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“Undefined reference to” template class constructor [duplicate]
...cases. The choice is yours.
The code in a template is merely a 'pattern' known to the compiler. The compiler won't compile the constructors cola<float>::cola(...) and cola<string>::cola(...) until it is forced to do so. And we must ensure that this compilation happens for the constructo...
How to find the kth smallest element in the union of two sorted arrays?
...uch i and j so that a[i-1] < b[j-1] < a[i] (or the other way round). Now since there are i elements in 'a' smaller than b[j-1], and j-1 elements in 'b' smaller than b[j-1], b[j-1] is the i + j-1 + 1 = kth smallest element. To find such i,j the algorithm does a dichotomic search on the arrays. ...
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
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At least you have to know where env is :).
– ᐅdevrimbaris
Mar 22 '16 at 8:50
1
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Is multiplication and division using shift operators in C actually faster?
...wer: Not likely.
Long answer:
Your compiler has an optimizer in it that knows how to multiply as quickly as your target processor architecture is capable. Your best bet is to tell the compiler your intent clearly (i.e. i*2 rather than i << 1) and let it decide what the fastest assembly/mach...
What is the difference between .*? and .* regular expressions?
...come to this:
eeeAiiZuuuuAoooZeeee
\__________/
A.* matched, Z can now match
Now Z can match, so the overall pattern matches:
eeeAiiZuuuuAoooZeeee
\___________/
A.*Z matched
By contrast, the reluctant repetition in A.*?Z first matches as few . as possible, and then taking more . ...
git + LaTeX workflow
...ized part of your work, and it is also easier for version control, as you know what changes have been made to each chapter, instead of having to figure it out from the logs of one big file.
Using Git efficiently:
Use branches!. There is perhaps no better advice I can give. I've found branches to ...
INNER JOIN vs LEFT JOIN performance in SQL Server
... LEFT JOIN because the performance of LEFT JOIN is better, despite what I know. After I changed it, the speed of query got significantly improved.
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What is hashCode used for? Is it unique?
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The quote from the MSDN is now out-of-date. The MSDN is now not as explicit about the hash code not being unique.
– user34660
Dec 26 '17 at 22:11
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Differences between Perl and PHP [closed]
I'm planning to learn Perl 5 and as I have only used PHP until now, I wanted to know a bit about how the languages differ from each other.
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How to stop and restart memcached server?
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Note that services is now considered an external tool to brew. apple.stackexchange.com/questions/150300/…
– Kirby
May 6 '15 at 21:54
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