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How to write the Fibonacci Sequence?
... yield cur
for i in SubFib(10, 200):
print i
My hint is to learn to read what you need. Project Euler (google for it) will train you to do so :P
Good luck and have fun!
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When should I use the Visitor Design Pattern? [closed]
...he visitor pattern in blogs but I've got to admit, I just don't get it. I read the wikipedia article for the pattern and I understand its mechanics but I'm still confused as to when I'd use it.
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Qt events and signal/slots
... can get delivered immediately or deferred via a queue (if you are using threads).
A signal can be generated.
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Pseudo-terminal will not be allocated because stdin is not a terminal
...ols like cat, and don't mind having two statements instead of one, use the read built-in with a heredoc to generate the SSH command:
IFS='' read -r -d '' SSH_COMMAND <<'EOT'
echo "These commands will be run on: $( uname -a )"
echo "They are executed by: $( whoami )"
EOT
ssh user@server "${SS...
How can I save my secret keys and password securely in my version control system?
...box or whoever is storing your files under VC does not have the ability to read the information in plaintext.
Tutorial on Transparent Encryption/Decryption during Push/Pull
This gist https://gist.github.com/873637 shows a tutorial on how to use the Git's smudge/clean filter driver with openssl to ...
How can I rename a field for all documents in MongoDB?
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@Steve name.last is not table.field. If you read the question, you can see that the name field holds an object.
– Marc Dingena
Oct 1 '15 at 8:31
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What characters do I need to escape in XML documents?
...ppearing in the literal string “]]>” because otherwise that will be read as ending a CDATA section. For single-quote and double-quote, you can escape if you want to. That's it, for chardata inside elements. Other components of XML have other rules.
– s-k-y-e---c-a-p-t...
Use RSA private key to generate public key?
...H-KEYGEN(1)
ssh-keygen -y [-f input_keyfile]
-y This option will read a private OpenSSH format file and print an OpenSSH public key to stdout.
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Jelly Bean DatePickerDialog — is there a way to cancel?
--- Note to moderators: Today (July 15), I've noticed that someone already faced this problem here . But I'm not sure if it's appropriate to close this as a duplicate, since i think I provided a much better explanation of the issue. I'm not sure if I should edit the other question and paste this ...
Callback functions in C++
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A function pointer is the 'simplest' (in terms of generality; in terms of readability arguably the worst) type a callback can have.
Let's have a simple function foo:
int foo (int x) { return 2+x; }
1.1 Writing a function pointer / type notation
A function pointer type has the notation
return...