Do a while True inside your for loop, put your try code inside, and break from that while loop only when your code succeeds. for i in range(0,100): while True: try: # do stuff except SomeSpecificException: continue break
You want: foreach (int number in numbers) // <— go back to here ——–+ { // | if (number < 0) // | { // | continue; // Skip the remainder of this iteration. —–+ } // do work } Here’s more about the continue keyword. Update: In response to Brian’s follow-up question in the … Read more
This is excellent practice. By creating variables inside loops, you ensure their scope is restricted to inside the loop. It cannot be referenced nor called outside of the loop. This way: If the name of the variable is a bit “generic” (like “i”), there is no risk to mix it with another variable of same … Read more
This will iterate through all the elements: array = [1, 2, 3, 4, 5, 6] array.each { |x| puts x } # Output: 1 2 3 4 5 6 This will iterate through all the elements giving you the value and the index: array = [“A”, “B”, “C”] array.each_with_index {|val, index| puts “#{val} => #{index}” … Read more
for x in xrange(10): for y in xrange(10): print x*y if x*y > 50: break else: continue # only executed if the inner loop did NOT break break # only executed if the inner loop DID break The same works for deeper loops: for x in xrange(10): for y in xrange(10): for z in xrange(10): … Read more
https://play.golang.org/p/JGZ7mN0-U- for k, v := range m { fmt.Printf(“key[%s] value[%s]\n”, k, v) } or for k := range m { fmt.Printf(“key[%s] value[%s]\n”, k, m[k]) } Go language specs for for statements specifies that the first value is the key, the second variable is the value, but doesn’t have to be present.
If your range has a variable, use seq, like this: count=10 for i in $(seq $count); do command done Simply: for run in {1..10}; do command done Or as a one-liner, for those that want to copy and paste easily: for run in {1..10}; do command; done
In Python 3.x and 2.x you can use use list to force a copy of the keys to be made: for i in list(d): In Python 2.x calling keys made a copy of the keys that you could iterate over while modifying the dict: for i in d.keys(): But note that in Python 3.x this … Read more
The setTimeout() function is non-blocking and will return immediately. Therefore your loop will iterate very quickly and it will initiate 3-second timeout triggers one after the other in quick succession. That is why your first alerts pops up after 3 seconds, and all the rest follow in succession without any delay. You may want to … Read more
CAUTION: The begin <code> end while <condition> is rejected by Ruby’s author Matz. Instead he suggests using Kernel#loop, e.g. loop do # some code here break if <condition> end Here’s an email exchange in 23 Nov 2005 where Matz states: |> Don’t use it please. I’m regretting this feature, and I’d like to |> remove … Read more