How does Java’s PriorityQueue differ from a min-heap?

Add() works like an insertWithPriority. You can define priority for the type that you want using the constructor: look under https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/PriorityQueue.html The order the Comparator gives will represent the priority in the queue.

‘git’ is not recognized as an internal or external command

Have you correctly set your PATH to point at your Git installation? You need to add the following paths to PATH: C:\Program Files\Git\bin\ C:\Program Files\Git\cmd\ And check that these paths are correct – you may have Git installed on a different drive, or under Program Files (x86). Correct the paths if necessary. Modifying PATH on … Read more

Why are there two ways to unstage a file in Git?

git rm –cached <filePath> does not unstage a file, it actually stages the removal of the file(s) from the repo (assuming it was already committed before) but leaves the file in your working tree (leaving you with an untracked file). git reset — <filePath> will unstage any staged changes for the given file(s). That said, … Read more

PermissionError: [Errno 13] in Python

When doing; …you’re trying to open a directory as a file, which may (and on most non UNIX file systems will) fail. Your other example though; should work well if you just have the permission on a.txt. You may want to use a raw (r-prefixed) string though, to make sure your path does not contain … Read more

Handling file renames in Git

For git mv the manual page says The index is updated after successful completion, […] So, at first, you have to update the index on your own (by using git add mobile.css). However git status will still show two different files: You can get a different output by running git commit –dry-run -a, which results … Read more

Casting variables in Java

Casting in Java isn’t magic, it’s you telling the compiler that an Object of type A is actually of more specific type B, and thus gaining access to all the methods on B that you wouldn’t have had otherwise. You’re not performing any kind of magic or conversion when performing casting, you’re essentially telling the … Read more

How do I make a delay in Java?

If you want to pause then use java.util.concurrent.TimeUnit: To sleep for one second or To sleep for a minute. As this is a loop, this presents an inherent problem – drift. Every time you run code and then sleep you will be drifting a little bit from running, say, every second. If this is an issue … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)