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Why is the shovel operator (
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This answer is based on a false premise: both allocating and freeing short-lived objects is essentially free in any halfway decent modern GC. It is at least as fast as stack allocation in C and significantly faster than malloc / free. Also, some more modern Ruby implemen...
How to copy an object in Objective-C
...ne
{
// We'll ignore the zone for now
YourClass *another = [[YourClass alloc] init];
another.obj = [obj copyWithZone: zone];
return another;
}
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Long press gesture on UICollectionViewCell
...ILongPressGestureRecognizer *lpgr
= [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:@selector(handleLongPress:)];
lpgr.delegate = self;
lpgr.delaysTouchesBegan = YES;
[self.collectionView addGestureRecognizer:lpgr];
}
-(void)handleLongPress:...
TypeScript type signatures for functions with variable argument counts
...rs;
}
Then you can call it:
headers: this.getHeaders(new Header('X-Auth-Token', this.getToken()))
Or
headers: this.getHeaders(new Header('X-Auth-Token', this.getToken()), new Header('Something', "Else"))
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AngularJS $http, CORS and http authentication
....headers.origin,
"AccessControlAllowHeaders": "Content-Type,X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Date, X-Api-Version, X-File-Name",
"AccessControlAllowMethods": "POST, GET, PUT, DELETE, OPTIONS",
"AccessControlAllowCredentials"...
Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
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Yes. Enumerable<>.Empty does avoid allocating a new object, which is a small bonus.
– Neil
Jan 4 '10 at 18:38
13
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Smart pointers: who owns the object? [closed]
..., these 3 kinds cover most of my needs:
shared_ptr - reference-counted, deallocation when the counter reaches zero
weak_ptr - same as above, but it's a 'slave' for a shared_ptr, can't deallocate
auto_ptr - when the creation and deallocation happen inside the same function, or when the object has ...
Eclipse executable launcher error: Unable to locate companion shared library
... reinstalling isn't that hard - download, unzip, change the default memory allocation, run Eclipse, install necessary plugins and features.
And almost all of the important preferences are in your workspace. The only important one I can think of outside of the workspace is the aforementioned memory ...
What's the point of having pointers in Go?
...struct as a reference type when you find that useful e.g. to create a pool allocator (see below).
Custom Memory Allocator
Using pointers you can also create your own pool allocator (this is very simplified with lots of checks removed to just show the principle):
type TreeNode {
value int
le...
Reducing memory usage of .NET applications?
...user operates, you can get away with being more lackadaisical about memory allocation. (So long as it all gets deallocated.)
However, to address some folks here who say not to worry about it: If you're writing a Windows Forms application which will be running in a terminal services environment, on a...