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Long press on UITableView
...view:
UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:@selector(handleLongPress:)];
lpgr.minimumPressDuration = 2.0; //seconds
lpgr.delegate = self;
[self.myTableView addGestureRecognizer:lpgr];
[lpgr release];
Then in the gesture handler:
...
How to increment a pointer address and pointer's value?
... an example, this might help;
char **str;
str = (char **)malloc(sizeof(char*)*2); // allocate mem for 2 char*
str[0]=(char *)malloc(sizeof(char)*10); // allocate mem for 10 char
str[1]=(char *)malloc(sizeof(char)*10); // allocate mem for 10 char
strcpy(str[0...
Static variables in member functions
...ted meanings in C++
When used for data members it means that the data is allocated in the class and not in instances.
When used for data inside a function it means that the data is allocated statically, initialized the first time the block is entered and lasts until the program quits. Also the var...
How to customize the background color of a UITableViewCell?
...ll's background is panted yellow:
UIView* backgroundView = [ [ [ UIView alloc ] initWithFrame:CGRectZero ] autorelease ];
backgroundView.backgroundColor = [ UIColor yellowColor ];
cell.backgroundView = backgroundView;
for ( UIView* view in cell.contentView.subviews )
{
view.backgroundColor =...
Eclipse error: 'Failed to create the Java Virtual Machine'
...retty old now but I have just had the same issue and the problem was I was allocating to much memory to eclipse that it could not get hold of. So open eclipse.ini and lower the amount of memory that is being allocated to -Xmx XXMaxPermSize I changed mine to -Xmx512m and XXMaxPermSize256m
...
Are the days of passing const std::string & as a parameter over?
...ith `str`.
m_str = str;
}
Hello, copy constructor and potential memory allocation (ignore the Short String Optimization (SSO)). C++11's move semantics are supposed to make it possible to remove needless copy-constructing, right? And A passes a temporary; there's no reason why C should have to co...
When to use virtual destructors?
...destructor called
So the destruction of the base pointer (which takes an allocation on derived object!) follows the destruction rule, i.e first the Derived, then the Base.
On the other hand, there is nothing like a virtual constructor.
...
Javascript swap array elements
...sion is likely inefficient as it is generating a new and unnecessary array allocation.
– Chris_F
Jul 12 at 23:53
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Iterator invalidation rules
...s
vector: The functions insert, emplace_back, emplace, push_back cause reallocation if the new size is greater than the old capacity. Reallocation invalidates all the references, pointers, and iterators referring to the elements in the sequence. If no reallocation
happens, all the iterators and re...
Assertion failure in dequeueReusableCellWithIdentifier:forIndexPath:
...ier:CellIdentifier];
if (cell==nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
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