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What is the performance cost of having a virtual method in a C++ class?
... just a single cycle), but that the indirect jump usually cannot be branch-predicted. This can cause a large pipeline bubble as the processor cannot fetch any instructions until the indirect jump (the call through the function pointer) has retired and a new instruction pointer computed. So, the cost...
Best ways to teach a beginner to program? [closed]
...ard(length)
right(90)
>>>
>>> #HAVE STUDENTS PREDICT WHAT THIS WILL DRAW
>>> for i in range(50):
up()
left(90)
forward(25)
square(i)
>>>
>>> #NOW HAVE THE STUDENTS WRITE CODE TO DRAW
>>> #A SQUARE 'TUNN...
Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
...ou put your dlls in your exe dir (where they will be found). If you cannot predict the exe dir (e.g. some other exe is going to call your dll), you may have to put your dll dir into the search path (avoid this if at all poss!)
system32 and syswow64 are for Windows provided files... not for anyone e...
How should I call 3 functions in order to execute them one after the other?
...but they will all execute roughly at the same time. You can't consistently predict which one will finish first: the one that happens to take the shortest amount of time to execute will finish first.
But sometimes, you want functions that are asynchronous to execute in order, and sometimes you want ...
Android accelerometer accuracy (Inertial navigation)
...ssentially end up with a map of everywhere anyone has been and use it as a prediction model.
I wouldn't be surprised if you could determine what seat a person took in a theater using this method. Given enough users going to the theater, and enough resolution, you would have data mapping each row of...
Creating a copy of an object in C# [duplicate]
...tate is "Because callers of Clone cannot depend on the method performing a predictable cloning operation, we recommend that ICloneable not be implemented in public APIs."
– MetalGeorge
Mar 7 '18 at 20:01
...
Multithreading: What is the point of more threads than cores?
... cost of creating, pausing, and resuming threads.
This is also why branch prediction is important. If you have an if statement that requires loading a value from RAM but the body of the if and else statements use values already loaded into registers, the processor may execute one or both branches b...
How to check command line parameter in “.bat” file?
...otes are not stripped automatically.
And argq? How does it react to that? Predictably:
D:\>argq bla2" "bla3
"bla3"=="" was unexpected at this time.
So - think before you say: "Know what? Just use quotes. [Because, to me, this looks nicer]".
Edit
Recently, there were comments about this answ...
C++ performance vs. Java/C#
...
@Bill I may be mixing two things... but isn't branch prediction done at run time in the instruction pipeline achieve similar goals independent of the language?
– Hardy
Sep 8 '10 at 9:00
...
Easy idiomatic way to define Ordering for a simple case class
...ve a list of simple scala case class instances and I want to print them in predictable, lexicographical order using list.sorted , but receive "No implicit Ordering defined for ...".
...