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How to use shared memory with Linux in C
... } else
printf("segment contains: \"%s\"\n", data);
/* detach from the segment: */
if (shmdt(data) == -1) {
perror("shmdt");
exit(1);
}
return 0;
}
Steps :
Use ftok to convert a pathname and a project identifier to a System V IPC key
Use shmget which a...
Why are arrays of references illegal?
... @AaronMcDaid I think the real reason - which is so conspicuously absent from this & similar discussions - is that if one had an array of references, how would one possibly disambiguate between the address of an element & the address of its referent? The immediate objection to 'You can't p...
Should operator
...o use a stream-like object of type T.
And that you want to extract/insert from/into T the relevant data of your object of type Paragraph.
Generic operator << and >> function prototypes
The first being as functions:
// T << Paragraph
T & operator << (T & p_oOutputS...
Creating an instance of class
...
Allocates some dynamic memory from the free store, and creates an object in that memory using its default constructor. You never delete it, so the memory is leaked.
Does exactly the same as 1; in the case of user-defined types, the parentheses are optiona...
How to change the font size on a matplotlib plot
...
From the matplotlib documentation,
font = {'family' : 'normal',
'weight' : 'bold',
'size' : 22}
matplotlib.rc('font', **font)
This sets the font of all items to the font specified by the kwargs object, ...
Ideal Ruby project structure
...
See the following example from http://guides.rubygems.org/what-is-a-gem/
% tree freewill
freewill/
├── bin/
│ └── freewill
├── lib/
│ └── freewill.rb
├── test/
│ └── test_f...
How do I request a file but not save it with Wget? [closed]
...
Uh, I tried this and it didn't work for me. From what I found out, the ampersand should come after the greater than symbol.
– Tiago Espinha
Jul 12 '13 at 10:32
...
Where to store global constants in an iOS application?
... @AnsonYao usually when that happens to me I forgot to remove a semicolon from the #define, such as #define kBaseURL @"http://192.168.0.123/";
– Gyfis
Apr 11 '15 at 22:13
...
How do I see the extensions loaded by PHP?
...
the list from php -m is much longer than get_loaded_extensions() which does not list curl, mbstring and many others? why is that? I installed curl, mbstring but they don't seem to show from the php script?
– Mer...
Why is UICollectionViewCell's outlet nil?
...
I think that best solution is to directly use from storyboard where add a CollectionView, in alternative you need to remove a CollectionViewCell from your CollectionView in storyboard and register a cell with the following command:
collectionView?.register(UINib(nibN...