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Is there a way for multiple processes to share a listening socket?
In socket programming, you create a listening socket and then for each client that connects, you get a normal stream socket that you can use to handle the client's request. The OS manages the queue of incoming connections behind the scenes.
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Get fully qualified class name of an object in Python
... object. (With fully qualified I mean the class name including the package and module name.)
10 Answers
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Cmake vs make sample codes?
I was wondering if there was any sample code for Makefile s ( make ) and CMakeLists.txt ( cmake ) that both do the same thing (the only difference being that one is written in make and the other in cmake ).
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How to check status of PostgreSQL server Mac OS X
...e simplest way to to check running processes:
ps auxwww | grep postgres
And look for a command that looks something like this (your version may not be 8.3):
/Library/PostgreSQL/8.3/bin/postgres -D /Library/PostgreSQL/8.3/data
To start the server, execute something like this:
/Library/PostgreS...
Finding duplicate rows in SQL Server
I have a SQL Server database of organizations, and there are many duplicate rows. I want to run a select statement to grab all of these and the amount of dupes, but also return the ids that are associated with each organization.
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One-liner to take some properties from object in ES 6
... general. Here is a more idiomatic version of it which uses Object.assign, and computed properties (the [p] part):
function pick(o, ...props) {
return Object.assign({}, ...props.map(prop => ({[prop]: o[prop]})));
}
If we want to preserve the properties' attributes, such as configurable and...
Scala: Abstract types vs generics
...s Type System
A Conversation with Martin Odersky, Part III
by Bill Venners and Frank Sommers (May 18, 2009)
Update (October2009): what follows below has actually been illustrated in this new article by Bill Venners:
Abstract Type Members versus Generic Type Parameters in Scala (see summary at the ...
C++ performance challenge: integer to std::string conversion
...e very fast, can take 100 clockticks when linking CRT as a static library, and as much as 300 clockticks when linking as a DLL.
For the same reason, returning by reference is better because it avoids an assignment, a constructor and a destructor.
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How do you rotate a two dimensional array?
...e. Printing the matrix is the same complexitiy
– Alejandro
Aug 4 '15 at 20:34
6
For a -90 degrees...
What's an easy way to read random line from a file in Unix command line?
What's an easy way to read random line from a file in Unix command line?
13 Answers
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