What is the difference between new/delete and malloc/free?

What is the difference between new/delete and malloc/free?

What is the difference between new/delete and malloc/free?Related (duplicate?): In what cases do I use malloc vs new? 1:new/deleteAllocate/release memoryMemory allocated from 'Free Store'Returns a fully typed pointer.new (standard versio

calling non-static method in static method in Java [duplicate]

calling non-static method in static method in Java [duplicate]

This question already has an answer here: Cannot make a static reference to the non-static method 8 answers I'm getting an error when I try to call a n

What is the difference between '@' and '=' in directive scope in AngularJS?

What is the difference between '@' and '=' in directive scope in AngularJS?

I've read the AngularJS documentation on the topic carefully, and then fiddled around with a directive. Here's the fiddle.And here are some relevant snippets:From the HTML:{{text}}From the pan

Is segmentation fault actual undefined behavior when we refer to a non-static data-member

Is segmentation fault actual undefined behavior when we refer to a non-static data-member

I had read the following rule and I've been trying to write an example, which reflects one.The rule is from 3.8/5 N3797: Before the lifetime of an object has started but after the storage which the object will occupy has been allocated or

Why is Java Vector class considered obsolete or deprecated?

Why is Java Vector class considered obsolete or deprecated?

Why is Java Vector considered a legacy class, obsolete or deprecated?Isn't its use valid when working with concurrency?And if I don't want to manually synchronize objects and just want to use a thread-safe collection without needing to make

Using std::unique_ptr for Windows HANDLEs

Using std::unique_ptr for Windows HANDLEs

I am attempting to use std::unique_ptrs to manage Windows HANDLEs in an exception-safe manner.First I tried:struct HandleDeleter{ void operator()( HANDLE handle ) { if( handle ) { FindVolumeClose( handle )

How to find out which .c file contains the .c functions of R internals, on Windows?

How to find out which .c file contains the .c functions of R internals, on Windows?

I want to view the source code of R's match.call function. As it is an internal function, I downloaded the R source code, went to ./src/main/names.c and looked for match.call there. Thus, I found out that the corresponding .c function is ca

Can 'iterator' type just subclass 'const_iterator'?

Can 'iterator' type just subclass 'const_iterator'?

After another question about iterators I'm having some doubts about custom containers. In my container, iterator is a subclass of const_iterator, so that I get conversion from non-const to const "for free". But is this allowed or are ther

~= operator in Swift

~= operator in Swift

I recently downloaded the Advanced NSOperations sample app from Apple and found this code...// Operators to use in the switch statement.private func ~=(lhs: (String, Int, String?), rhs: (String, Int, String?)) -> Bool { return lhs.0 ~= r

Can an XOR linked list be implemented in C++ without causing undefined behavior?

Can an XOR linked list be implemented in C++ without causing undefined behavior?

An XOR linked list is a modified version of a normal doubly-linked list in which each node stores just one "pointer" instead of two. That "pointer" is composed of the XOR of the next and previous pointers. To traverse the list, two pointe

What is the status of ranges in C++?

What is the status of ranges in C++?

Sometimes I get tired of all this my_vector.begin(), my_vector.end() noise. Last year at boostcon, Andrei Alexandrescu's keynote speech was titled Iterators Must Go (video)Is there any progress on introducing ranges into C++, so I can final

How do you handle strings in C++?

How do you handle strings in C++?

Which is your favorite way to go with strings in C++? A C-style array of chars? Or wchar_t? CString, std::basic_string, std::string, BSTR or CComBSTR?Certainly each of these has its own area of application, but anyway, which is your favorit

how should i store a price in mongoose?

how should i store a price in mongoose?

I'm using mongoose schemas for node.js along with express-validator (which has node-validator santiziations and validators).What's a good way to store price for an item?I currently have var ItemSchema = new Schema({ name : { t

What does “a” stand for in font: 0/0 a;

What does “a” stand for in font: 0/0 a;

I was referring a video tutorial where the designer used font: 0/0 a; for image replacement, so I get that 0 is the font-size, another 0 is the line-height but designer skips the a part just by saying that's an hack.So what does that a exac

Why are generic and non-generic structs treated differently when building expression that lifts oper

Why are generic and non-generic structs treated differently when building expression that lifts oper

This looks like a bug in lifting to null of operands on generic structs.Consider the following dummy struct, that overrides operator==:struct MyStruct{ private readonly int _value; public MyStruct(int val) { this._value = val; } pu

Get first element from a dictionary

Get first element from a dictionary

I have the following declaration:Dictionary> like = new Dictionary>();I need to get the first element out, but do not know the key or value. What's the best way to do this? 1:Edit To satisfy the commenters.Note that to call First here is

What's a good PHP Active Record library? [closed]

What's a good PHP Active Record library? [closed]

I've been using CodeIgniter for some quite time, and I've been extremely happy with its Active Record stuff. It's great to query the database with it.Recently I've started a new project and I can't use such a framework anymore.Is there a si

Declarations in extensions cannot override yet error in Swift 4

Declarations in extensions cannot override yet error in Swift 4

I have an extension:public extension UIWindow { override public func topMostController()->UIViewController? { ... }}but for my topMostController I get the next error:Declarations in extensions cannot override yet errorIt works well for S

How are denormalized floats handled in C#?

How are denormalized floats handled in C#?

Just read this fascinating article about the 20x-200x slowdowns you can get on Intel CPUs with denormalized floats (floating point numbers very close to 0).There is an option with SSE to round these off to 0, restoring performance when such

How can I connect to a Microsoft Dynamics CRM server using Python?

How can I connect to a Microsoft Dynamics CRM server using Python?

The Microsoft Dynamics CRM service uses NTLM authentication, which makes connecting to it from a python process using suds somewhat complicated. I'm looking for a code sample that will:Send and receive the response from a RetrieveAttributeR

iOS equivalent to Android Service?

iOS equivalent to Android Service?

So with iOS 7 supporting a broader background mode, is it possible to finally have an equivalent to Android Service on iOS?What I am after is essentially running app A in the background and have one or more apps B and C talk to that app (wi

Allowing access to private members

Allowing access to private members

This question is somewhat a continuation of this one I've posted.What I was trying to do: my point was to allow access to private members of a base class A in a derived class B, with the following restraints:what I want to access is a struc

Embedding XULRunner application on Java

Embedding XULRunner application on Java

My goal is to get Limewire(JAVA) and Songbird(XULRunner) to run together.I was thinking the best way is to run the XUL application(songbird) inside a JAVA swing panel. Is there another way?Would it be better or possible to have the GUI enti

Upload file using PUT verb in ASP.Net Web Api 2

Upload file using PUT verb in ASP.Net Web Api 2

I would like to expose an ASP.Net Web Api 2 action using the HTTP PUT verb to upload files. This is coherent with our REST model as the API represents a remote file system (similar to WebDAV, but really simplified), so the client chooses th

Is C# 4.0 compile-time turing complete?

Is C# 4.0 compile-time turing complete?

There is a well-known fact that C++ templates are turing-complete, CSS is turing-complete (!) and that the C# overload resolution is NP-hard (even without generics).But is C# 4.0 (with co/contravariance, generics etc) compile-time turing co