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Are static variables shared between threads?
...e constructs, as well as the Thread.start() and Thread.join() methods, can form happens-before relationships. In particular:
Each action in a thread happens-before every action in that thread that comes later in the program's order.
An unlock (synchronized block or method exit) of a monitor happen...
Delete from the current cursor position to a given line number in vi editor
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Excellent. I was able to do ":.,63d" to perform the deletion example above. Thanks borrible!
– seanhodges
Jun 17 '11 at 10:45
add a comment
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How do I perform the SQL Join equivalent in MongoDB?
...ne.
– Clayton Gulick
Jan 9 '16 at 1:01
I cant join any field in array in left collection with its corresponding id in ...
PHP code to remove everything but numbers
...t it was a good idea to pass the regex flags with the double quoted /flags form instead of using an extra function parameter.
– Qtax
Jul 7 '11 at 0:28
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How do I clone a subdirectory only of a Git repository?
...s called a sparse checkout, and that feature was added in git 1.7.0 (Feb. 2012). The steps to do a sparse clone are as follows:
mkdir <repo>
cd <repo>
git init
git remote add -f origin <url>
This creates an empty repository with your remote, and fetches all objects but doesn't c...
Practical uses for the “internal” keyword in C#
...framework for building graphical user interfaces could provide Control and Form classes that cooperate using members with internal access. Since these members are internal, they are not exposed to code that is using the framework.
You can also use the internal modifier along with the InternalsVisi...
How to throw an exception in C?
... (GNU libc)) or the CPU hardware interruption (or other notification error form the CPU if there is)(How processor handles the case of division by zero).
Exceptions are defined in C++ and other languages though. Exception handling in C++ is specified in the C++ standard "S.15 Exception handling", t...
How to Set Focus on Input Field using JQuery
... Yes, you can write it either way. I suppose input:first might be the more formal way to write it, although it seems easier to read the other way. But maybe that's just me :)
– Justin Ethier
Jul 18 '11 at 20:17
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what is the most efficient way of counting occurrences in pandas?
... each selected column to str type, stacking all individual columns on top, forming basically one column and then doing the value_counts() and sum() on that one column. :) Stack is pretty useful, it might not be the most obvious choice, but worked like a charm for my use-case :)
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Relative paths based on file location instead of current working directory [duplicate]
...n -f here, because it is the most well-known one.
Multi-(Unix-like-)platform solution (including platforms with a POSIX-only set of utilities):
If your script must run on any platform that:
has a readlink utility, but lacks the -f option (in the GNU sense of resolving a symlink to its ultimate...