Operadores y funciones

Operators and functions

• definition: arithmetic operators, concatenation operators, comparison, logical and bitwise operators.

• caution: predecease, position matter.

• logical operators: boolean 2 values, True or False wrote by George Boole 18th century. Although defined 6 boolean Nor (both False), And (both true), Or (only need one true).

  

        person = GetPersonOverThere()

        colHair = GetHairColour(person)

  

        if((IsGirl(person)) and (colHair == Blond or colHair == Brunette) and (Age(person) >= 18)):

                neighbour = GetAdjacentPerson(person)

                if(not IsGuy(neighbour) or not LooksStrong(neighbour)):

                        print("Hey baby, you like Heineken?")

                else:

                        RotateAngleOfVision 5.0

• functions and procedures: encapsulation functions wrap up nasty bits of code so we dont have to bother with it (math.sin()). How do functions/procedures/methods behave? encapsulate and blend seamlessly into written code. Must be able to receive and return variables.

  

        import rhinoscriptsyntax as rs

        import time

        #This script will rename an object using the current system time

        strObjectID = rs.GetObject("Select an object to rename",0,False,True)

        if strObjectID:         # check if is none

                strNewName = "Time: " + str(time.localtime())

                rs.ObjectName(strObjectID, strNewName)

• advance function syntax: by default every function return None if do not specify it. Return value to the function. Arguments function declaration.

  

        def lockcurves_nofail():

                curves = rs.ObjectsByType(rs.filter.curve)

                if not curves: return False     # condition for avoid failure, abort operation if not provide the correct data

                rs.LockObjects(curves)

                return True

• mutability: Variables and tuples are considered immutable unless you create a new variable or copy over top of the old variable. List and dictionaries are consider mutable can be modified once they have been created, add, remove, slice values.