Re^2: Deleting Elements from an Array without their Index Number?

I like how writing these as map+ternary makes it obvious that grep is just a specialization of map.

my @not_coin = map { $_ eq 'coin' ? () : $_} @array;
# Or do you want to replace coin by undef?
my @not_coin = map { $_ eq 'coin' ? undef : $_} @array;
[download]

⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊

Comment on Re^2: Deleting Elements from an Array without their Index Number? Download Code

Replies are listed 'Best First'.
Re^3: Deleting Elements from an Array without their Index Number? by Anonymous Monk on Jul 24, 2006 at 15:18 UTC
And map is a specialization of foreach+push. `my @not_coin; foreach (@array) { push(@array, $_ eq 'coin' ? () : $_); }` [download] How does this help?	[reply] [d/l]
Re^4: Deleting Elements from an Array without their Index Number? by diotalevi (Canon) on Jul 24, 2006 at 15:45 UTC
How does this help? It's always good to know the more general form of your specializations. Knowing that grep is map+flat list, you can turn chained grep/map into single expressions to avoid traversing your entire list multiple times, once for each step in the chain. ⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊	[reply]