Syntax
send_string (task, string)
Arguments
- task
A task descriptor as assigned to a
locate_task
call.
- string
Returns
A result depending on the receiving task.
Description
This function transmits the string via
synchronous interprocess communication to a non-Cascade DataHub
receiving task. The
task processes the message and returns a
result based on that processing. If the
task is a Gamma process, the message
will be interpreted as a Lisp expression and evaluated. The
return value will be the result of that evaluation. If an error
occurs during the evaluation, an expression of the form: (error
"error message") will be returned. If the message could not be
delivered, nil is returned.
Example
Gamma> a = 5;
5
Gamma> b = 6;
5
Gamma> send_string(task,string("(+",a," ",b,")"));
11
