Why vectors to lists cast would be useful

gistfile1.txt

{	notes: " Lists to vectors as below. Vectors to lists would be more efficient as could then sum up over subranges i.e. rows and columns"
	name: MAS1342 20122013 CBA1a_1
	extensions:[stats]
	percentPass: 50
	shuffleQuestions: false
	rulesets:{
			std:[all,fractionNumbers, !collectNumbers,!noLeadingMinus]
			}
			
	navigation: {
		allowregen: true
		showfrontpage: false
		reverse: true
		browse: true
	}

	feedback: {
		showtotalmark: true
	}
	functions:{
	ft:{
	parameters:[[v,vector],[m,number],[n,number],[j,number],[k,number]]
	type:string
	definition:"""switch(j=0 and k=0, '<table border = "1"><tr><td>$\var{v[j*n+k]}$</td>'+ft(v,m,n,j,k+1),
					 j=m-1 and k=n-1, '<td>$\var{v[j*n+k]}$</td></tr></table>',
								 k=0, '<tr><td>$\var{v[j*n+k]}$</td>'+ft(v,m,n,j,k+1),
							   k=n-1, '<td>$\var{v[j*n+k]}$</td></tr> \n'+ft(v,m,n,j+1,0),
									  '<td>$\var{v[j*n+k]}$</td>'+ft(v,m,n,j,k+1))
							   
			"""			
	}
	}

	questions: [
				{
			name: MAS1342 20122013 CBA1a_1

			variables: {
			
			a: "sort(repeat(random(0.005..0.995#0.001),m*n-1))"
			a1:"a+1"
			a0:"[0]+a"
			b:"vector(a1)-vector(a0)"
			m:random(3..10)
			n:random(3..10)

			}
			
			
			statement: """
			{ft(b,m,n,0,0)}
			"""
		

			parts: [
				
				
			]

			advice: """
			
			
			"""
			
			
		}

	]
			
			
}