I am trying to zero out an array element and check its status so it won't be used again, however, it seems doesn't work. int main(int argc, char const *argv[]){ char pid[10][20] = {"abc", ...

I have a dictionary, which may only have these keys. But there can be 2 keys, for example 'news' and 'coupon' or only 'coupon'. How to check if the dictionary is empty? (The dictionaries below are em...

I a have jsp form page which get parameters an I need to check if one of them != null ,I have tried to write the condition but its not working: It went to the if block and not to the else block any wa...

I have been using jq for quite a while, but some behaviour today has surprised me: I expected this: echo '{"Name":"NAME","Tags":[{"Key":"KEY","V...