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Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...nstead supports RAII: "Resource Acquisition Is Initialization" -- a poor na<em>mem>e† for a really useful concept.
The idea is that an object's destructor is responsible for freeing resources. When the object has auto<em>mem>atic storage duration, the object's destructor will be called when the block in whi...
Find the IP address of the client in an SSH session
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Check if there is an environ<em>mem>ent variable called:
$SSH_CLIENT
OR
$SSH_CONNECTION
(or any other environ<em>mem>ent variables) which gets set when the user logs in. Then process it using the user login script.
Extract the IP:
$ echo $SSH_CLIENT | awk '{...
How to create an array containing 1…N
I'<em>mem> looking for any alternatives to the below for creating a JavaScript array containing 1 through to N where N is only known at runti<em>mem>e.
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How is a tag different fro<em>mem> a branch in Git? Which should I use, here?
I a<em>mem> having so<em>mem>e difficulty understanding how to use tags versus branches in git .
12 Answers
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How to avoid overflow in expr. A * B - C * D
I need to co<em>mem>pute an expression which looks like:
A*B - C*D , where their types are: signed long long int A, B, C, D;
Each nu<em>mem>ber can be really big (not overflowing its type). While A*B could cause overflow, at sa<em>mem>e ti<em>mem>e expression A*B - C*D can be really s<em>mem>all. How can I co<em>mem>pute it correctly...
Exposing a port on a live Docker container
I'<em>mem> trying to create a Docker container that acts like a full-on virtual <em>mem>achine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a co<em>mem><em>mem>and to open/<em>mem>ap addi...
How do I get ti<em>mem>e of a Python progra<em>mem>'s execution?
I have a co<em>mem><em>mem>and line progra<em>mem> in Python that takes a while to finish. I want to know the exact ti<em>mem>e it takes to finish running.
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Can I use git diff on untracked files?
...ble to ask git diff to include untracked files in its diff output, or is <em>mem>y best bet to use git add on the newly created files and the existing files I have edited, then use:
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Learning Regular Expressions [closed]
I don't really understand regular expressions. Can you explain the<em>mem> to <em>mem>e in an easy-to-follow <em>mem>anner? If there are any online tools or books, could you also link to the<em>mem>?
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Can we have functions inside functions in C++?
I <em>mem>ean so<em>mem>ething like:
12 Answers
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