= LBOUND( array [, dimension])
The LBOUND
command (short for “lower bound”) is used to determine the
lowest index of an array. In other words, it tells you where the count
of elements in an array begins.
Imagine an array as a cabinet with many numbered drawers. LBOUND
tells you
what the number of the first drawer is. This is useful when you need to
iterate through all the elements of an array, because it gives you the
starting point of the loop.
If you have an array with multiple dimensions, you can specify the dimension for which you want to find the lower bound:
LBOUND
is essential when you write FOR
loops to iterate through all
the elements of an array. It allows you to set the initial value of the loop
counter correctly.
DIM a(10,20) PRINT LBOUND(a) : REM it will print 0
Lb
If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please open an issue for this keyword on GitHub. Thank you!