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QUESTION
Is there a way to prevent one particular object of being destroyed while another object still exists, without explicitly making the class of the second one to know about the first?
Here is an example:
...ANSWER
Answered 2021-May-04 at 12:45You can absolutely do this using shared_ptr
, but you'll have to write some extra code.
Just have getB
return a shared_ptr
with a custom deleter ... the deleter should be a lambda capturing a shared_ptr
by value, and explicitly releasing that only when spB
goes out of scope and tries to delete the B
object.
A
will have to derive from std::enable_shared_from_this
to get a viable shared pointer to itself from inside A::getB()
.
If the B
object is actually a subobject of A
, then this is sufficient. Otherwise, you should really delete the B
as well.
QUESTION
Imagine a datastream like this
A,A,B,A,C,C,C,A,B,A,A,A,B...
Now lets assume we have a StreamProcessor
that will handle the stream. We can process A,B,C in parallel but individual As,Bs,Cs have to be processed in sequence.
Example:
Thread 1: Processes all As in sequence
Thread 2: Processes all Bs in sequence
and so on...
So for A,B,C I have a StreamProcessor (SP).
Each of the stream elements has a timestamp and thus can be ordered by time (It actually comes in the correct sequence). The elements have to be processed in time sequence.
So now I split up all my stream elements to their processors (SPA,SPB,SPC).
I have a TreeSet in ever SP where I add the elements.
So whenever there is a new element I basically do this:
...ANSWER
Answered 2021-Apr-30 at 16:06I would do it like this (PseudoCode-Like):
QUESTION
To make things clearer, I don't want to remove the entire bin from the histogram, I just want to get rid of some of the data so that it is brought below a desired frequency. The line in the image shows the max frequency I would like
For context, I have a dataset containing a number of angles. My question is very similar to the question asked here Remove data above threshold in histogram in terms of the data used but unlike the question in the link, I dont wish to get rid of the data, just reduce it.
Can I do this directly from the histogram or will I need to just delete some of the data in the dataset?
edit (sorry I am new to coding and formatting here): here is a solution i tried
...ANSWER
Answered 2021-Apr-05 at 01:16This answer doesn't re-bin or re-center the data, but I believe it generally achieves what you're asking. Working from the example in the chosen answer of the post you linked, I edit the hist
array so that the original input data is not changed as you indicated is your preferred solution:
QUESTION
I want to creat a dynamic group that get all users that has MICROSOFT 365 BUSINESS PREMIUM
Syntax
...ANSWER
Answered 2021-Mar-22 at 07:03Firstly, SPB (MICROSOFT 365 BUSINESS PREMIUM) is license rather than plan. So you should look into user.assignedLicenses
rather than user.assignedPlans
.
Secondly, for Multi-value properties, we should use -any
operator, for example:
QUESTION
I have a DataFrame as below:
...ANSWER
Answered 2021-Mar-05 at 09:35I would try to use merge
on the dataframe instead of using recursion.
First I would define a function that computes paths with one intermediate step from your dataframe:
QUESTION
Hello I have a dataframe such as
...ANSWER
Answered 2021-Mar-04 at 10:40library(tidyverse)
df %>%
mutate(Names = ifelse(Names == "Unknown",
paste0("Unknown_", 1 + cumsum(Names == "Unknown" & !Sp == lag(Sp, default = first(Sp)))),
as.character(Names)))
Names Sp
1 Unknown_1 SP1
2 Unknown_1 SP1
3 Unknown_1 SP1
4 Unknown_2 SP2
5 Unknown_2 SP2
6 Unknown_3 SP3
7 Unknown_4 SP4
8 OK SP4
9 OK SP5
10 Unknown_5 SPA
11 Unknown_6 SPB
12 Unknown_7 SP1
QUESTION
First of all, I am very new to jQuery, so I'm sure this is super simple but I really don't know how to do it. I currently have a jQuery function I wrote that returns the scroll position of a specific element and applies that value as a percent height for a progress bar elsewhere on the page. See below:
...ANSWER
Answered 2021-Feb-25 at 15:24Like this
QUESTION
My .htaccess has the following code :
...ANSWER
Answered 2021-Jan-25 at 07:59Could you please try following, based on your shown samples only. Please make sure you clear your browser cache before testing your URLs
QUESTION
I have an object in which extended address information (street name, zip code, house number, etc.). I need to check for the existence of a street, a house, and if they do not exist, display an error. The array is below:
...ANSWER
Answered 2021-Jan-09 at 10:09You can search the address components array for some element entry that has a types
array with every value you want it to contain.
QUESTION
I have the following code snippet that I am working with. I could not get my SVG image fit my container div.
...ANSWER
Answered 2020-Dec-17 at 17:23Just use width:100%; height:100%
in the CSS. It will force the SVG
to take up all the space of the div
.
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