qpp | Modern C++ quantum
kandi X-RAY | qpp Summary
kandi X-RAY | qpp Summary
Quantum++ is a modern C++ general purpose quantum computing library, composed solely of template header files. Quantum++ is written in standard C++17 and has very low external dependencies, using only the Eigen 3 linear algebra header-only template library and, if available, the OpenMP multi-processing library. Quantum++ is not restricted to qubit systems or specific quantum information processing tasks, being capable of simulating arbitrary quantum processes. The main design factors taken in consideration were the ease of use, high portability, and high performance. The library's simulation capabilities are only restricted by the amount of available physical memory. On a typical machine (Intel i5 8Gb RAM) Quantum++ can successfully simulate the evolution of 25 qubits in a pure state or of 12 qubits in a mixed state reasonably fast. To report any bugs or ask for additional features/enhancements, please submit an issue with an appropriate label. If you are interested in contributing to this project, feel free to contact us. Alternatively, fork the repository, create a custom branch, add your contribution, then finally create a pull request. If we accept the pull request, we will merge your custom branch with the latest main/development branch. The latter will eventually be merged into a future release version. To contribute, it is preferable to have a solid knowledge of modern C++ (preferably C++17 or later), including templates and the standard library, a basic knowledge of quantum computing and linear algebra, and working experience with Eigen 3. For additional Eigen 3 documentation see For a simple Eigen 3 quick ASCII reference see Copyright (c) 2013 - 2022 softwareQ Inc. All rights reserved.
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QUESTION
How it is possible to use arbitrary sql query (I mean native sql query) in some repository? My actual problem is this:
...ANSWER
Answered 2020-Mar-13 at 13:09Question is quite broad and touches couple of aspects:
- custom JPA repository method using
@Query - selecting results in your
@Query - mapping
@Queryresults to an interface - exposing new repository method through
@RepositoryRestResource
TLDR: wrote an example of what is talked about with couple of basic tests https://github.com/ivarprudnikov/test-spring-jpa-repository-query-exposed-through-http
custom JPA repository method using@Query
As you have mentioned it is quite straightforward, just annotate a method with @Query and make sure your return type corresponds to what is being returned from the query, eg:
QUESTION
I have problem regarding if my hover cursor not in the element the color back to white. is there way to make the nav links color remain if the hover cursor not in the hover elements? I will show you guys my output image that I have today. currently I use bootstrap for my navbar.
Cursor not in the element
I want to make the target output look like this.
I will share to you guys my fiddle files for more details.
...ANSWER
Answered 2019-Aug-06 at 15:33Try this selector instead:
QUESTION
I have problem customizing the dropdown menu of bootstrap, is there way to achieve when i hover the nav-item the nav item will automatically set a background color of white. to give more details I want to achieve this dropdown concept.
This is the sample image that I want to achieve on my dropdown.
So currently I already create a navbar but I don't know how can i achieve that setting background-color to the navlink of bootstrap 4.
I will share to you guys my sample code that I made.
...ANSWER
Answered 2019-Aug-05 at 16:23You can add a :hover selector to the item you want with a background-color attribute. You also need to move around some of the padding-right:50px from the tags and change them to margin-right:50px on the parent element. You can remove the min-height:56px from the .navbar element since the `.nav-items are centered vertically otherwise there will be a gap.
QUESTION
I want to call third-party API (to upload an image) on the node side that expects a File type object on key file.
The front end is in Angular so the flow is
.ts
...ANSWER
Answered 2019-Feb-28 at 10:28This is how I have handled this at the facade layer, instead of this
QUESTION
I have a project that I'm able to compile without issues on Ubuntu. The Makefile at https://github.com/avalon-lang/avaloni/blob/master/Makefile is the one I'm trying to adapt for Windows 10.
I have MingW-w64 installed and GNU Make-32.
When I run make against the Makefile, CFLAGS and other flags passed to the compiler are not shown leaving spaces in the echoed output instead of the compiler flags. Therefore, files required for a successful compilation are not found.
I tried to replace the variables CFLAGS, SYSINC and INC with their content but nothing changed. They are simply ignored as if make deleted them.
...ANSWER
Answered 2018-Dec-22 at 03:06The reason for this is that (a) you're using non-standard variables to hold your compiler flags, and (b) your pattern rule doesn't match.
Because of (b), make chooses the built-in rule for creating an object file and because of (a), none of your flags are used in the built-in rule.
The reason your pattern rule doesn't match is that GNU make doesn't support backslashes in pathnames. You must use forward slashes in all your rules:
QUESTION
I need implement a class QoreFoo in C++ and its dual implementation for Qore script Foo via .qpp. QoreFoo is abstract class providing general API and real functionality is to be added in descendand class (in C++ or Qore). The Foo API calls from core, i.e.C++, need to be propagated to instantiated objects regardless where descendant class is used.
QoreFoo.h
...ANSWER
Answered 2017-Feb-20 at 16:47If the API you want to enforce is a Qore-language class API, then you need to implement your abstract class in Qore and not in C++.
If you have a C++ virtual class hierarchy that should be extended in Qore, then you should use qpp to implement your Qore class in C++ and then allow programmers to extend it naturally by subclassing your classes in Qore.
You can do it like this:
QoreFoo.h
QUESTION
I want to create a dataframe inside the function that is a selection of columns in the dataframe d
...ANSWER
Answered 2017-Jan-18 at 00:58Your function is perfectly fine. There is issue with the way you are passing the argument. You are supposed to pass strings as variable names.
Try this QPP(dat=d,xvar = "area" ,yvar = "f.ecdf")
Now, this happens because if you notice df[,c("col_name")] the argument "col_name" is string
Regarding your question 2: This is how you can do it one step without using cbind
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