How to insert a line break
in markdown
Try adding 2 spaces (or a backslash \) after the first line: Visually: Output:
How to insert a line break
Java – What does “\n” mean?
Its is a new line
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
long and long int are identical. So are long long and long long int. In both cases, the int is optional. As to the difference between the two sets, the C++ standard mandates minimum ranges for each, and that long long is at least as wide as long. The controlling parts of the standard (C++11, … Read more
How to replace � in a string
That’s the Unicode Replacement Character, \uFFFD. (info) Something like this should work:
c++ “Incomplete type not allowed” error accessing class reference information (Circular dependency with forward declaration)
If you will place your definitions in this order then the code will be compiled The definition of function doSomething requires the complete definition of class Ball because it access its data member. In your code example module Player.cpp has no access to the definition of class Ball so the compiler issues an error.
What is this JavaScript “require”?
So what is this “require?” require() is not part of the standard JavaScript API. But in Node.js, it’s a built-in function with a special purpose: to load modules. Modules are a way to split an application into separate files instead of having all of your application in one file. This concept is also present in other languages … Read more
No connection could be made because the target machine actively refused it?
If this happens always, it literally means that the machine exists but that it has no services listening on the specified port, or there is a firewall stopping you. If it happens occasionally – you used the word “sometimes” – and retrying succeeds, it is likely because the server has a full ‘backlog’. When you … Read more
How to set environment variables in Python?
Environment variables must be strings, so use to set the variable DEBUSSY to the string 1. To access this variable later, simply use: Child processes automatically inherit the environment variables of the parent process — no special action on your part is required.
How to set time delay in javascript
Use setTimeout():
gcc makefile error: “No rule to make target …”
That’s usually because you don’t have a file called vertex.cpp available to make. Check that: that file exists. you’re in the right directory when you make. Other than that, I’ve not much else to suggest. Perhaps you could give us a directory listing of that directory.