zilcuanu questions

• Unable to install yeoman generators
• jpa query with optional parameters
• condensing the array object recursively in javascript
• Replacing X-Frame-Options with CSP
• Unable to install docker on AWS Linux AMI
• difference between app.js and index.js in Node.js
• javascript constructor with optional parameters
• using memoize function with underscore.js
• Redirecting to error page in Angularjs
• java8 functional interface to handle the callback

zilcuanu answers