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What is a “callback” in C and how are they implemented?
...dlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include "../../common_typedef.h"
typedef void (*call_back) (S32, S32);
void test_call_back(S32 a, S32 b)
{
printf("In call back function, a:%d \t b:%d \n", a, b);
}
void call_callback_func(call_back back)...
How much is the overhead of smart pointers compared to normal pointers in C++?
... the iteration is done you'll know you have to erase it. So you could gain extra memory from not using a smart_ptr...
But do you really want to do that?
A single memory leak could make your product have a point of failure in time (let's say your program leaks 4 megabytes each hour, it would take mon...
.htaccess not working apache
...
I putted "A STRING" in my .htaccess, so I'd receive a error, so I putted AllowOverride All in all apache2.conf in my Debian and it works
– Alex
Dec 6 '17 at 2:20
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Is there a way to specify how many characters of a string to print out using printf()?
Is there a way to specify how many characters of a string to print out (similar to decimal places in int s)?
8 Answers
...
Take a char input from the Scanner
...seDelimiter("");
After this reader.next() will return a single-character string.
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What function is to replace a substring from a string in C?
Given a ( char * ) string, I want to find all occurrences of a substring and replace them with an alternate string. I do not see any simple function that achieves this in <string.h> .
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Length of string in bash
How do you get the length of a string stored in a variable and assign that to another variable?
8 Answers
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Calling C++ class methods via a function pointer
...ility with member pointers - Visual C++, at least in the past, needed some extra clues about how to represent member pointer types. I'd use the static function approach for an embedded system - the representation of a pointer is the same as any other function pointer, the costs are obvious, and ther...
How do I apply the for-each loop to every character in a String?
So I want to iterate for each character in a string.
9 Answers
9
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Can I mask an input text in a bat file?
...ate the "echo -n" command from the bash shell. It sets passwd to an empty string as an irrelevant side effect and doesn't wait for input since it's taking its input from the nul: device.
The "for /f "delims=" %%i in ('cscript /nologo getpwd.vbs') do set passwd=%%i" statement is the trickiest bit. ...