Expected initializer before function name
You are missing a semicolon at the end of your ‘struct’ definition. Also, needs to be
Why would a “java.net.ConnectException: Connection timed out” exception occur when URL is up?
I’m getting a ConnectException: Connection timed out with some frequency from my code. The URL I am trying to hit is up. The same code works for some users, but not others. It seems like once one user starts to get this exception they continue to get the exception. Here is the stack trace: Here is a … Read more
socket.error: [Errno 48] Address already in use
You already have a process bound to the default port (8000). If you already ran the same module before, it is most likely that process still bound to the port. Try and locate the other process first: The command arguments are included, so you can spot the one running SimpleHTTPServer if more than one python process is active. You … Read more
Global variables in Java
To define Global Variable you can make use of static Keyword now you can access a and b from anywhere by calling
ERROR 1698 (28000): Access denied for user ‘root’@’localhost’
Some systems like Ubuntu, MySQL is using the UNIX auth_socket plugin by default. Basically it means that: db_users using it, will be “authenticated” by the system user credentials. You can see if your root user is set up like this by doing the following: As you can see in the query, the root user is using the auth_socket plugin. There are two ways to solve this: … Read more
Get the full URL in PHP
Have a look at $_SERVER[‘REQUEST_URI’], i.e. (Note that the double quoted string syntax is perfectly correct) If you want to support both HTTP and HTTPS, you can use Editor’s note: using this code has security implications. The client can set HTTP_HOST and REQUEST_URI to any arbitrary value it wants.
How to make JavaScript execute after page load?
These solutions will work: or or even Note that the last option is a better way to go since it is unobstrusive and is considered more standard.
plot.new has not been called yet
Why does this happen? Error in plot.xy(xy.coords(x, y), type = type, …) : plot.new has not been called yet
u’\ufeff’ in Python string
The Unicode character U+FEFF is the byte order mark, or BOM, and is used to tell the difference between big- and little-endian UTF-16 encoding. If you decode the web page using the right codec, Python will remove it for you. Examples: Note that EF BB BF is a UTF-8-encoded BOM. It is not required for UTF-8, but serves only … Read more
How to import cv2 in python3?
I’m using Windows, and I’m trying to install package cv2 for python3. I did a pip3 install opencv-python and it reports successful: But when I do the import cv2 from python3, it’s not found and I get weird errors: What am I doing wrong?