5. Control Flow Tools

Pythonect supports standard control flow tools, but with a twist!

5.1. Using Boolean Values as if Statement

There’s no if keyword in Pythonect, instead, boolean values are used to determine whether to terminate or continue the flow.

5.1.1. True as Pass-through

Whenever a Python expression or function returns True the current value in the flow is pushed to the next operation. For example:

1 -> [_ < 2] -> print

Will print 1, because the expression is evaluated to True (i.e. 1 < 2). Another example:

"Hello, world" -> _.startswith('Hello') -> print

Will print "Hello, world" because startswith method returned True (i.e. “Hello, world” string starts with “Hello” string).

5.1.2. False as Terminator

Whenever a Python expression or function returns False the current flow terminates and returns False. For example:

"Hello, world" -> _.startswith('ello') -> print

This will not print anything and return False.

5.1.3. Using Multithreading as elif and else

Since there’s no if, there’s also no elif or else, instead all possible flows are evaulated at once. For example:

"Hello, world" -> [[_.startswith('Hello') -> print "1"], [[_ != 'foobar'] -> print "2" ]]

Graphically (Visual programming wise), represented as:


Both versions will print (each in its own thread, and not necessarily in that order): 1 and 2.

5.2. Using Iterable Object as for Statement

There’s no for keyword, instead, every Iterable object is treated as a for-loop. For example:

[1,2,3] -> print


(1,2,3) -> print

Both, Graphically (Visual programming wise) represented as:


Will print 1, 2, and 3 (not necessarily in that order). The same applies to generator functions (i.e. yield) and Python classes that implement __iter__() method.

The only exception are strings. Pythonect does not iterate Python strings by default. To iterate a string in Pythonect, use Python’s built-in iter() function as follows:

iter("abc") -> print

The code above will print the letters: a, b, and c (not necessarily in that order).

5.3. Using Dictionary as switch Statement

There’s no switch keyword in Pythonect, instead, every literal dict can be used as a switch-like mechanism (without fallthrough). For example:

1 -> {1: 'One', 2: 'Two'} -> print

Will print One. While:

3 -> {1: 'One', 2: 'Two'} -> print

Will will not print and return False

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