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How to implement a queue using two stacks?
Suppose we have two stacks and no other temporary variable.
20 Answers
20
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What methods of ‘clearfix’ can I use?
...ut. My sidebar is floated, so my container div fails to wrap the content and sidebar.
29 Answers
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What does the function then() mean in JavaScript?
...guration. Then based on that, we fetch
information about the current user, and then finally get the list of items for the current
user. Each xhrGET call takes a callback function that is executed when the server
responds.
Now of course the more levels of nesting we have, the harder the code is to r...
How to do a GitHub pull request
How do I create and/or send a pull request to another repository hosted on GitHub?
8 Answers
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Efficiency of purely functional programming
... Pippenger [1996], when comparing a Lisp system that is purely functional (and has strict evaluation semantics, not lazy) to one that can mutate data, an algorithm written for the impure Lisp that runs in O(n) can be translated to an algorithm in the pure Lisp that runs in O(n log n) time (based on ...
Check number of arguments passed to a Bash script
...
Just like any other simple command, [ ... ] or test requires spaces between its arguments.
if [ "$#" -ne 1 ]; then
echo "Illegal number of parameters"
fi
Or
if test "$#" -ne 1; then
echo "Illegal number of parameters"
fi
Suggestions
When in Bash,...
How to unit test abstract classes: extend with stubs?
I was wondering how to unit test abstract classes, and classes that extend abstract classes.
14 Answers
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Renaming a branch in GitHub
...
As mentioned, delete the old one on GitHub and re-push, though the commands used are a bit more verbose than necessary:
git push origin :name_of_the_old_branch_on_github
git push origin new_name_of_the_branch_that_is_local
Dissecting the commands a bit, the git push ...
What do pty and tty mean?
I noticed there are many mentions of pty and tty in some opensource projects, could someone can tell me what do they mean and what is the difference between them? Thanks!
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Installing PDO driver on MySQL Linux server
...long ago, to change my code to use PDO in order to parameterize my queries and safely save HTML in the database.
6 Answers
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