Send value of a variable from drupal8 settings to an iframe in the same page

I have a variable in drupal settings which gets its value from php. (function ($, Drupal, drupalSettings) { /** * @namespace */ Drupal.behaviors.pdf_appAccessData = { attach: function (context) { var value = drupalSettings.value_set; } }; })(jQuery, Drupal, drupalSettings); How can I set this value to be available in the iframe of the page? I tried…

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Why do I get an Error: EPERM when using create-react-app with npx?

I’m trying to start to use “create-react-app” on my windows machine, but I’m not able to make it work. I’m using the npx create-react-app appname command on the following system Windows: 10 Nodejs: 13.6.0 npm/npx: 6.13.6 Previously I had “create-react-app” globally installed (already un-installed globally are suggest). Also, I already have un-installed nodejs and re-installed…

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Can a non-const function be called using a non-const pointer and how the program will behave when to unique_ptrs point to the same objec?

The first question: Now I have two unique_ptrs (ptrToBase and ptrToDerived) pointing to the same object (made by make_unique). So is the program behavior undefined or how will he work on destroying the two pointers? The second one: the pointer ptrToDerived is non-constatn. how function1 can be called although it’s a constant function #include <iostream>…

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