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parseInt vs unary plus, when to use which?
...arseInt beats unary plus on iOS :) This is helpful for web apps with heavy CPU consumption only. As a rule-of-thumb I'd suggest JS opt-guys to consider any JS operator over another one from the mobile performance point of view nowadays.
So, go mobile-first ;)
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How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
...erformance difference. If the object you are returning doesn't fit into a CPU register, then you are doing an expensive copy operation. This is fine if you need to use the pre-incremented value, but if you don't, postfix is much better. An example would be an iterator where you typically use: for...
What is the JavaScript convention for no operation?
...rs seem to do nothing to execute the noop defined this way (and hence save CPU cycles), there might be some performance issues associated with this (as is also mentioned by others in comments or in other answers).
However, that being said, you can easily define your own noop function and, infact, m...
Should I instantiate instance variables on declaration or in the constructor?
...ow it was him). Personal taste is personal taste; ultimately, neither the CPU nor the JRE care about syntactical style.
– Aquarelle
Sep 20 '13 at 22:38
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How does Duff's device work?
... whether the loop is finished and jumping back to the top of the loop. The CPU can run faster when it's executing straight-line code instead of jumping.
The second aspect is the switch statement. It allows the code to jump into the middle of the loop the first time through. The surprising part to m...
Difference between API and ABI
...system. The ABI defines the API plus the machine language for a particular CPU family. An API does not ensure runtime compatibility, but an ABI does, because it defines the machine language, or runtime, format.
Courtesy
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How does akka compare to Erlang? [closed]
...rlang VM can pause the process and let other hungry processes to take more CPU cycles. That's a very important feature that JVM doesnot provide.
– Daniel
Jun 4 '15 at 2:57
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When should I use Lazy?
... I believe the main trade-off is between memory usage (lazy) and cpu usage (not-lazy). Because lazy has to do some extra book-keeping, InitLazy would use more memory than the other solutions. It also might have a minor performance hit on each access, while it checks whether it already has ...
How do I declare a 2d array in C++ using new?
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array[ index( x, y )]
Sad, I know. But you'll get used to it. And your CPU will thank you.
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private final static attribute vs private final attribute
... class? Let's say for the calculator device with limited ram but plenty of CPU resources.
– Win Myo Htet
Jun 14 '13 at 21:29
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