for in loop with key value pairs

Question

I was trying for in loop to traverse through key value pairs :

a = {1, 2, 7, val4="val 4", val5="val 5", 9, "ten"}

print (a['val4'])
print (a[2])

print ("--- for in loop ---")
for k ,v in ipairs(a) do
  print (k,v)
end

output:

val 4
2
--- for in loop ---
1   1
2   2
3   7
4   9
5   ten

Can someone tell me why val4 and val5 was not retrived, what can I do to get them

hers the test in rpl.it: http://repl.it/Wzw/2

Yu Hao · Accepted Answer · 2014-08-17 08:39:26Z

3

ipairs is used for sequences, it only iterates through integer keys from 1, 2, etc. But your table has non-integer keys like "val4" and "val5". Use pairs instead:

for k ,v in pairs(a) do
  print (k,v)
end

answered Aug 17, 2014 at 8:39

Yu Hao

123k50 gold badges253 silver badges305 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

A.Zaben Over a year ago

That was ture, thakns

Collectives™ on Stack Overflow

for in loop with key value pairs

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related