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AlgoRythm
7y

There are two things about arrays that sometimes confuse me:

[0]: They start at zero
[1]: They end at one less than the length

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  • 0
    7y
    I originally read two as three... And it sorta still made sense
  • 15
    7y
    Technically, second rule is not a rule is a direct consequences of the 1st rule. You know the rule number 0.
  • 2
    7y
    @thedev Yeah but it's appropriate because 1 (The index of the second item) is one less than the length of the list.
  • 2
    7y
    @AlgoRythm the index of the first item is already one less than the length. Because it starts at 0.
  • 1
    7y
    They end at one less than the length because they start at zero
  • 2
    7y
    Easy way to remember
    index = position
    length = number of elements
  • 0
    7y
    @bdonald yup.
  • 6
    7y
    Except Python arrays, whose last element is at -1. Oh I so envy them.
  • 0
    7y
    @redundandundant I do too now
  • 0
    7y
    You could use something like Lua. Granted, you then have the problem that you're using Lua, but you'll like the arrays!
  • 0
    7y
    The Element of Index 0 ends where 1 begins, so the length thing makes sense. If there is 1 element that starts @0 (ends @1) then then len is 1.
  • 0
    7y
    Why does it confuse you? If you know it starts at index 0 then the end must be length - 1.
  • 1
    7y
    @simeg It's mostly for the joke man, but sometimes it is a little confusing when applying it to data structures and not counting the normal way.
  • 1
    7y
    But they don't start at 0. They just index starting from zero. It can sometimes get confusing tho, whether you should add 1, subtract 1, just leave it, etc.
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