Sum Distances To Origin With Pattern Matching Compared To Java Assignment

Background

Pythagorean theorem

The distance of a point (x,y) from the origin:

$distance={\sqrt {x^{2}+y^{2}}}$

SML

Math.sqrt(x)

Java

Math.sqrt(x)

Code To Implement

Java

Note: you will need to complete the ImList<E> exercise before testing the Java portion of this assignment.

class:	SumDistancesToOrigin.java
methods:	sumDistancesToOrigin
package:	distance.warmup
source folder:	src/main/java

Math.sqrt(v)

public static double sumDistancesToOrigin(ImList<ImTuple2<Double, Double>> xys)

SML

Fall 2022 Note: if attempted without pattern matching, you may receive an unresolved flex record error:

../../../main/sml/warmup_sum_distances_to_origin/sum_distances_to_origin.sml:4.2-21.56 Error: unresolved flex record (need to know the names of ALL the fields
in this context)
 type: {1:real, 2:real; 'Z}

this can be solved by using pattern matching or specifying the type of the parameter xys:

fun sum_distances_to_origin(xys : (real * real) list)

file:	src/main/sml/warmup_sum_distances_to_origin/sum_distances_to_origin.sml
functions:	sum_distances_to_origin

Math.sqrt(v)

fun sum_distances_to_origin(xys : (real * real) list)

Test

Java

class:	SumDistancesToOriginTestSuite.java
package:	distance.warmup
source folder:	src/test/java

SML

source folder:	src/test/sml/warmup_sum_distances_to_origin
how to run with CM.make verbosity off:	sml -Ccm.verbose=false run_sum_distances_to_origin_testing.sml
how to run with CM.make verbosity on:	sml run_sum_distances_to_origin_testing.sml

note: ensure that you have removed all printing to receive credit for any assignment.

SML Error Messages