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What is the purpose of a stack? Why do we need it?
...udolph That hasn't been true for almost two decades now. Just because most C++ compilers still target 90s x86 instruction set doesn't mean that x86 itself is defficient. Haswell has 168 general purpose integer registers and 168 GP AVX registers, for example - far more than any ARM CPU I know of. You...
How do you do a deep copy of an object in .NET? [duplicate]
...e of, which is probably quite close to the speed of the same thing in C or C++ (but would have to run some equivalent benchmarks to check this claim).
Demo of shallow and deep copy, using classes and MemberwiseClone:
Create Bob
Bob.Age=30, Bob.Purchase.Description=Lamborghini
...
Is multiplication and division using shift operators in C actually faster?
...urce code vs implementation
More generally, your question is tagged C and C++. As 3rd generation languages, they're specifically designed to hide the details of the underlying CPU instruction set. To satisfy their language Standards, they must support multiplication and shifting operations (and m...
What is the dependency inversion principle and why is it important?
...re pertinent to the language in view when the principle was codified (i.e. C++) which aren't relevant to newer languages. That said, the importance of the Dependency Inversion Principle primarily lies with the development of reusable software components/libraries.
A longer discussion of this princ...
Generic method multiple (OR) type constraint
...constraints and generics themselves are pretty primitive compared to, say, C++ templates. C# requires you to tell the compiler in advance what operations are allowed on generic types. The way to provide that info is to add an implements interface constraint (where T : IDisposable). But you may not w...
How do function pointers in C work?
...u have brokenly implemented is Javascript-style prototype-based OO. To get C++/Pascal-style OO, you'd need to: 1. Have a const struct for a virtual table of each class with virtual members. 2. Have pointer to that struct in polymorphic objects. 3. Call virtual methods via the virtual table, and all ...
Which iomanip manipulators are 'sticky'?
...
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Multiple INSERT statements vs. single INSERT with multiple VALUES
... similar situation trying to convert a table with several 100k rows with a C++ program (MFC/ODBC).
Since this operation took a very long time, I figured bundling multiple inserts into one (up to 1000 due to MSSQL limitations). My guess that a lot of single insert statements would create an overhead...
Learning assembly [closed]
...ybe being able to write more efficient parts of code (for example, through c++), doing somethings like code caves, etc. I saw there are a zillion different flavors of assembly, so, for the purposes I mention, how should I start? What kind of assembly should I learn? I want to learn by first doing so...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...t Lookup, describes how unqualified names are looked up by the compiler in C++.
The C++11 standard § 3.4.2/1 states:
When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqualified lookup (3.4.1) may be searched, and in ...