void main()
{
int a={1,2,3,4,5,6,7,8,9,10};
int *p=a;
int *q=&a;
cout<<q-p+1<<endl;
}
The output is 10, how?
if we give cout<<q it will print the address, value won't print....
if we give cout<<p it will print the address, value won't print....
p has the base addr; q... (1 Reply)
hi all:
bankpro again,
i want to open a file and close it after an hour (i.e open and close the file ptr)
In the mean time i will be executing my jobs using the shell (CommandInterpreter).
plz help... :cool: (3 Replies)
Hi,
char *s="yamaha";
cout<<s<<endl;
int *p;
int i=10;
p=&i;
cout<<p<<endl;
1) For the 1st "cout" we will get "yamaha" as output. That is we are getting "content of the address" for cout<<s.
2) But for integer "cout<<p" we are getting the "address only".
Please clarify how we are... (2 Replies)
I have a text file that has blocks of text. Each block starts with ### and ends with End_###.
I wrote a perl script to search a string from line 2 (ignore any line starts with ###) of each block
if matched, need to print that whole block. According to the input file in below, it will print... (5 Replies)
If one wants to get a start address of a array or a string or a block of memory via a function, there are at least two methods to achieve it:
(1) one is to pass a pointer-to-pointer parameter, like:
int my_malloc(int size, char **pmem)
{
*pmem=(char *)malloc(size);
if(*pmem==NULL)... (11 Replies)
Hi,
Can anyone tell me how i can declare and allocate dynamically an array of pointers to structured type?? Is declaration something like this:?
struct_name ** array; (1 Reply)
I have a fundamental question on C pointer arithmetry..
Suppose i have a c string pointer already pointing to a valid location, Can I just do a
charptr = charptr +1;
to get to the next location, irregardless if my program is 32 or 64 bits?
or should i do it this way:
charptr =... (1 Reply)
Hi guys, I'm trying to understand pointers in C and made a simple example and I've problems with It.
Can someone help?
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
int f1(char **str_);
int main(int argc, char **argv)
{
char *str = NULL;
f1(&str);
... (3 Replies)
Discussion started by: pharaoh
3 Replies
LEARN ABOUT DEBIAN
dancer::config::object
Dancer::Config::Object(3pm) User Contributed Perl Documentation Dancer::Config::Object(3pm)NAME
Dancer::Config::Object - Access the config via methods instead of hashrefs
DESCRIPTION
If "strict_config" is set to a true value in the configuration, the "config()" subroutine will return an object instead of a hashref.
Instead of this:
my $serializer = config->{serializer};
my $username = config->{auth}{username};
You get this:
my $serializer = config->serializer;
my $username = config->auth->username;
This helps to prevent typos. If you mistype a configuration name:
my $pass = config->auth->pass;
An exception will be thrown, tell you it can't find the method name, but listing available methods:
Can't locate config attribute "pass".
Available attributes: password, username
If the hash key cannot be converted into a proper method name, you can still access it via a hash reference:
my $some_value = config->{'99_bottles'};
And call methods on it, if possible:
my $sadness = config->{'99_more_bottles'}->last_bottle;
Hash keys pointing to hash references will in turn have those "objectified". Arrays will still be returned as array references. However,
hashrefs inside of the array refs may still have their keys allowed as methods:
my $some_value = config->some_list->[1]->host;
METHOD NAME DEFINITION
We use the following regular expression to determine if a hash key qualifies as a method:
/^[[:alpha:]_][[:word:]]*$/;
Note that this means "naA~Xve" (note the dots over the i) can be a method name, but unless you "use utf8;" to declare that your source code
is UTF-8, you may have disappointing results calling "config->naA~Xve". Further, depending on your version of Perl and the software to read
your config file ... well, you get the idea. We recommend sticking with ASCII identifiers if you wish your code to be portable.
Patches/suggestions welcome.
AUTHOR
This module has been written by Alexis Sukrieh <sukria@cpan.org> and others, see the AUTHORS file that comes with this distribution for
details.
LICENSE
This module is free software and is released under the same terms as Perl itself.
SEE ALSO
Dancer and Dancer::Config.
perl v5.14.2 2012-03-31 Dancer::Config::Object(3pm)