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When is memoization automatic in GHC Haskell?
...
er, that should be map (show . f . read), of course. And now that I've downloaded GHC 6.12.3, I see the same results as in GHC 6.12.1. And yes, you are right about the original m1 and m2: versions of GHC that perform this kind of lifting with optimizations enabled will transform m...
Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?
...ype(8), .rest:nth-of-type(9), .rest:nth-of-type(10){
display:none;
}
Now you must be wondering what is the difference between nth-child and nth-of-type so this is the difference
Suppose the html is
<div class="one">...</div>
<div class="two">...</div>
<div class="...
What is the best way to solve an Objective-C namespace collision?
...er classes in that first framework which reference the renamed class would now reference the class from the other framework.
You wouldn't need to copy or rename a class if there were a way to copy the data pointed to by an IMP. You could create a new class and then copy over ivars, methods, propert...
REST authentication and exposing the API key
...i, apikey + sign will be transfered to serverside to make sure the server know who is making the request, the apisecret will never be transfered to the serverside for security.
– James.Xu
Mar 30 '11 at 1:27
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How and where are Annotations used in Java?
... the element and clarify its meaning.
Prior to JDK5, information that is now expressed with annotations needed to be stored somewhere else, and XML files were frequently used. But it is more convenient to use annotations because they will belong to the Java code itself, and are hence much easier t...
How do I set up DNS for an apex domain (no www) pointing to a Heroku app?
...h custom solutions that allow CNAME-like behavior on the zone apex. To my knowledge, we have DNSimple's ALIAS record and DNS Made Easy's ANAME record; both behave similarly.
Using those, you could setup your records as (using zonefile notation, even tho you'll probably do this on their web user int...
Escape double quotes in parameter
...performed by the executable being invoked instead of the shell. You never know which convention, if any, the invoked executable honours.
– binki
Mar 28 '14 at 2:15
7
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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...
stringstream, string, and char* conversion confusion
...str();
}
IMO that's the best solution. Unfortunately it's not very well known.
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C# vs C - Big performance difference
...employ some expert level optimization. 99% of programmers don't have the knowledge to use such optimization techniques just to get their code to run slightly faster than the c# code. Use cases for for c/c++ are narrowing.
– user2074102
Aug 23 '16 at 16:11
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