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performSelector may cause a leak because its selector is unknown
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So I got confirmation from somebody at Apple in their forums that this is indeed the case. They'll be adding a forgotten override to allow ...
Do you use NULL or 0 (zero) for pointers in C++?
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cerr << sizeof(void*) << endl;
============
On a 64-bit gcc RHEL platform you get:
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8
8
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The moral of the story. You should use NULL when you're dealing with pointers.
1) It declares your intent (don't make me search through all your cod...
What are copy elision and return value optimization?
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Standard reference
For a less technical view & introduction - skip to this answer.
For co...
byte + byte = int… why?
... With ints it does overflow. Try adding int.MaxValue + 1 you get -2147483648 instead of 2147483648.
– David Basarab
Jun 2 '09 at 20:13
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JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...ultiplyByZer0
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answered Jan 23 '13 at 12:51
Rigg802Rigg802
2,61611 gold bad...
How do you detect Credit card type based on number?
...at you make the field wide enough to display 32 characters and allow up to 64; that gives plenty of headroom for expansion.
Here's an image that gives a little more insight:
UPDATE (2014): The checksum method no longer appears to be a valid way of verifying a card's authenticity as noted in the co...
SparseArray vs HashMap
...<V> values;
}
Class = 12 + 8 * 4 = 48 bytes
Entry = 32 + 16 + 16 = 64 bytes
Array = 20 + 1000 * 64 = 64024 bytes
Total = 64,136 bytes
Source: Android Memories by Romain Guy from slide 90.
The numbers above are the amount of memory (in bytes) allocated on heap by JVM.
They may vary dependin...
Why not use exceptions as regular flow of control?
... a switch statement, but it'd be pretty silly.
– Thor84no
Jan 5 '18 at 20:37
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Forward an invocation of a variadic function in C
...Rosenfield
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What is the difference between Int and Integer?
...ay
recognise the "bignum" type here.
"Int" is the more common 32 or 64 bit
integer. Implementations vary,
although it is guaranteed to be at
least 30 bits.
Source: The Haskell Wikibook. Also, you may find the Numbers section of A Gentle Introduction to Haskell useful.
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