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What is the reason for having '//' in Python? [duplicate]
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edited Oct 8 '09 at 4:29
answered Oct 8 '09 at 4:17
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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...
Setting element of array from Twig
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edited Feb 24 '12 at 14:54
answered Feb 24 '12 at 14:43
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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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Syntax behind sorted(key=lambda: …)
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edited Oct 24 '14 at 14:06
Gaurang Tandon
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Python “SyntaxError: Non-ASCII character '\xe2' in file”
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147
You've got a stray byte floating around. You can find it by running
with open("x.py") as fp:
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Is it better to call ToList() or ToArray() in LINQ queries?
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answered May 1 '13 at 17:42
JaredParJaredPar
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How can I remove specific rules from iptables?
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Execute the same commands but replace the "-A" with "-D". For example:
iptables -A ...
beco...
NOT IN vs NOT EXISTS
...ley. In the example there the number of logical reads increase from around 400 to 500,000.
Additionally the fact that a single NULL can reduce the row count to zero makes cardinality estimation very difficult. If SQL Server assumes that this will happen but in fact there were no NULL rows in the da...
Fast ceiling of an integer division in C / C++
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For positive numbers
unsigned int x, y, q;
To round up ...
q = (x + y - 1) / y;
or (avoi...