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How do I declare class-level properties in Objective-C?
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Erik Aigner
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answered Mar 30 '09 at 4:50
Andrew GrantAndrew Grant
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
... your cache. L is always power of 2.
The six comes from fact that 2^6 == 64 bytes is standard size of cache line.
Now what does this mean? Well it means that if I have address X and address Y and
(X >> 6) - (Y >> 6) is divisible by L (i.e. some large power of 2), they will be stored i...
C# Double - ToString() formatting with two decimal places but no rounding
...Truncate(myDoubleValue * 100) / 100;
For instance:
If the number is 50.947563 and you use the following, the following will happen:
- Math.Truncate(50.947563 * 100) / 100;
- Math.Truncate(5094.7563) / 100;
- 5094 / 100
- 50.94
And there's your answer truncated, now to format the string simply ...
Fast ceiling of an integer division in C / C++
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401
For positive numbers
unsigned int x, y, q;
To round up ...
q = (x + y - 1) / y;
or (avoi...
Mercurial error: abort no username supplied
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94
Solution:
On my Windows install, the Mercurial.ini did not get propagated. It also needs a user...
Sending and Receiving SMS and MMS in Android (pre Kit Kat Android 4.4)
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answered Feb 14 '13 at 13:23
Manan SharmaManan Sharma
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Syntax behind sorted(key=lambda: …)
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edited Oct 24 '14 at 14:06
Gaurang Tandon
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How to use enums as flags in C++?
...num AnimalFlags
{
HasClaws = 1,
CanFly = 2,
EatsFish = 4,
Endangered = 8
};
inline AnimalFlags operator|(AnimalFlags a, AnimalFlags b)
{
return static_cast<AnimalFlags>(static_cast<int>(a) | static_cast<int>(b));
}
Etc. rest of the bit operators. Modi...
Is it better to call ToList() or ToArray() in LINQ queries?
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answered May 1 '13 at 17:42
JaredParJaredPar
648k133133 gold badges11601160 silver badges13951395 bronze badges
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What's the fastest way to loop through an array in JavaScript?
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346
After performing this test with most modern browsers:
https://jsben.ch/wY5fo
Currently, the fas...