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Swift: Pass array by reference?
... when I add a chat to account.chats , chatsViewController.chats still points to account.chats ). I.e., I don't want Swift to separate the two arrays when the length of account.chats changes.
...
How do I create a random alpha-numeric string in C++?
...;
#include <unistd.h>
using namespace std;
string gen_random(const int len) {
string tmp_s;
static const char alphanum[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";
srand( (unsigned) time(NULL) * getpid());
...
How do I access this object property with an illegal name?
...ibility:
$todolist = 'todo-list';
echo $x->$todolist;
If you wanted to convert it to an array, which can be a little more easily (ie the obvious $ret['todo-list'] accessing), this code is taken almost verbatim from Zend_Config and will convert for you.
public function toArray()
{
$array = a...
Object-orientation in C
...sic level, you just use plain structs as objects and pass them around by pointers:
struct monkey
{
float age;
bool is_male;
int happiness;
};
void monkey_dance(struct monkey *monkey)
{
/* do a little dance */
}
To get things like inheritance and polymorphism, you have to work a l...
Determine if Android app is being used for the first time
...
SharedPreferences are maintained during upgrade. So, I assume that when its being upgraded from PlayStore, old value is available. In fact it is applicable for other methods i.e. checking existence of file too. So, shortcut method in that case is to...
Why are there no ++ and -- operators in Python?
...n't needed as much as in other languages. You don't write things like for(int i = 0; i < 10; ++i) in Python very often; instead you do things like for i in range(0, 10).
Since it's not needed nearly as often, there's much less reason to give it its own special syntax; when you do need to increm...
Use of exit() function
...
Try using exit(0); instead. The exit function expects an integer parameter. And don't forget to #include <stdlib.h>.
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Programmatically scroll to a specific position in an Android ListView
...st one tries to set in the middle of list.
– Victor Pinto
May 12 '14 at 18:13
11
smoothScrollToPo...
Creating an R dataframe row-by-row
...me rows, concatenate them using c(), pass them to a matrix row-by-row, and convert that matrix to a dataframe.
For example, rows
dummydata1=c(2002,10,1,12.00,101,426340.0,4411238.0,3598.0,0.92,57.77,4.80,238.29,-9.9)
dummydata2=c(2002,10,2,12.00,101,426340.0,4411238.0,3598.0,-3.02,78.77,-9999.00,-...
Importing a Maven project into Eclipse from Git
...ion to these issues:
You can't install m2e-egit (I get an error in Juno)
Converting a general project (connected to your Git repository) to a Maven project isn't working for you (The Import Maven Projects step seems essential)
Importing Maven Projects from your repository on the filesystem isn't s...