Put the following code before int main(): And you will be able to use cout. For example: Now take a moment and read up on what cout is and what is going on here: http://www.cplusplus.com/reference/iostream/cout/ Further, while its quick to do and it works, this is not exactly a good advice to simply add using namespace std; at the top … Read more
To stash your working directory including untracked files (especially those that are in the .gitignore) then you probably want to use this cmd: Alternatively, you can use the shorthand -u instead of –include-untracked, or simply git stash –all which stashes all files, including untracked and ignored files. This bahaviour changed in 2018, so make sure your git is up to date. Warning: there seems to … Read more
NoneType means that instead of an instance of whatever Class or Object you think you’re working with, you’ve actually got None. That usually means that an assignment or function call up above failed or returned an unexpected result.
You can use the ! operator to basically make any TRUE FALSE and every FALSE TRUE. so: EDIT: You can also make an operator yourself:
Vim has a builtin help system. I just quoted what it says to :h E212. You might want to edit the file as a superuser as sudo vim FILE. Or if you don’t want to leave your existing vim session (and now have proper sudo rights), you can issue: Which will save the file. HTH
What are undeclared identifier errors? What are common causes and how do I fix them? Example error texts: For the Visual Studio compiler: error C2065: ‘cout’ : undeclared identifier For the GCC compiler: ‘cout’ undeclared (first use in this function)
Django 1.5 supports Python 2.6.5 and later. If you’re under Linux and want to check the Python version you’re using, run python -V from the command line. If you want to check the Django version, open a Python console and type
If I start with a 3×4 array, and concatenate a 3×1 array, with axis 1, I get a 3×5 array: Note that both inputs to concatenate have 2 dimensions. Omit the :, and x[:,-1] is (3,) shape – it is 1d, and hence the error: The code for np.append is (in this case where axis is specified) So with a … Read more
You could use printf instead: printf has more consistent behavior than echo. The behavior of echo varies greatly between different versions.
I believe that all the previously proposed solutions (apart from those that require specific implementations) result in the comments being included in the output HTML, even if they are not displayed. If you want a comment that is strictly for yourself (readers of the converted document should not be able to see it, even with … Read more