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Why is there no xrange function in Python3?
...86_64 but slower on x86, or faster in some use cases but slower in others, etc.). Nobody was likely worried about a 30% difference either way in how long it takes to iterate a range while doing nothing else.
– abarnert
Feb 22 '13 at 0:20
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Why would you use Expression rather than Func?
...voke' is not supported in LINQ to Entities.' and had to use ForEach after fetching the results.
– tymtam
Apr 29 '13 at 4:52
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What is the best way to compare floats for almost-equality in Python?
...t's worth noting that the documentation also says: "Modulo error checking, etc, the function will return the result of..." In other words, the isclose function (above) is not a complete implementation.
– rkersh
Jul 14 '16 at 19:50
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Purpose of ESI & EDI registers?
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In addition to the string operations (MOVS/INS/STOS/CMPS/SCASB/W/D/Q etc.) mentioned in the other answers, I wanted to add that there are also more "modern" x86 assembly instructions that implicitly use at least EDI/RDI:
The SSE2 MASKMOVDQU (and the upcoming AVX VMASKMOVDQU) instruction sele...
How to limit setAccessible to only “legitimate” uses?
... direct bytecode manipulation). They could run your code in their own JVM, etc. In this case worrying will do you no good.
If you're writing a web-application that only interfaces with people and systems via HTTP and you control the application server, it's also not a concern. Sure the fellow coder...
How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
...ill search for a fonction to handle ++t ; or t++ ; code:
class T
{
// etc.
} ;
T & operator++(T & p_oRight) // ++A
{
// Do increment of p_oRight value
return p_oRight ;
}
T operator++(T & p_oRight, int) // A++
{
T oCopy ;
// Copy p_oRight into oCopy
// Do increment...
C# Events and Thread Safety
...to compare this with the cost of repainting parts of a screen in Winforms, etc., so it becomes even more invisible in the deluge of real CPU work and waiting around for resources. You get +1 from me for the hard work, anyway. :)
– Daniel Earwicker
May 11 '09 at...
JOIN queries vs multiple queries
...ow table. Basically looked like:
$id = mt_rand(1, 50000);
$row = $db->fetchOne("SELECT * FROM table1 WHERE id = " . $id);
$row = $db->fetchOne("SELECT * FROM table2 WHERE other_id = " . $row['other_id']);
vs
$id = mt_rand(1, 50000);
$db->fetchOne("SELECT table1.*, table2.*
FROM tabl...
What is the most efficient Java Collections library? [closed]
...lar collections (with helpers like the Lists class) and then use Iterables etc when I need to. Use the complexity only when it helps you.
– Jon Skeet
Mar 10 '09 at 12:30
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Why Large Object Heap and why do we care?
...sn't just make memory usage more efficient (no unused holes), it makes the CPU cache much more efficient. The cache is a really big deal on modern processors, they are an easy order of magnitude faster than the memory bus.
Compacting is done simply by copying bytes. That however takes time. The ...