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Calling constructors in c++ without new
... the most common way of creating new dynamic objects instead of using auto_ptr, unique_ptr, or related.
– Fred Nurk
Jan 18 '11 at 13:18
3
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'typeid' versus 'typeof' in C++
...gives information about the runtime type of the value.
typeof Reference: http://www.delorie.com/gnu/docs/gcc/gcc_36.html
typeid Reference: https://en.wikipedia.org/wiki/Typeid
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'const int' vs. 'int const' as function parameters in C++ and C
...t to another int.
See https://isocpp.org/wiki/faq/const-correctness#const-ptr-vs-ptr-const.
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How to call a Python function from Node.js
...%j', results);
});
For the full documentation and source code, check out https://github.com/extrabacon/python-shell
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What port is a given program using? [closed]
...need more functionality than netstat provides, vasac suggests that you try TCPView.
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Which $_SERVER variables are safe?
... from and hence whether it can be trusted for a certain purpose. $_SERVER['HTTP_FOOBAR'] for example is entirely safe to store in a database, but I most certainly wouldn't eval it.
As such, let's divide those values into three categories:
Server controlled
These variables are set by the server en...
Can I change a private readonly field in C# using reflection?
...
private unsafe void ForceSet()
{
fixed (int* ptr = &i) *ptr = 123;
}
static void Main(string[] args)
{
var program = new Program();
Console.WriteLine("Contructed Value: " + program.i);
program.ForceSet();
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How do you make an array of structs in C?
...(STUDENT), not sizeof(STUDENT*). You are making the exact mistake that the ptr = malloc(num * sizeof *ptr) idiom is supposed to guard against. Check it here (note the server, like most modern PCs, has 8 byte pointers so the sizes are 8 and 32 instead of 4 and 20).
– trentcl
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Find the host name and port using PSQL commands
...stat -plunt |grep postmaster
and you will see something similar as this
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 140/postgres
tcp6 0 0 ::1:5432 :::* LISTEN 140/postgres
in this case, port number is 5432 whi...
How can I tell gcc not to inline a function?
...able way to do this is to call the function through a pointer:
void (*foo_ptr)() = foo;
foo_ptr();
Though this produces different instructions to branch, which may not be your goal. Which brings up a good point: what is your goal here?
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