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What is the difference between a definition and a declaration?
...bes its type, be it a type, object, or function. A declaration is what the compiler needs to accept references to that identifier. These are declarations:
extern int bar;
extern int g(int, int);
double f(int, double); // extern can be omitted for function declarations
class foo; // no extern allow...
How do I create a unique constraint that also allows nulls?
... edited May 23 '17 at 12:10
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answered Apr 20 '09 at 10:20
Jose BasilioJose Ba...
IEnumerable vs List - What to Use? How do they work?
...an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away.
Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because...
What is time_t ultimately a typedef to?
...s of
arithmetic operations applied to time
values.
Unix and POSIX-compliant systems implement the time_t type as a signed
integer (typically 32 or 64 bits wide)
which represents the number of seconds
since the start of the Unix epoch:
midnight UTC of January 1, 1970 (not
counting ...
Why does this code using random strings print “hello world”?
... @Vulcan - the javadoc says that the seed is 48 bits. docs.oracle.com/javase/7/docs/api/java/util/Random.html. And besides, the actual seeds are 32 bit values.
– Stephen C
Mar 3 '13 at 4:58
...
Binary Data in JSON String. Something better than Base64
...However, this is only a 7% improvement over base64, it's more expensive to compute, and implementations are less common than for base64 so it's probably not a win.
You could also simply map every input byte to the corresponding character in U+0000-U+00FF, then do the minimum encoding required by th...
Determine if running on a rooted device
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How can I create a UIColor from a hex string?
...hex format string to an integer for use with this macro, see stackoverflow.com/questions/3648411/….
– devios1
Aug 14 '14 at 21:18
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