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std::string formatting like sprintf
I have to format std::string with sprintf and send it into file stream. How can I do this?
40 Answers
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What does the brk() system call do?
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In the diagram you posted, the "break"—the address manipulated by brk and sbrk—is the dotted line at the top of the heap.
The documentation you've read describes this as the end of the "data segment" because in traditional (pre-shared-libraries, pre-mmap) Unix the data segment was continuo...
How to sign an android apk file
... get stuck with after you work through it, I'd suggest:
https://developer.android.com/studio/publish/app-signing.html
Okay, a small overview without reference or eclipse around, so leave some space for errors, but it works like this
Open your project in eclipse
Press right-mouse - > tools (an...
How to select a single field for all documents in a MongoDB collection?
... MongoDB, I have a student collection with 10 records having fields name and roll . One record of this collection is:
1...
How to validate IP address in Python? [duplicate]
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Hmm, seems to accept things like "4" and "192.168" and silently pads the rest with zeros. Technically valid, I'm sure, but not quite what I expected.
– krupan
Nov 25 '08 at 23:58
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How to modify a global variable within a function in bash?
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When you use a command substitution (ie the $(...) construct), you are creating a subshell. Subshells inherit variables from their parent shells, but this only works one way - a subshell cannot modify the environment of its parent shell. Your v...
Concatenate two slices in Go
I'm trying to combine the slice [1, 2] and the slice [3, 4] . How can I do this in Go?
7 Answers
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How do I use valgrind to find memory leaks?
...un Valgrind
Not to insult the OP, but for those who come to this question and are still new to Linux—you might have to install Valgrind on your system.
sudo apt install valgrind # Ubuntu, Debian, etc.
sudo yum install valgrind # RHEL, CentOS, Fedora, etc.
Valgrind is readily usable for C/C++...
Understanding typedefs for function pointers in C
... took me a while to get around to such a definition while trying to understand a numerical algorithm written in C a while ago. So, could you share your tips and thoughts on how to write good typedefs for pointers to functions (Do's and Do not's), as to why are they useful and how to understand other...
tomcat - CATALINA_BASE and CATALINA_HOME variables
I have multiple instances of tomcat 6 running on the same server (Linux) and it works as expected. I am trying to find out what the standard practice is with regards to setting the CATALINA_HOME and CATALINA_BASE variables.
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