scattered | C Scattered Containers
kandi X-RAY | scattered Summary
kandi X-RAY | scattered Summary
Scattered container store each type's data member sequentially for all objects. That is, the first data member of all objects is stored contiguosly in memory, then the second data member, and so on as shown in the following figure:. This improves cache line utilization when iterating sequentially over a container without accessing all object's data members. They also allow asynchronous processing of object's data member without false sharing.
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QUESTION
ANSWER
Answered 2021-Jun-16 at 01:11The problem is that your CSS selectors include parentheses ()
and dollar signs $
. These symbols already have a special meaning. See:
You can escape these characters using a backslash \
.
QUESTION
I have a class Group
containing a vector of objects of another class Entry
. Inside the Group
I need to frequently access the elements of this vector(either consequently and in random order). The Entry
class can represent a data of two different types with the same properties(size, content, creation time etc.). So all of the members and methods of the Entry
class are the same for both data types, except for one method, that should behave differently depending on the type of the data. It looks like this:
ANSWER
Answered 2021-Jun-12 at 16:04is it worth it to make a class polymorphic just because of one only among many other of its method is needed to behave differently depending on the data type?
Runtime polymorphism starts to provide undeniable net value when the class hierarchy is deep, or may grow arbitrarily in future. So, if this code is just used in the private implementation of a small library you're writing, start with what's more efficient if you have real reason to care about efficiency (type_
and if
), then it's not much work to change it later anyway. If lots of client code may start to depend your choices here though, making it difficult to change later, and there's some prospect of further versions of someMethod()
being needed, it's probably better to start with the virtual dispatch approach.
Is there any better approach?
Again - what's "better" takes shape at scale and depends on how the code is depended upon, updated etc.. Other possible approaches include using a std::variant
, or even a std::any
object, function pointers....
QUESTION
I have a table containing students and their marks across subjects(multiple evaluations for same subject are there). I want to write a sql to output the result as per below requirement.
- Top 3 subjects should be picked for every student and pick 2 rows for every subject.
- Pick 3 subjects with highest marks, 2nd row has to be from the same subjects.
- There can be same marks in different subjects and same subject as well. Pick any if marks are same.
- Subject for a student may not be together and might be scattered across table, i have shown them together for the ease of visualization.
Table:
...ANSWER
Answered 2021-Jun-08 at 14:55If I understand correctly, you want the subjects with the three highest marks per student. And then you want the two highest marks in that subject. If so, I would suggest:
QUESTION
I have been working through an awesome tutorial within Udemy to learn more about Blazor (https://www.udemy.com/course/programming-in-blazor-aspnet-core/), but have hit a stumbling block that I'm not entirely sure what to do with.
Short Version
When upgrading to .Net 5 from .Net Standard 2.1, I end up with this error when trying to run this sample Blazor application as soon as it loads up (so it's not hitting any of my code): System.TypeLoadException: Could not resolve type with token 01000014 from typeref (expected class 'System.Threading.Tasks.Task' in assembly 'System.Runtime, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a')
I see a similar problem with this SO link, but it didn't really give me much to go off of.
Detailed Version
With prior versions of .Net, you installed the latest, then Visual Studio picked that up, you switched projects and away you went - everything was seamless and just worked. With some of the newer stuff though, Microsoft's messaging has been extremely confusing and the problem I'm hitting now is inside that Udemy tutorial I need to utilize the IJSObjectReference
interface to do something. When I first added that to the code, the type reference couldn't be resolved so a quick search pointed me to needing to move the project to .Net 5 by changing this:
ANSWER
Answered 2021-Jan-20 at 06:19Have you changed the header node in the *.csproj too?
QUESTION
I am trying to generate a visual studio 2019 C++ project from the tesseract 4.1.1 source code. Ultimately, I want to include a tesseract C++ project in my custom solution that consumes OCR results.
When I follow these steps:
- Download and extract tesseract code https://github.com/tesseract-ocr/tesseract/archive/refs/tags/4.1.1.zip to "C:\tesseract" directory.
- Execute the following commands in a Developer Command Prompt for VS 2019:
C:\Windows\System32>cd "C:\tesseract"
C:\tesseract>mkdir build
C:\tesseract>cd build
C:\tesseract\build>cmake ..
I receive this error:
...ANSWER
Answered 2021-Jun-05 at 07:13There are several tutorial how to build tesseract on windows with cmake and VS e.g. https://bucket401.blogspot.com/2021/03/building-tesserocr-on-ms-windows-64bit.html (you can ignore end of tutorial - python module), minimalist tesseract or with clang
QUESTION
In the below code, when plotting a beeswarm plot using a swarmplot function, I am observing that the data points are not getting scattered in data set 2. But if I change the data set to data set 1, the data points are getting scattered very well. I need that even with the data set 2, the points should be scattered very well. I have tried even by changing the scatter size but to no result. Can somebody help in figuring this out ??
...ANSWER
Answered 2021-Jun-06 at 14:51Get rid of the aspect=1
flag for axes
so that line reads
QUESTION
I am very new to Excel and macros.
I have a file with Employee data scattered over multiple worksheet in the same file. I want to search employee number in each of the sheets starting with sheet "Data Source 1" and copy all data in each row against employee ID to "Combined Data" sheet.
Next I want to search same employee ID in sheet "Data Source 2" and copy information if available to "Combined Sheet" in specified column, if information is not available search for same Employee ID in "Data Source 3" and copy data to combined sheet again in specified column only.
If it is not present then loop again start with search for new employee ID from "data source 1" sheet.
I am stuck and not able to understand how to move ahead.
Code currently being used:
...ANSWER
Answered 2021-May-26 at 17:51Please try the following code.
Also rectify your sheet name from 'Date Source 1' to 'Data Source 1'
QUESTION
I am making a simple code that you will have to put in the password and I would like to know how to make a code that will randomly distribute text. I have tried to use the push and pop methods.
...ANSWER
Answered 2021-May-06 at 17:59You can use:
text()
to render each characterrandom()
to pick a random position and angle (within a range)- use other text related functions to adjust the look of the characters such as
textFont()
to set a serif font andtextSize()
Here's a basic example with comments:
QUESTION
I am struggling with improving the speed of interpolation of a large dataset which I am interpolating using gridfit. I have already posted a question on stackoverflow but havent got a response
So, I am thinking of trying something alternate. My idea is that if I have a huge dataset, as shown by the Python code snippet below
...ANSWER
Answered 2021-May-25 at 12:59I think what you have in mind is essentially nearest neighbors regression. Here's how you could do this with scikit-learn. Note that the number 4 of neighbors considered is an arbitrary choice, so you could also try other values.
QUESTION
I'm looking to calculate the average of a series of cells across multiple tables on the same spreadsheet.
Each manager has a table and in each table, there are a number of statistics e.g. Total Activity, Outbound Calls & Credit. Each table is situated one under the other e.g. Danny's table might be situated on rows 1- 5, Ann's 7-12, Katie's 14-19. I need to find the average for each statistic and output it to my summary page.
I've tried using Application.WorksheetFunction.Average
but could not get it working as the range is scattered among various rows. I do however know that each variable appears in every 6th row so I tried For i = 2 To lastRow Step 6
which outputted the values into cells and calculated the averages based on that cell range but I'd rather have something more direct if possible.
Could anyone offer a valid solution to this?
Sample of data beneath. looking to get the average for each of the 4 variables.
...ANSWER
Answered 2021-May-21 at 06:29If there are other values than the values you want an average of in column B, you can use SUMPRODUCT.
Enter this formula in any cell in any other column than column B. It will calculate an average of every 6th value starting on row 2.
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