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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 populate/instantiate a C# array with a single value?
...ence, so it has to guess as to the array size. That means you'll get array allocations every time ToArray's buffer is exceeded, plus one more allocation at the end for the trim. There's also overhead involved with the enumerable object.
– Edward Brey
Feb 12 '16...
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...
Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7
...w.tableHeaderView = nil;, I do:
self.tableView.tableHeaderView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.tableView.bounds.size.width, 0.01f)];
I like this solution better than setting a somewhat arbitrary contentInset.top because I use the contentInset.top dynamically as well. ...
Assertion failure in dequeueReusableCellWithIdentifier:forIndexPath:
...ier:CellIdentifier];
if (cell==nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
solved
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Immutable array in Java
.... Since even an empty array takes up some memory, you can save that memory allocation by creating a constant empty array, and always passing it to the toArray method. That method will allocate a new array if the array you pass doesn't have enough space, but if it does (the list is empty), it will re...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...red when the attribute is a pointer to a reference counted object that was allocated on the heap. Allocation should look something like:
NSObject* obj = [[NSObject alloc] init]; // ref counted var
The setter generated by @synthesize will add a reference count to the object when it is copied so the ...
How to compare two NSDates: Which is more recent?
...
NSDate *retVal;
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay:days];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
retVal = [gregorian dateByAddingComponents:components toDate:self options:0];
...