Re^4: Simplifying repeated parameter lists

[Voronich]

in reply to Re^3: Simplifying repeated parameter lists
in thread Simplifying repeated parameter lists

Great node link, thanks o/

And no, I sorta came up with diddly squat, hunting around for 'lambdas' as I was.

[Anonymous Monk]

That could have worked :)

lambdas , lambda

The first lambda language to go mainstream ?

a new keyword "lambda language"

https://en.wikipedia.org/wiki/Lambda_language

https://en.wikipedia.org/wiki/Lambda_language#Lambda_calculus_and_programming_languages

https://en.wikipedia.org/wiki/Lambda_language#Anonymous_functions

https://en.wikipedia.org/wiki/Anonymous_function

https://en.wikipedia.org/wiki/Anonymous_function#Closures

https://en.wikipedia.org/wiki/Anonymous_function#Currying

https://en.wikipedia.org/wiki/Anonymous_function#Perl

Perl 5 supports anonymous functions, as follows:

(sub { print "I got called\n" })->();         # 1. fully anonymous, ca
+lled as created
 
my $squarer = sub { my $x = shift; $x * $x }; # 2. assigned to a varia
+ble
 
sub curry {
    my ($sub, @args) = @_;
    return sub { $sub->(@args, @_) };         # 3. as a return value o
+f another function
}
 
# example of currying in Perl
sub sum { my $tot = 0; $tot += $_ for @_; $tot } # returns the sum of 
+its arguments
my $curried = curry \&sum, 5, 7, 9;
print $curried->(1,2,3), "\n";    # prints 27 ( = 5 + 7 + 9 + 1 + 2 + 
+3 )