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Why were pandas merges in python faster than data.table merges in R in 2012?
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120
It looks like Wes may have discovered a known issue in data.table when the number of unique stri...
xUnit : Assert two List are equal?
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edited May 29 '18 at 15:20
answered Jan 7 '09 at 9:33
Kons...
Is it better to use std::memcpy() or std::copy() in terms to performance?
... 5 strings using all four SHA-2 versions (224, 256, 384, 512), and I loop 300 times. I measure times using Boost.timer. That 300 loop counter is enough to completely stabilize my results. I ran the test 5 times each, alternating between the memcpy version and the std::copy version. My code takes adv...
How to convert CharSequence to String?
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answered Oct 10 '11 at 0:38
Mike SamuelMike Samuel
106k2626 gold badges195195 silver badges228228 bronze badges
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What is the use of the ArraySegment class?
... array, get the first item, and so on:
var array = new byte[] { 5, 8, 9, 20, 70, 44, 2, 4 };
array.Dump();
var segment = new ArraySegment<byte>(array, 2, 3);
segment.Dump(); // output: 9, 20, 70
segment.Reverse().Dump(); // output 70, 20, 9
segment.Any(s => s == 99).Dump(); // output false...
ASP.NET MVC 3 Razor: Include JavaScript file in the head tag
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answered Nov 30 '10 at 8:39
RPM1984RPM1984
68.4k5252 gold badges210210 silver badges323323 bronze badges
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How can I insert values into a table, using a subquery with more than one result?
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150
You want:
insert into prices (group, id, price)
select
7, articleId, 1.50
from article whe...
Is git not case sensitive?
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answered Dec 12 '11 at 22:06
Adam DymitrukAdam Dymitruk
104k1717 gold badges133133 silver badges136136 bronze badges
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Xcode Find and replace in all project files
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answered Dec 25 '13 at 20:41
SouleimanSouleiman
2,89522 gold badges1717 silver badges2121 bronze badges
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invalid command code ., despite escaping periods, using sed
...ving '' as argument to -i:
find ./ -type f -exec sed -i '' -e "s/192.168.20.1/new.domain.com/" {} \;
See this.
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