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Is multiplication and division using shift operators in C actually faster?
...apable. 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/machine code sequence is. It's even possible that the processor itself has implemented the multiply instruction as a sequence of shifts & adds in mi...
How do I determine whether my calculation of pi is accurate?
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1632
Since I'm the current world record holder for the most digits of pi, I'll add my two cents:
Unl...
Convert Rows to columns using 'Pivot' in SQL Server
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If you are using SQL Server 2005+, then you can use the PIVOT function to transform the data from rows into columns.
It sounds like you will need to use dynamic sql if the weeks are unknown but it is easier to see the correct code using a hard-coded ve...
What represents a double in sql server?
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392
float
Or if you want to go old-school:
real
You can also use float(53), but it means the sa...
Is there a Null OutputStream in Java?
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25
Since Java 11, there is a static utility that does exactly what you need, a static factory meth...
Difference between left join and right join in SQL Server [duplicate]
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Select * from Table1 left join Table2 ...
and
Select * from Table2 right join Table1 ...
are indeed completely interchangeable. Try however Table2 left join Table1 (or its identical pair, Table1 right join Table2) to see a difference. This query should giv...
jQuery find events handlers registered with an object
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gnarf
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answered Mar 25 '10 at 18:50
jpsjps
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Looking for ALT+LeftArrowKey solution in zsh
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248
Run cat then press keys to see the codes your shortcut send.
(Press Ctrl+C to kill the cat whe...
Accessing the logged-in user in a template
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229
You can access user data directly in the twig template without requesting anything in the cont...
Easiest way to copy a single file from host to Vagrant guest?
...oad a file from the host machine to the guest machine.
Vagrant.configure("2") do |config|
# ... other configuration
config.vm.provision "file", source: "~/.gitconfig", destination: ".gitconfig"
end
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