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Pointer to class data member “::*”
...emplate argument too, if we wanted:
// template<typename E, E *E::*next_ptr>
template<typename E>
struct List {
List(E *E::*next_ptr):head(0), next_ptr(next_ptr) { }
void add(E &e) {
// access its next pointer by the member pointer
e.*next_ptr = head;
...
delete vs delete[] operators in C++
...ed to de-allocate memory allocated for array of objects
class ABC{}
ABC *ptr = new ABC[100]
when we say new ABC[100], compiler can get the information about how many objects that needs to be allocated(here it is 100) and will call the constructor for each of the objects created
but correspondin...
20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...计是监控正在运行的系统和网络资源。它有一个内置的 HTTP web 服务去定期收集系统和网络信息并显示成图片。它可以监视系统的平均负载使用、内存的分配、磁盘驱动器、系统服务、网络端口、邮件统计（Sendmail、Postfix、Dovecot ...
Command line for looking at specific port
... -np <protocol> | find "port #"
So for example to check port 80 on TCP, you can do this: netstat -np TCP | find "80"
Which ends up giving the following kind of output:
TCP 192.168.0.105:50466 64.34.119.101:80 ESTABLISHED
TCP 192.168.0.105:50496 64.34.119.101:80 ESTAB...
Is it safe to parse a /proc/ file?
I want to parse /proc/net/tcp/ , but is it safe?
7 Answers
7
...
Server is already running in Rails
... Booting WEBrick
=> Rails 4.0.4 application starting in development on http://0.0.0.0:3000
=> Run rails server -h for more startup options
=> Ctrl-C to shutdown server
A server is already running. Check /your_project_path/tmp/pids/server.pid.
Exiting
So place your path shown here /your...
Left-pad printf with spaces
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How can I connect to Android with ADB over TCP? [closed]
...e ADB over Wi-Fi from the device with the commands:
su
setprop service.adb.tcp.port 5555
stop adbd
start adbd
And you can disable it and return ADB to listening on USB with
setprop service.adb.tcp.port -1
stop adbd
start adbd
From a computer, if you have USB access already (no root required)
It is...
How do you get assembler output from C/C++ source in gcc?
...lt objdump syntax into the more readable nasm syntax:
#!/usr/bin/perl -w
$ptr='(BYTE|WORD|DWORD|QWORD|XMMWORD) PTR ';
$reg='(?:[er]?(?:[abcd]x|[sd]i|[sb]p)|[abcd][hl]|r1?[0-589][dwb]?|mm[0-7]|xmm1?[0-9])';
open FH, '-|', '/usr/bin/objdump', '-w', '-M', 'intel', @ARGV or die;
$prev = "";
while(<F...
initializer_list and move semantics
...modifiable rvalue.
template<typename T>
class rref_capture
{
T* ptr;
public:
rref_capture(T&& x) : ptr(&x) {}
operator T&& () const { return std::move(*ptr); } // restitute rvalue ref
};
Now instead of declaring an initializer_list<T> argument, you declare ...