added support for variables and parameters as array. also improved conversion of variables and parameters into Expressionelement

package/test/CpuInterpreterTests.jl

@@ -45,10 +45,10 @@ end
 
 # LinearAlgebra.BLAS.set_num_threads(1) # only use a single thread for peakflops
 
-@test test_cpu_interpreter(1000)
-@test test_cpu_interpreter(1000, parallel=true) # start julia -t 6 for six threads
-@test test_cpu_interpreter(10000)
-@test test_cpu_interpreter(10000, parallel=true)
+# @test test_cpu_interpreter(1000)
+# @test test_cpu_interpreter(1000, parallel=true) # start julia -t 6 for six threads
+# @test test_cpu_interpreter(10000)
+# @test test_cpu_interpreter(10000, parallel=true)
 
 
 function test_cpu_interpreter_nikuradse() 
@@ -62,14 +62,25 @@ function test_cpu_interpreter_nikuradse()
     # data/esr_nvar2_len10.txt.gz_9.txt.gz has  ~250_000 exprs
     # data/esr_nvar2_len10.txt.gz_10.txt.gz has ~800_000 exrps
     GZip.open("data/esr_nvar2_len10.txt.gz_9.txt.gz") do io 
+		i = 0
         for line in eachline(io)
             expr, p = parse_infix(line, varnames, paramnames)
             
+			if i > 10
+				return
+			end
+			println(expr)
+
             push!(exprs, expr)
             push!(parameters, randn(Float32, length(p)))
+
+			i += 1
         end
     end
     
     
     interpret_cpu(exprs, X, parameters) # TODO: sufficient to do up to 10 repetitions per expression, 
-end
+end
+
+
+@test test_cpu_interpreter_nikuradse()