Single line if statement with a continue

Thu Dec 15 16:34:54 EST 2022

On 2022年12月15日, MRAB <python at mrabarnett.plus.com> wrote:
> A problem with having a single return is that it can lead to excessive 
> indentation:
>> if test_1:
> ...
>> if test_2:
> ...
>> if test_3:
> ...
>> return

I sometimes have to work on code like that with bocks nested 8-10
levels deep spread out over hundreds of lines. The first thing I do is
convert it to something like the code below. Check for error
conditions up front and exit accordingly.
When working in C, a "goto error" or "goto done" instead of "return"
can provide a "single return" if that's deemed important.
>> With multiple returns, however:
>> if not test_1:
> return
>> ...
>> if not test_2:
> return
>> ...
>> if not test_3:
> return
>> ...
>> return