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How can you find out which process is listening on a port on Windows?
...er, powershell
Get-Process -Id (Get-NetTCPConnection -LocalPort YourPortNumberHere).OwningProcess
Old answer, cmd
C:\> netstat -a -b
(Add -n to stop it trying to resolve hostnames, which will make it a lot faster.)
Note Dane's recommendation for TCPView. It looks very useful!
-a Displays all ...
mmap() vs. reading blocks
I'm working on a program that will be processing files that could potentially be 100GB or more in size. The files contain sets of variable length records. I've got a first implementation up and running and am now looking towards improving performance, particularly at doing I/O more efficiently since...
Oracle “Partition By” Keyword
Can someone please explain what the partition by keyword does and give a simple example of it in action, as well as why one would want to use it? I have a SQL query written by someone else and I'm trying to figure out what it does.
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How to remove newlines from beginning and end of a string?
I have a string that contains some text followed by a blank line. What's the best way to keep the part with text, but remove the whitespace newline from the end?
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How do I check if a string is a number (float)?
What is the best possible way to check if a string can be represented as a number in Python?
33 Answers
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Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp?
...#endif
This is a preprocessor technique of preventing a header file from being included multiple times, which can be problematic for various reasons. During compilation of your project, each .cpp file (usually) is compiled. In simple terms, this means the compiler will take your .cpp file, open ...
What is an xs:NCName type and when should it be used?
... which is qualified name e.g. "ns:name". If your names are not supposed to be qualified by different namespaces, then they are NCNames.
xs:string puts no restrictions on your names at all, but xs:NCName basically disallows ":" to appear in the string.
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CSS Selector “(A or B) and C”?
This should be simple, but I'm having trouble finding the search terms for it.
Let's say I have this:
4 Answers
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Rotating a two-dimensional array in Python
...for the optimal solution I found this impressive one-liner that does the job:
7 Answers
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Block Comments in a Shell Script
Is there a simple way to comment out a block of code in a shell script?
12 Answers
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