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Combining C++ and C - how does #ifdef __cplusplus work?
...gh the C++ compiler. Generally, that means .cpp files and any files being included by that .cpp file. The same .h (or .hh or .hpp or what-have-you) could be interpreted as C or C++ at different times, if different compilation units include them. If you want the prototypes in the .h file to refer ...
ruby inheritance vs mixins
In Ruby, since you can include multiple mixins but only extend one class, it seems like mixins would be preferred over inheritance.
...
How is attr_accessible used in Rails 4?
...nd you can also use protected_attributes gem that way
class NestedForm
include ActiveModel::MassAssignmentSecurity
attr_accessible :name,
:telephone, as: :create_params
def create_objects(params)
SomeModel.new(sanitized_params(params, :create_params))
end
end
...
XML parsing of a variable string in JavaScript
...@SanderVersluys: since the author is not accepting another answer, I would include a note in your answer linking to @TimDown's correct answer. That way people don't have to read all these comments to figure out the correct answer.
– Senseful
Jan 24 '12 at 4:44
...
Is gettimeofday() guaranteed to be of microsecond resolution?
...
clock_gettime was included in POSIX in 2001. as far as I know currently clock_gettime() implemented in Linux 2.6 and qnx. but linux 2.4 is currently used in many production systems.
– vitaly.v.ch
Jun 25 '...
How to increment a pointer address and pointer's value?
...tion of the various "just print it" suggestions. I found it instructive.
#include "stdio.h"
int main() {
static int x = 5;
static int *p = &x;
printf("(int) p => %d\n",(int) p);
printf("(int) p++ => %d\n",(int) p++);
x = 5; p = &x;
printf("(int) ++p => %d...
MongoDB or CouchDB - fit for production? [closed]
... posts, to every image on the site.
shopwiki is using it for a few things including real time analytics and a caching layer. They are doing over 1000 writes per second to a fairly large database.
If you go to the mongodb Production Deployments page you'll see some people who are using mongo in pro...
Difference between initLoader and restartLoader in LoaderManager
...n changes
A LoaderManager retains its state across configuration changes (including orientation changes) so you would think there's nothing left for us to do. Think again...
First of all, a LoaderManager doesn't retain the callbacks, so if you do nothing you won't receive calls to your callback me...
Change One Cell's Data in mysql
... is welcome, and may provide some help, it would be greatly improved if it included an explanation of how it addresses the question. Without that, your answer has much less educational value - remember that you are answering the question for readers in the future, not just the person asking now! P...
How do I check if an array includes a value in JavaScript?
...
Modern browsers have Array#includes, which does exactly that and is widely supported by everyone except IE:
console.log(['joe', 'jane', 'mary'].includes('jane')); //true
You can also use Array#indexOf, which is less direct, but doesn't requir...