Modular•6mo ago

How to iterate through an array/list?

Hello, I'm coming from Java to Mojo. It seems there is no support for iterating with "for" through a list - at least in the present version of Mojo. Here's the code:

def createFreeformExtrusion(lines:((Int,Int),(Int,Int),Optional[(Int,Int)])[], height)->String: # currently without curves.
    code=""
    for line in lines:
        if line[2]:

def createFreeformExtrusion(lines:((Int,Int),(Int,Int),Optional[(Int,Int)])[], height)->String: # currently without curves.
    code=""
    for line in lines:
        if line[2]:

Should work, doesn't it? It does work in Python. Thanks.

5 Replies

Serg Gini•6mo ago

lines looks like Tuple, not like List. Why not List((Int, Int),...) ?

MRiabovOP•6mo ago

Throws an error.

MRiabovOP•6mo ago

it's strange to me as well

Ryulord•6mo ago

Tuples are still a little rough around the edges last time I checked. You also can't use a list here unless you also use a variant since lists must be of a single type. I'd probably just make a simple struct since the type is quite large and unwieldy looking.

@value
struct Point:
    var x: Int
    var y: Int

@value
struct Lines:
    var a: Point
    var b: Point
    var c: Optional[Point]
    var d: Bool
    var e: Bool

fn create_freeform_extrusion(lines: Lines, height: Float32) -> String:

@value
struct Point:
    var x: Int
    var y: Int

@value
struct Lines:
    var a: Point
    var b: Point
    var c: Optional[Point]
    var d: Bool
    var e: Bool

fn create_freeform_extrusion(lines: Lines, height: Float32) -> String:

ModularBot•6mo ago

Congrats @Ryulord, you just advanced to level 6!

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How to iterate through an array/list?