How to print elements in a vector c++

Your function declaration and definition are not consistent, you want to generate vector from Initialize, you can do: To print vector: Now you call: Don’t forget to change function definition of Initialize, Print to match the new signature I provided above. Also you are redefining a local variable v which shadows function parameter, you just … Read more

NOT IN vs NOT EXISTS

I always default to NOT EXISTS. The execution plans may be the same at the moment but if either column is altered in the future to allow NULLs the NOT IN version will need to do more work (even if no NULLs are actually present in the data) and the semantics of NOT IN if NULLs are present are unlikely to be the ones you … Read more

SQL SELECT WHERE field contains words

Rather slow, but working method to include any of words: If you need all words to be present, use this: If you want something faster, you need to look into full text search, and this is very specific for each database type.

jQuery $(this) keyword

When you perform an DOM query through jQuery like $(‘class-name’) it actively searched the DOM for that element and returns that element with all the jQuery prototype methods attached. When you’re within the jQuery chain or event you don’t have to rerun the DOM query you can use the context $(this). Like so: $(this) will … Read more

What does ERR_SPDY_PROTOCOL_ERROR mean in nginx?

I came across this question when trying to find help for the problem I was facing with ERR_SPDY_PROTOCOL_ERROR on Chrome. Thought this might benefit others. Our situation / solution: We use an AWS Application Load Balancer connected to EC2 instances. One of the scripts we run on EC2 proxies requests from the client browser. We recently updated the script – no … Read more

Python: finding an element in a list [duplicate]

The best way is probably to use the list method .index. For the objects in the list, you can do something like: with any special processing you need. You can also use a for/in statement with enumerate(arr) Example of finding the index of an item that has value > 100. Source