(Redirected from () Contains () (Operators block))

This article is about the operators block. For the lists block, see () Contains ()? (List block).
() Contains ()?
() contains ()?
Category Operators
Type Boolean
Introduced in 3.0

The () Contains ()? block is an Operators block and a Boolean block. The block checks if the first parameter's text contains the second parameter's text—if it does, the block reports true; otherwise, it reports false, and this is case-insensitive.

Example Use

Checking whether input contains a certain string - useful for soft-checking as the actual input may not be exactly identical:

when gf clicked
switch costume to [bunny v]
ask [What's this animal?] and wait
if <(answer) contains [bunny]?> then // the contains block is used instead of equal to because the user might say "it's a bunny"
  say [Correct!]
else
  say [Nope!]
end

Workaround

Main article: List of Block Workarounds
define (string1) contains (string2)::custom
set [i v] to [0]
set [j v] to [1]
repeat (length of (string1))
  change [i v] by (1)
  if <(letter (i) of (string1)) = (letter (j) of (string2))> then
    set [j v] to [1]
    repeat until <<not <(letter ((i) + (j)) of (string1)) = (letter (j) of (string2))>> or <(j) > (length of (string2))>>
      change [j v] by (1)
    end
    if <(j) > (length of (string2))> then
      set [result v] to [true]
      stop [this script v]
    end
  end
end

References