sigsegvTime for a cleanup!
To be zen: what does it mean to master something anyway? 5 years ago
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But I’m not one to piegon hole people or programming languages.
A couple of weeks back I mentioned this book that I wanted to get:
Higher-Order Perl: Transforming Programs with Programs (Mark Jason Dominus)
A friend got their copy first and kindly loaned it to me (mine arrives Friday). The first 3 chapters covering recursion, dispatch tables and memoization respectively are kind of alright. Not particularly interesting to me because I’ve used these techniques in the part.
Chapter 4 is where it starts to get interesting for me.
This simple example has made me think about Perl a little differently:
sub upto {
my ($m, $n) = @_;return sub {
$m <= $n ? $m++ : undef;
};}
I’m a quarter of the way through chapter 4. MJD’s solution to permutation makes the normal interviewing solution to that question seem ugly in comparison [Here’s a hint: it uses iterators! Read the book for the solution] 6 years ago