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QUESTION
I am trying to format the string in one the columns using pyspark udf.
Below is my dataset:
...ANSWER
Answered 2021-Mar-13 at 22:00You get this error because you are calling the python function format_column
instead of the registered UDF format_str
.
You should be using :
QUESTION
I have a fragment where i'm processing data from xml source , and everything is working fine , but the thing is when i refresh my layout by detaching and then attaching my fragment , the ui keeps blinking until all data is processed , i checked my code many time but i feel lost and i couldn't find anything
- This is how i'm processing my xml source data
ANSWER
Answered 2020-Oct-03 at 12:55You seem to be setting the RecyclerView
adapter multiple times in the while loop. This will keep refreshing the RecyclerView
.
You shouldn't be replacing the entire adapter, as the data changes. The data should be kept inside the adapter, and it should be updated inside the adapter.
How I got to this conclusion:
getData()
contains awhile()
loop.- In this while loop, in the last branch you call
CoroutineScope(Dispatchers.Main).launch {}
- In this
launch {}
you callbinding.newsrcycler.adapter = LeagueNewsAdapter()
.
QUESTION
I am working on a personal WebApp project in React. I am new to this technology but very eager to learn it. I came across a problem. I am using axios to fetch data from Google Youtube API response and it works but I am unable to parse obtained data that is nested. What i mean by that: Inside Items there are multiple snippets
...ANSWER
Answered 2020-Sep-22 at 21:00initial movie
is an empty array and it will take some time to fetch from API. refactor to the below
QUESTION
I am trying to make Tic Tak Toe Game but I got problem that I cannot handle.
When i make choice it set Text it as X and also Not Editable. Then i generate random number from 1-9 and by switch i go to another method checkButton() where I take text of button and if text is X or O , It should do random number again.
But actually whats work is that It change empty char into O but if Its X or O then It doesnt generate new number but only change those X or O to O. (Sometimes it makes my choice as O)
I dont know where I should change something.It may be problem outside those two methods so I am adding a pastebin link to see : https://pastebin.com/n80x9xSH
...ANSWER
Answered 2020-Aug-28 at 09:19You are comparing strings using ==
. Never do that. Use equals()
. Also, when comparing an instance of String to a constant string value, call equals()
on that constant value. In your case, you should be doing things like "X".equals(text)
and so on.
QUESTION
I want to overload the *
operator for my QUATERNION class but somehow I'm unable to use it at the same time with QUATERNIONs methods (Q4 example).
Is it possible to use somehow Q1*Q2.conjugated()
without creating any temp variables?
...C:\Users\xXx\Documents\Arduino\libraries\QUATERNION\extras\Quaternions\main.cpp|19|error: cannot bind non-const lvalue reference of type 'QUATERNION&' to an rvalue of type 'QUATERNION'|
ANSWER
Answered 2020-Aug-24 at 16:21In QUATERNION operator * (QUATERNION& A,QUATERNION& B);
, you accept A
and B
by non-const reference. The compiler expects you to change them. That's obviously wrong for a multiplication. Add the missing const
to both arguments, and to all other references in your code.
Also it appears that Angular
might be a type. You currently use a float[3]
for that.
QUESTION
I would like to model a covariant association between two classes, that can each be specialized. I need to show the specialization of the related association-classes. But I want to avoid that my model could mean that there are redundant associations (i.e. one between the generalizations and one between the specializations.
Step by step explanation of the problemI have in an UML class diagram a many-many association between a Person
and a Contract
. A person can be involved in several contracts, and conversely a contract can involve several persons. Each involved person ins involved with a role in the contract. One person can even be involved multiple time with different roles in the same contract:
There are many kind of Contract
specializations. Let's take a look at CompanyFoundationContract
, where several persons decide to create a company. Person
can also be specialized. Here I use a special kind of person called Founder
. In practice, I prefer composition over inheritance, and the founder would be a decorator. But I'll omit this detail later for the sake of simplification:
From the UML specialization, I know that Founder
and CompanyFoundationContract
inherit the many-to-many relation. But after discussion with my users of the legal practice, It soon appears that the Role
of a Founder
in a CompanyFoundationContract
needs to be specialized as well, to takie into account for example the shares held in the company. It seems simple to model this covariance in my class diagram:
At first sight, this model can represent the legal complexity of such contracts: it seems obvious that other persons that are not founders can be involved in the contract with a normal role (e.g. the notray or attorney who registers the company).
Since the association-class ShareHolderRole
is a specialization of the Role
association-class, I'd expect to clear that it's one and the same association between Contract
and Person
and between CompanyFoundationContract
and Founder
.
However, I am worried that I missed something and that interpreting UML strictly would imply to have two different and redundant associations. How shall I model accurately the fact that there is only one association, but a covariant association-class?
...ANSWER
Answered 2020-Jul-19 at 09:34(you have a typo in your diagram using Founders)
I'd expect to clear that it's one and the same association between Contract and Person and between CompanyFoundationContract and Founder
not for me, else that means it is not possible to have that association as an additional one but of course this is possible
if you want to make that clear add the name of the association ends and use the same couple of names :
you can also explicitly say each association end redefines the other, allowing to use different names :
or of course you can do in the same way I do in the 'source' answer :
where the constraints in blue concern the relation-class rather than just the corresponding classes, and the constraints in green are not mandatory because they can be deduced from the constraints in blue
QUESTION
I have the following list of data frames.
...ANSWER
Answered 2020-Aug-14 at 06:18The e
in your for
loop has no connection with original ern
list hence, it is not possible to add any new information in the list. You should iterate over the index of the list instead.
QUESTION
I have settings xml file where i have checkboxpreferences and a switchpreference , when i switch to dark mode , the tint of the switch and checkbox don't automatically change according to the selected mode here is an image of what i'm talking
So the switchpreference is supposed to be white when app is in dark mode but it is not changing , can anyone help me to fix it , thank you
*This is my setting xml file
...ANSWER
Answered 2020-Jul-02 at 15:32the colorAccent
in colors.xml/styles.xml
defines the color of checkboxes/rating bar ,progressbar/switch and for many other sdk widgets like some color is datePicker.
colorPrimary
sets the color for Action Bar colorPrimaryDark
sets the color for status bar they show up in many other places too i don't remember right now but you will notice with time.
also evidently the text color is not set by colorPrimary
because by default the text is gray and your colorPrimary
is not gray, the text color comes from an app theme attribute
called textColor
which is used by the TextView
internally you can override it in the app theme open the styles.xml
in the style named AppTheme
include
your color
to change the text color in the whole app
there are many other things you can override from the parent theme by default android studio just overrides colorAccent
colorPrimary
and colorPrimaryDark
you can for example override windowBackground
incude
@color/windowBackground
in AppTheme
to change the background which is by default white
for all apps there is much more stuff to customize for example overriding the default elevation for dialogs, or default text size or font etc.
so change the default color for switch
and ratingbar
you need to override colorAccent
if that color comes from the color.xml of values-night
and is also in values
folder's colors.xml the android chooses the correct one according the the current mode.
Have a good day
Love from india
QUESTION
I've done a research on this issue, but i can't seems to find the solution for my problem.
Other post of the same issue seems to be around binding issues, but i dont think that is the issue here.
When i load the page, the prop should be displayed, but it doesnt show anything.
When i write in the text form, i get the error: TypeError: this.props.AccountId is not a function", and this is where i am stuck at.
...ANSWER
Answered 2020-Feb-04 at 13:45Check your code,
QUESTION
I am beginner in php.
I have this code:
...ANSWER
Answered 2020-Jan-15 at 14:43An easy way for your example to work is to create an array of all the words in your input, and check each of them separately. Here is an example:
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