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Proper stack and heap usage in C++?
I've been programming for a while but It's been mostly Java and C#. I've never actually had to manage memory on my own. I recently began programming in C++ and I'm a little confused as to when I should store things on the stack and when to store them on the heap.
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What is an uninterruptible process?
...can potentially involve spinning up a hard drive, or moving heads. During most of this time, the process will be sleeping, blocking on the hardware.
While the process is sleeping in the system call, it can receive a Unix asynchronous signal (say, SIGTERM), then the following happens:
The system c...
Visibility of global variables in imported modules
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Globals in Python are global to a module, not across all modules. (Many people are confused by this, because in, say, C, a global is the same across all implementation files unless you explicitly make it static.)
There are different ways to solve this, depending on your ac...
When to make a type non-movable in C++11?
...gave a good example of a type which shouldn't be movable: std::mutex.
The OS's native mutex type (e.g. pthread_mutex_t on POSIX platforms) might not be "location invariant" meaning the object's address is part of its value. For example, the OS might keep a list of pointers to all initialized mutex ...
'^M' character at end of lines
...the SQL script as it is echoed to the command-line. I don't know on which OS the SQL script was originally created.
16 Ans...
Sublime Text 2 multiple line edit
...s relative to where they are, so they are still not uniformly at the same position in the line. how do i get all the cursors at the start of the line? (for context, i am just trying to add [space]*[space] at the beginning of each line).
– user1063287
Aug 14 '...
How to tell if node.js is installed or not
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Your OS is either 32-bit or 64-bit. When you install nodejs it picks the matching version.
– arikin
Apr 2 '15 at 7:50
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Using a piano keyboard as a computer keyboard [closed]
...sound (no pun).
MIDI is a stream of "events" (or "messages"), two of the most fundamental being "note on" and "note off" which carry with them the note number (0 = C five octaves below middle C, through 127 = G five octaves above the G above middle C, in semi-tones). These events carry a "velocity"...
How set background drawable programmatically in Android
...nother way to achieve it is to use the following:
final int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
layout.setBackgroundDrawable(ContextCompat.getDrawable(context, R.drawable.ready) );
} else {
layout.setBackground(ContextCompat.getDr...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...打算升级
升级过程很顺利
具体情况这里http://pkgs.org/centos-6/ghettoforge-testing-x86_64/openssh-6.6.1p1-4.gf.el6.x86_64.rpm.html
备份原有源
cd /etc/yum.repos.d/
mv rhel-source.repo rhel-source.repo.bak
mv packagekit-media.repo packagekit-media.repo.bak
配置源
vi C...