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Rolling or sliding window iterator?
...nder why the default window size should be 2? Should it have a default at all?
– SingleNegationElimination
Jul 25 '11 at 22:02
19
...
Servlet for serving static content
...;url-pattern>/</url-pattern>
</servlet-mapping>
This basically just maps all content files by extension to the default servlet, and everything else to "myAppServlet".
It works in both Jetty and Tomcat.
s...
Verifying signed git commits?
...o get access to the raw gpg status information, which is machine-readable, allowing automated implementation of signing policy.
Add a --raw option to make verify-tag produce the gpg status information on standard error instead of the human-readable format.
Plus:
verify-tag exits success...
Getting the count of unique values in a column in bash
... count the frequency of occurrence of the different values in a column for all the files in a folder and sort them in decreasing order of count (highest count first). How would I accomplish this in a Linux command line environment?
...
Is it possible to make a type only movable and not copyable?
...ess you explicitly implement it for your type:
struct Triplet {
one: i32,
two: i32,
three: i32
}
impl Copy for Triplet {} // add this for copy, leave it out for move
The implementation can only exist if every type contained in the new struct or enum is itself Copy. If not, the compile...
Can you run GUI applications in a Docker container?
...
You can simply install a vncserver along with Firefox :)
I pushed an image, vnc/firefox, here: docker pull creack/firefox-vnc
The image has been made with this Dockerfile:
# Firefox over VNC
#
# VERSION 0.1
# DOCKER-VERSION ...
Semantic Issue: Property's synthesized getter follows Cocoa naming convention for returning 'owned'
... the memory management rules for declared properties, too — more specifically, for declared properties’ accessors:
You take ownership of an object if you create it using a method whose name begins with “alloc”, “new”, “copy”, or “mutableCopy”.
A property named newTitle, whe...
What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
I just started using Qt and noticed that all the example class definitions have the macro Q_OBJECT as the first line. What is the purpose of this preprocessor macro?
...
How to make a valid Windows filename from an arbitrary string?
...: Bar" that I want to use as a filename, but on Windows the ":" char isn't allowed in a filename.
14 Answers
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How do I get the number of elements in a list?
...turns 3.
Explanation
Everything in Python is an object, including lists. All objects have a header of some sort in the C implementation.
Lists and other similar builtin objects with a "size" in Python, in particular, have an attribute called ob_size, where the number of elements in the object is...