|
disp(compose(f1{i}, f2{i})(.5))
endfor</lang>
=={{header|Oz}}==
To be executed in the REPL.
<lang oz>declare
fun {Compose F G}
fun {$ X}
{F {G X}}
end
end
fun {Cube X} X*X*X end
fun {CubeRoot X} {Number.pow X 1.0/3.0} end
in
for
F in [Float.sin Float.cos Cube]
I in [Float.asin Float.acos CubeRoot]
do
{Show {{Compose I F} 0.5}}
end
</lang>
=={{header|PARI/GP}}==
{{works with|PARI/GP|2.4.2 and above}}
<lang parigp>compose(f,g)={
x -> f(g(x))
};
fcf()={
my(A,B);
A=[x->sin(x), x->cos(x), x->x^2];
B=[x->asin(x), x->acos(x), x->sqrt(x)];
for(i=1,#A,
print(compose(A[i],B[i])(.5))
)
};</lang>
Usage note: In Pari/GP 2.4.3 the vectors can be written as
<lang parigp> A=[sin, cos, x->x^2];
B=[asin, acos, x->sqrt(x)];</lang>
=={{header|Perl}}==
<lang perl>use Math::Complex ':trig';
sub compose {
my ($f, $g) = @_;
sub {
$f -> ($g -> (@_));
};
}
my $cube = sub { $_[0] ** (3) };
my $croot = sub { $_[0] ** (1/3) };
my @flist1 = ( \&Math::Complex::sin, \&Math::Complex::cos, $cube );
my @flist2 = ( \&asin, \&acos, $croot );
print join "\n", map {
compose($flist1[$_], $flist2[$_]) -> (0.5)
} 0..2;</lang>
=={{header|Perl 6}}==
{{works with|Rakudo|2011.06}}
<lang perl6>sub compose (&g, &f) { return { g f $^x } }
my $x = *.sin;
my $xi = *.asin;
my $y = *.cos;
my $yi = *.acos;
my $z = * ** 3;
my $zi = * ** (1/3);
my @functions = $x, $y, $z;
my @inverses = $xi, $yi, $zi;
for @functions Z @inverses { say compose($^g, $^f)(.5) }</lang>
Output:
<pre>0.5
0.5
0.5</pre>
|