#lang sicp

(define (>= t v) (or (t > v) (t = v)))
(define (sum-squared-pair a b)
	(+ (* a a) (* b b))
)
(define (sum-squared-largest-pair x y z)
	(cond 
		((and (>= x y) (>= y z)) (sum-squared-pair x y))
		((and (>= x y) (>= z y)) (sum-squared-pair x z))
		((< x z) (sum-squared-pair y z))
	)
)

(sum-squared-largest-pair 4 5 3)

I'm using Racket's SICP collection, and the interpreter tells me:

application: not a procedure;
 expected a procedure that can be applied to arguments
  given: 5
  context...:
   /home/splop/code/sicp/1-3.rkt:7:0: sum-squared-largest-pair
   body of "/home/splop/code/sicp/1-3.rkt"

In reply to @moltylollipop:matrix.org
I don't understand why that is not a procedure

In reply to @drown_notably:matrix.org
(t > v) (t = v) You forgot it is function/procedure first here :)

In reply to @leibniz:matrix.org
Yes, the webapp should be able to get coordinates of the device via GPS or directly upload photos from camera (so permissions) @tho1efx:matrix.org

The map is going to be an external dependency any way you go. I've had good luck with http://leafletjs.com/.

GPS location will be a navigator.geolocation.getCurrentPosition(some_callback) call.

Photo upload would be handled like so: https://stackoverflow.com/questions/17241707/using-form-input-to-access-camera-and-immediately-upload-photos-using-web-app

You should be able to do all of this in any of the web frameworks fairly easily. Backend design should be simple enough to not matter what you pick.

Auth is probably the part that would differentiate. Look for how each framework handles that (or doesn't)? https://awesome-cl.com/#web-frameworks has a list for Common Lisp.