Because Mythryl compiles optimized native code, and because it has an extraordinarily expressive syntax, facilities which must be hardwired in other languages can be — and are — simple library functions in Mythryl.
This means that when you need them to do something different for a given project, you can easily write a replacement, and when you need something entirely new under the sun, you can easily implement that also.
Example: In languages ranging from APL to Perl, the operator generating a list or vector of sequential integers is hardwired into the compiler parser and code generator. The Mythryl version is the double-dot operator:
linux$ my
eval: 0..9
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
And here is its implementation:
# Given 1 .. 10,
# return [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
#
fun i .. j
=
make_arithmetic_sequence (i, j, [])
where
fun make_arithmetic_sequence (i, j, result_so_far)
=
i > j ?? result_so_far
:: make_arithmetic_sequence (i, j - 1, j ! result_so_far);
end;
Example: Mythryl supports programmer-defined infix, prefix, postfix and circumfix operators. This allows more natural notation for a variety of programming constructs. For example absolute value may be written |x|. Here is a definition of factorial taken directly from the Mythryl standard library:
fun 0! => 1;
n! => n * (n - 1)! ;
end;