I heard that the main difference between latch and flip flops is that latches are asynchronous while flip flops are edge triggered which makes sense. But when I check out their shematic they seem p...

Please help me to understand the difference between range operators ... and .. as "flip-flops" used in Ruby. This is an example from Pragmatic Programmers guide to Ruby: a = (11..20).collect {|i|...

The following code is using a flip-flop operator. (1..10).each {|x| print "#{x}," if x==3..x==5 } Why are the results 3,4,5? I think it should be 3,4. As mentioned in a tutorial, this expressi...

I think I understand how a flip-flop works thanks to a tutorial, but the example there is contrived just for teaching. Can anyone give an example of how you have actually used or would use a flip-f...

I have heard and read about flip-flops with regular expressions in Perl and Ruby recently, but I was unable to find how they really work and what the common use cases are. Can anyone explain this ...

Ruby (and Perl) has a concept of the flip flop: file = File.open("ordinal") while file.gets print if ($_ =~ /third/) .. ($_ =~ /fifth/) end which given a list of ordinals, such as first second...

I'm dismayed. OK, so this was probably the most fun Perl bug I've ever found. Even today I'm learning new stuff about Perl. Essentially, the flip-flop operator .. which returns false until the left...