new-operator

Layers within a layer in Caffe

由 ￡可爱￡侵袭症＋ 提交于 2019-12-08 07:53:15
问题 I have a custom loss layer which I wrote, this layer applies softmax and sigmoid activation to part of the bottom[0] blob. Ex: `bottom[0]` is of shape (say): `[20, 7, 7, 50]` (`NHWC` format) I would like to apply `softmax` to `[20, 7, 7, 25]` (first 25 channels) and `sigmoid` to `[20, 7, 7, 1]` (just one channel) and the remaining 24 channels are taken in as it is. How do I effectively allocate memory to the input blobs of these two softmax and sigmoid layers and also free this memory ? 回答1:

How to replace 'malloc' and 'free' with 'new' and 'delete'?

由 若如初见. 提交于 2019-12-08 06:16:56
问题 How can I change the following code such that I can use new and delete instead of malloc and free ? #include <iostream> #include <cstdlib> #include <cstdio> using namespace std; class myclass{ private: float **m_R; public: myclass(); ~myclass(); float **getR(void); void setR(void); }; myclass::myclass() { // first allocate rows (for pointers) m_R = (float**)malloc(3*sizeof(float)); // next allocate columns for float values for(int i=0;i<3;i++) *(m_R+i) = (float*)malloc(3*sizeof(float)); }

Why and how the new keyword is being used with the already existing object of a class?

由 别说谁变了你拦得住时间么 提交于 2019-12-08 05:06:36
问题 I'm using PHP 7.1.11 Consider below code : <?php class Test { static public function getNew() { return new static; } } class Child extends Test {} $obj1 = new Test(); $obj2 = new $obj1; ?> Above code snippet has been taken from the PHP Manual . From the above code I'm not able to understand why and how the new keyword is being used with the existing object of a class Test ? What's the intention behind doing like this? Is this kind of usage of new keyword recommended? If you really want to

How to create new File txt by using Adobe Air

由 雨燕双飞 提交于 2019-12-08 04:57:08
问题 I want to ask how to create new file with adobe air so i can write it..... And how to put it in our current project? I have seen so many resource, but they used existed file that created manually and only update it content... Thanks Alot 回答1: everything is explained (with sample code) in the documentation: flash.filesystem.FileStream flash.filesystem.File Reading and writing files (Adobe AIR 1.0 and later) 回答2: private var fileReferenceSave:FileReference= new FileReference(); private function

Why is new called an operator in Java?

由 匆匆过客 提交于 2019-12-08 02:48:10
问题 Why is new keyword called an operator in Java? I know that new dynamically allocates memory in Java for an object and returns a reference to it but why is it called an operator? 回答1: Actually, the Java Language Specification does not call new an operator. It writes: 38 tokens, formed from ASCII characters, are the operators. Operator: = > < ! ~ ? : -> == >= <= != && || ++ -- + - * / & | ^ % << >> >>> += -= *= /= &= |= ^= %= <<= >>= >>>= new is simply a keyword that occurs in a class instance

How to replace 'malloc' and 'free' with 'new' and 'delete'?

由 北战南征 提交于 2019-12-08 01:17:25
How can I change the following code such that I can use new and delete instead of malloc and free ? #include <iostream> #include <cstdlib> #include <cstdio> using namespace std; class myclass{ private: float **m_R; public: myclass(); ~myclass(); float **getR(void); void setR(void); }; myclass::myclass() { // first allocate rows (for pointers) m_R = (float**)malloc(3*sizeof(float)); // next allocate columns for float values for(int i=0;i<3;i++) *(m_R+i) = (float*)malloc(3*sizeof(float)); } myclass::~myclass() { // first free memory allocated by columns for(int i = 0; i < 3; i++) { free(m_R[i]);

Why does the object created without using “new” operator gets the same address

由 南笙酒味 提交于 2019-12-07 18:36:38
问题 Going through this question, one answer said the object created are destroyed outside their scope, To get this concept clearly I wrote the following code: #include <iostream> using namespace std; struct Node{ int val; Node *next; Node(int x) : val(x) , next(NULL){} }; int main(){ for(int i=0;i<10;i++){ int someval = rand()%100; Node somenode = Node(someval); printf("Address for object %d is %p \n",i+1, &somenode); } } I got the following output: Address for object 1 is 0x7ffc32ff26b0 Address

C++ array creation problem specific to gcc 4.5

由 前提是你 提交于 2019-12-07 13:33:49
问题 The following code works under gcc versions 2.9 through 4.4 but not version 4.5: struct Pass { }; int main(void){ Pass **passes = new ( Pass (*[ 10 ]) ); } The specific error message with gcc 4.5 is: prob.cc: In function ‘int main()’: prob.cc:6:31: warning: lambda expressions only available with -std=c++0x or -std=gnu++0x prob.cc:6:38: error: no matching function for call to ‘Pass::Pass(void (&)())’ prob.cc:2:1: note: candidates are: Pass::Pass() prob.cc:2:1: note: Pass::Pass(const Pass&)

Regarding placement new in C++

由 旧时模样 提交于 2019-12-07 13:27:43
I am having a problem with the placement new operator. I have two programs: Program1 (operator.cpp) and Program2 (main.cpp): Program1: operator.cpp void *operator new(size_t size) { void *p; cout << "From normal new" << endl; p=malloc(size); return p; } void *operator new(size_t size, int *p) throw() { cout << "From placement new" << endl; return p; } Here is the second program to which the first is linked: main.cpp: #include <new> int main() { int *ptr=new int; int *ptr1=new(ptr) int(10); } I am individually compiling operator.cpp and main.cpp as shown: operator.cpp: g++ -g -c -o operator

Firefox window.opener issue

由 我是研究僧i 提交于 2019-12-07 13:15:45
问题 "window.opener" works fine in both IE and Firefox as long as 'Open in New Tab' is used from the right-click menu; Error console says "window.opener" is null. Is there any other way the opener can be accessed? Edit: Error console says "window.opener" is null only when "Open in New Tab" is clicked. For all other cases, there is no such error. Hence, what i would like to know is if an alternate other than "window.opener" exists. 回答1: window.opener only works if the window (or tab, if it was
订阅 new-operator