Automated extraction of all elements out of a nested array into ONE new array

[Peter Stumpf]

Dear Harry

is there any possibilty to extract all elements of a nested array, let's say an array with 4 arrays of each a lenght of 3 elements, in an -in an automated way- into one other array?

ExArray={ {t1,t2,t3}, {t4,t5,t6}, {t7,t8,t9}, {t10,t11,t12} }

The trivial way of course is to this do this NewArray= { ExArray(1)+ExArray(2)+ExArray(3..}

But how can one do that with the "automated counting" of the function "map" or ...?

Thanx

Peter

[Harry King]

You almost gave the solution yourself.

Use the expression   'reduce(|x,accum|(accum + x), {}, this.ExArray)'

Note that in your example, ExArray should be defined as '{ {"t1","t2","t3"}, {"t4","t5","t6"}, {"t7","t8","t9"}, {"t10","t11","t12"} }'

Harry

[Peter Stumpf]

Dear Harry

Thank you very much!!

I thought that "reduce(|x,accum| ....)" would only work on "values", not on "arrays"!

Kind regards

Peter