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What is a memory fence?
...tion? (I am not alpha user, but asking about the effect of very reordering vs restricted reordering). So what are the downsides of lot reordering (except of risk of undefined behaviour , but I would guess, most modern CPUs should have resolved good reordering and have implemented only defined reord...
Purpose of ESI & EDI registers?
...rparts, if you didn't learn ASM in 1985). Among these are
REP STOSB
REP MOVSB
REP SCASB
Which are, respectively, operations for repeated (= mass) storing, loading and scanning. What you do is you set up SI and/or DI to point at one or both operands, perhaps put a count in CX and then let 'er rip....
Static variables in JavaScript
...ry faster than in the class in Firefox. jsperf.com/static-counter-in-class-vs-in-closure
– Sony Santos
Dec 9 '14 at 11:19
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How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
...
This code also shows the prefix vs. postfix performance 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'...
What is the JavaScript convention for no operation?
...browsers except IE (there is a babel transform if you must):
()=>{} vs. Function.Prototype
()=>{} is 87% faster than Function.prototype in Chrome 67.
()=>{} is 25% faster than Function.prototype in Firefox 60.
()=>{} is 85% faster than Function.prototype in Edge (6/15/2018).
()=>...
Why does Clojure have “keywords” in addition to “symbols”?
...eys in hashmaps etc as they don't change once evaluated: (eval (eval ':a)) vs (eval (eval ''a)). Are there other advantages? Performance wise, they are identical?
– kristianlm
Aug 3 '12 at 19:56
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What's the difference between libev and libevent?
...or libevent), allowing extra event types such as timers based on wallclock vs. monotonic time, inter-thread interruptions, prepare and check watchers to embed other event loops or to be embedded and so on.
The extra component problem is "solved" by not having them at all, so libev can be small and ...
Javascript reduce on array of objects
...etter Type Inference
--When using a tool like Typescript or an editor like VS Code, you get the benefit of telling the compiler the initial and it can catch errors if you're doing it wrong. If you don't set the initial value, in many situations it might not be able to guess and you could end up with...
What is the Invariant Culture?
...)
as for an example - https://msdn.microsoft.com/en-us/library/4c5zdc6a(v=vs.100).aspx. When you write out an app-specific file which the user shouldn't be messing around with, you should use InvariantCulture for all methods that take in a culture parameter.
Note that per the docs linked above:
...
“Debug only” code that should run only when “turned on”
...g in a release build. As the variable exists solely to be toggled from the VS execution host, and in a release build its value doesn't matter, it's pretty harmless.
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