jolly | Production ready boilerplate for hapi.js | Runtime Evironment library

To keep order you have to use list instead of set() and you have to sort every list separatelly.

But you have to remeber that dictionary doesn't have to keep order - in newest Python it tries to keep order but in older Puthon it doesn't have to but it has collections.OrderedDict() for this.

Move Item outside the component and memo-ize it:

As far as I know for best practices you should never dereference a pointer without initializing it

That's not just a "best practice", but it's absolutely mandatory to not do so. You must never indirect through an uninitiliased pointer.

How the new operator is automatically called when calling the function ?

new operator isn't called.

Ok, so we can do this with data relations:

• add a new file of type DataSet to your project (or if you have one already, do it in existing one). Open the dataset file to see a blank design surface (or with existing tables)
• right click new data table, put a table called Products, with columns of ProductId, ItemName and Price, with sensible datatypes (int, string, float)
• put a new table called, i don't know, Quotes or something
• in Quotes put columns of CustomerName, ProductId
• click in the grey row header of ProductId in Products table so line goes blue, then click drag and drop on ProductId of quotes table - the create data relation window appears, check that Products is the parent table and Quotes is the child table (I always forget which way to drag) - swap in the combo at the top or redo the drag the other way if it's wrong
• into Quotes table add another column ProductPrice, type float and set its Expression property to Parent.Price
• switch to a new form designer (for now, just to demo it) and open data sources window (View menu.. Other Windows). Hopefully you're not using net core.. Drag the products and quotes nodes out of data sources and into the form (there are two quotes nodes, one a child of products. Drag the top level ones because you don't need related binding behavior for this demo

Run the app, put some products in, then put a quote in, then change the price. It should update automatically The quote

You have a lot of ways to do that, but since you are still learning and you got a nice shot of code, I will introduce useMemo for you:

you can add useMemo to memorize and process data, then get the result direct...

look at this example:

global variables are passed to child processes.

Can you check out this example : https://stackblitz.com/edit/angular-2ltyru

This is pretty much same. Can include in ionic as well.

The main issue is that you shouldn't be using Menu for this. Menu assumes that it has MenuItem children and has accessibility functionality geared towards that assumption. The behavior you are seeing is caused by the functionality that tries to navigate to menu items by typing the character that the menu item's text starts with. In your case, it is finding the text of the label "Search", and then it is moving focus to that "menu item" (which is why you then get a focus outline on the div containing your TextField). If you change the label to "Type Here", you'll find the "s" works, but "t" doesn't.

My recommendation would be to use Popover directly (the lower-level component which Menu delegates to for the main functionality you are using from it). Another option would be to use the Autocomplete component since you seem to be trying to use Menu and the pop-up TextField to do your own custom version of what the Autocomplete component provides.