Is there an equivalent to the “for … else” Python loop in C++?

Question

Python has an interesting for statement which lets you specify an else clause.

In a construct like this one:

for i in foo:
  if         


        

Answer 1

I am not aware of an elegant way to accomplish this in C/C++ (not involving a flag variable). The suggested other options are much more horrible than that...

To answer @Kerrek SB about real life usages, I found a few in my code (simplified snippets)

Example 1: typical find/fail

for item in elements:
    if condition(item):
        do_stuff(item)
        break
else: #for else
    raise Exception("No valid item in elements")

Example 2: limited number of attempts

for retrynum in range(max_retries):
    try:
        attempt_operation()
    except SomeException:
        continue
    else:
        break
else: #for else
    raise Exception("Operation failed {} times".format(max_retries))