September Morn Update

Task/Text-processing-2/Phix/text-processing-2.phix

@@ -0,0 +1,33 @@
+sequence lines = read_lines("demo\\rosetta\\readings.txt")
+
+include builtins\timedate.e
+
+integer all_good = 0
+
+string fmt = "%d-%d-%d\t"&join(repeat("%f",48),'\t')
+sequence extset = sq_mul(tagset(24),2)  -- {2,4,6,..48}
+
+--The extract routine has been added as a builtin for 0.8.0+. If you don't yet have it, just use this:
+--function extract(sequence source, indexes)
+--  for i=1 to length(indexes) do
+--      indexes[i] = source[indexes[i]]
+--  end for
+--  return indexes
+--end function
+
+for i=1 to length(lines) do
+    string li = lines[i]
+    sequence r = scanf(li,fmt), this, last
+    if length(r)!=1 then
+        printf(1,"bad line [%d]:%s\n",{i,li})
+    else
+        this = r[1][1..3]
+        if i>1 and this=last then
+            printf(1,"duplicate line for %04d/%02d/%02d\n",last)
+        end if
+        last = this
+        all_good += sum(sq_le(extract(r[1][4..$],extset),0))=0
+    end if
+end for
+
+printf(1,"Valid records %d of %d total\n",{all_good, length(lines)})