Is there a special reason in Java for using always “extends” rather than “implements” for defining bounds of type parameters? For example: public interface C {} public class A<B...
This question already has answers here: Use ‘import module’ or ‘from module import’? (21 answers) Closed 7 years ago. I’m wondering if there’s any difference between the code fragment...
Is there any significant difference between the two python keywords continue and pass like in the examples for element in some_list: if not element: pass and for element in...
This question already has answers here: Equivalent of “continue” in Ruby (7 answers) Closed 5 years ago. In Ruby, how do I skip a loop in a .each loop,...
Maybe I am not from this planet, but it would seem to me that the following should be a syntax error: int a = {1,2,}; //extra comma in the...
I am using eclipse on my project and while messing around with my eclipse settings, I turned on Javascript support. Now eclipse complains that JQuery library has errors in...
I found this piece of code in /etc/cron.daily/apf #!/bin/bash /etc/apf/apf -f >> /dev/null 2>&1 /etc/apf/apf -s >> /dev/null 2>&1 It’s flushing and reloading the firewall. I don’t understand the...
I’m beginning to understand how the forall keyword is used in so-called “existential types” like this: data ShowBox = forall s. Show s => SB s This is only...
The best way I can describe what I’m looking for is to show you the failed code I’ve tried thus far: case car when ['honda', 'acura'].include?(car) # code when...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
What is the formal difference between passing arguments to functions in parentheses () and in braces {}? The feeling I got from the Programming in Scala book is that...