to-int converts the given value to an integer number. The function always uses
humane coalescing.
(to-int "0")➜0(to-int 1.0)➜1(to-int 1.2)➜ error, no lossless conversion possible(to-int [])➜ error
valueis an arbitrary expression.
to-int evaluates the given expression and then coalesces the result into an
integer value. See the documentation for the humane coalescer for the exact
conversion rules.