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Reverse a string in Python
...lo world'[::-1]
'dlrow olleh'
This is extended slice syntax. It works by doing [begin:end:step] - by leaving begin and end off and specifying a step of -1, it reverses a string.
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Dealing with multiple Python versions and PIP?
...ces:
https://github.com/pypa/pip/issues/200
http://www.pip-installer.org/docs/pip/en/0.8.3/news.html#id4
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How to handle back button in activity
...() {
// your code.
}
older than API 5
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
// your code
return true;
}
return super.onKeyDown(keyCode, event);
}
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Copying files from host to Docker container
I am trying to build a backup and restore solution for the Docker containers that we work with.
41 Answers
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Difference between Array and List in scala
...ists which either have a known size (or maximum size) or for which fast random access is important.
Mutable Structures
ListBuffer provides a constant-time conversion to a List which is reason alone to use ListBuffer if such later conversion is required.
A scala Array should be implemented on the...
bool to int conversion
...atsoever (that applies to C99 as well). In C language relational operators do not produce bool results. Both 4 > 5 and 4 < 5 are expressions that produce results of type int with values 0 or 1. So, there's no "bool to int conversion" of any kind taking place in your examples in C.
In C++ rel...
Unauthorised webapi call returning login page rather than 401
How do I configure my mvc/webapi project so that a webapi method called from a razor view doesn't return the loginpage when its unauthorised?
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passport.js RESTful auth
How does one handle authentication (local and Facebook, for example) using passport.js, through a RESTful API instead of through a web interface?
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Implement Stack using Two Queues
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Version B seems having problem: do you mean enqueue all items of queue2 to queue1 except the last element (then switch the names of q1 and q2)?
– Icerman
May 24 '11 at 5:55
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Filter by process/PID in Wireshark
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I don't see how. The PID doesn't make it onto the wire (generally speaking), plus Wireshark allows you to look at what's on the wire - potentially all machines which are communicating over the wire. Process IDs aren't unique ac...