Create new object (synchronous constructor)

(newobject)
newobject [instructions]
(newobject [instructions] expression1 expression2 ...)
newobject function
(newobject function expression1 expression2 ...)

(newo)
newo [instructions]
(newo [instructions] expression1 expression2 ...)
newo function
(newo function expression1 expression2 ...)

Creates new object. A list of instructions or a function passed as an argument is used as constructor of the new object. The turtle/object which called the newobject instruction is waiting for the new object's constructor completion before it continues its own code. The constructor's arguments can be passed as optional expressions.

Object in POOL is a simplified version of a turtle. Objects do not have graphics representation and do not handle events related to graphics (e.g. mouse clicks). Objects use less memory, they are created faster and also execute their tasks faster than turtles.

Example 1:

"t := (newo)
print who
print children
print parent @ :t
print who @ :t

Output:

first
[o1]
first
o1

Example 2:

"t := newo [
"x := 10
print who
]
print :x @ :t

Output:

o1
10

Example 3:

to model :x
  to fn
    op :variable^2
  end
  let "variable :x
  (print who :x)
end

"t := (newo $model 5)
print fn @ :t

Output:

model1 5
25

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