How to generate a random int in C?
Note: Don’t use rand() for security. If you need a cryptographically secure number, see this answer instead.
How do I decompile a .dll file?
The answer depends on what language the DLL was written in. If it was a .NET language then, as pointed out, you can use .NET Reflector. If it’s the older Visual Basic (pre-.NET), then the DLL is compiled as what’s called p-code and there are a few options for doing some variations on decompiling. Finally, if … Read more
I am getting an “Invalid Host header” message when connecting to webpack-dev-server remotely
I found out, that I need to set the public property of devServer, to my request’s host value. Being that it will be displayed at that external address. So I needed this in my webpack.config.js Another solution is using it on the CLI:
Having trouble setting working directory
The command setwd(“~/”) should set your working directory to your home directory. You might be experiencing problems because the OS you are using does not recognise “~/” as your home directory: this might be because of the OS, or it might be because of not having set that as your home directory elsewhere. As you have tagged the post … Read more
Create Git branch with current changes
If you hadn’t made any commit yet, only (1: branch) and (3: checkout) would be enough.Or, in one command: git checkout -b newBranch With Git 2.23+ (Q3 2019), the new command git switch would create the branch in one line (with the same kind of reset –hard, so beware of its effect): As mentioned in the git reset man page: You have made some … Read more
Bad File Descriptor with Linux Socket write() Bad File Descriptor C
In general, when “Bad File Descriptor” is encountered, it means that the socket file descriptor you passed into the API is not valid, which has multiple possible reasons: The fd is already closed somewhere. The fd has a wrong value, which is inconsistent with the value obtained from socket() api
How can I prevent java.lang.NumberFormatException: For input string: “N/A”?
“N/A” is not an integer. It must throw NumberFormatException if you try to parse it to an integer. Check before parsing or handle Exception properly. Exception Handlingtry{ int i = Integer.parseInt(input); } catch(NumberFormatException ex){ // handle your exception … } or – Integer pattern matching –
“Expected expression before ‘ { ‘ token”
Best to do the init’ing at declaration time: Only the arrays need to be done that way, but it’s best to do them all the same way. Your alternative is
So what does “return 0” actually mean?
Is it like php, where it returns its argument as the value of the function call? Is it just good practise? Yes, PHP and many other languages borrowed the return keyword from ‘C’. And in all the languages, the return keyword has the same function – to return from the function. Anything that follows return keyword is the value that is … Read more