Your suggestion would work, but using a Do loop might be a little more readable. This is actually an idiom in C – instead of using a goto, you can have a do { } while (0) loop with a break statement if you want to bail out of the construct early. Dim i For … Read more
The expression (sum(row) for row in M) creates what’s called a generator. This generator will evaluate the expression (sum(row)) once for each row in M. However, the generator doesn’t do anything yet, we’ve just set it up. The statement next(G) actually runs the generator on M. So, if you run next(G) once, you’ll get the … Read more
for uses iter(song) to loop; you can do this in your own code and then advance the iterator inside the loop; calling iter() on the iterable again will only return the same iterable object so you can advance the iterable inside the loop with for following right along in the next iteration. Advance the iterator … Read more
After thinking this through carefully, I think this is the best way. It lets you step off in the middle easily without using break, which I think is important, and it requires minimal computation, so I think it’s the fastest. It also doesn’t require that li be a list or tuple. It could be any … Read more
You can use a GoTo: Do ‘… do stuff your loop will be doing ‘ skip to the end of the loop if necessary: If <condition-to-go-to-next-iteration> Then GoTo ContinueLoop ‘… do other stuff if the condition is not met ContinueLoop: Loop
To read only the first row of the csv file use next() on the reader object. with open(‘some.csv’, newline=””) as f: reader = csv.reader(f) row1 = next(reader) # gets the first line # now do something here # if first row is the header, then you can do one more next() to get the next … Read more
In this case you need to go up to the <tr> then use .next(), like this: $(obj).closest(‘tr’).next().find(‘.class’); Or if there may be rows in-between without the .class inside, you can use .nextAll(), like this: $(obj).closest(‘tr’).nextAll(‘:has(.class):first’).find(‘.class’);
This appears to be a variable naming convention in Node.js control-flow code, where a reference to the next function to execute is given to a callback for it to kick-off when it’s done. See, for example, the code samples here: http://blog.mixu.net/2011/02/02/essential-node-js-patterns-and-snippets/ Let’s look at the example you posted: function loadUser(req, res, next) { if (req.session.user_id) … Read more
This is what the res.locals object is for. Setting variables directly on the request object is not supported or documented. res.locals is guaranteed to hold state over the life of a request. res.locals (Note: the documentation quoted here is now outdated, check the link for the most recent version.) An object that contains response local … Read more