for

for .. in .. , keyword

The for X in T.X offers a simple iteration mechanism over the values of a specified vector. Unlike each blocks, there is no diagram, no observation table, etc.

This mechanism allows to cross a table with itself, as illustrated by:

table T = extend.range(5)

T.S = for N in T.N
  return N * sum(T.N) when (N < T.N)

show table "" a1b5 with T.N, T.S

Several tables can be used as long as the common table exists and is unique:

table T = extend.range(5)
table U[u] = by T.N mod 2

T.S = for tn in T.N, un in u
  return un + tn * sum(T.N) when (tn < T.N)

show table "" a1b5 with T.N, T.S