AlexK questions

• PromiseKit wrapping external closure in Promises
• DateTimeFormatter Accept Multiple Types and Convert to One
• Maven Unable to load AWS credentials from any provider in the chain
• Traversing 2d array row first and then column first
• Making sense of Firestore Security Rules - only allowing update for certain fields
• Move file to a different s3Location in Java
• Trying to make simple PDF document with Apache poi
• Flutter Web ShowMenu Does Not Move With Screen Resize
• The request sent by the client was syntactically incorrect Java ZonedDateTime backend
• DateTimeFormatter Accepting Multiple Dates and Converting to One (java.time library)

AlexK answers