Can a Python function be an argument of another function? Yes. def myfunc(anotherfunc, extraArgs): anotherfunc(*extraArgs) To be more specific … with various arguments … >>> def x(a,b): … print “param 1 %s param 2 %s” % (a,b) … >>> def y(z,t): … z(*t) … >>> y(x, (“hello”,”manuel”)) param 1 hello param 2 manuel
It appears I cannot use an if statement. Arrow functions either allow to use an expression or a block as their body. Passing an expression foo => bar is equivalent to the following block foo => { return bar; } However, if (person.age > 18) person is not an expression, if is a statement. Hence … Read more
You can do the following using array_map: $new_arr = array_map(‘trim’, explode(‘,’, $str));
Few things to mention here, before giving the actual answer: Your question doesn’t have anything to do with left, it’s rather about the difference between reducing and folding The difference is not the implementation at all, just look at the signatures. The question doesn’t have anything to do with Scala in particular, it’s rather about … Read more
I agree with Dietrich Epp: it’s a combination of several things that make GHC fast. First and foremost, Haskell is very high-level. This enables the compiler to perform aggressive optimisations without breaking your code. Think about SQL. Now, when I write a SELECT statement, it might look like an imperative loop, but it isn’t. It … Read more
map isn’t particularly pythonic. I would recommend using list comprehensions instead: map(f, iterable) is basically equivalent to: [f(x) for x in iterable] map on its own can’t do a Cartesian product, because the length of its output list is always the same as its input list. You can trivially do a Cartesian product with a … Read more