VarTruncate
Truncates a linear container variable.
Syntax

VarTruncate(X, n)

X
is a variable that is a linear container 
n
is a nonnegative integer

If X
is an lvalue and a container and n
a nonnegative integer, then VarTruncate(X, n)
truncates X
to length n
. This means that if #X > n
initially, trailing elements are removed from X
until it has reached length n
. If initially #X ≤ n
, X
is left unchanged. If successful, VarTruncate
returns success
.
This is the procedural version of truncate
.
Examples
v ≔ SequenceVector(10)
(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
VarTruncate(v, 5)
success
v
⎛1⎞ ⎜2⎟ e⎜3⎟ ⎜4⎟ ⎝5⎠