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19771 questions


2 answers
291 views
0
The LOOP of the for statement is duplicated.

We would like to combine the average with the evaluation of each class when we receive the following monthly test results (ABC evaluation).I want to combine only each element using loop, but the calcu...

2 years ago

1 answers
423 views
0
Password is not hashed.

environmentmampphp7.4mysql 5.7phpmyadminWhat you want to do and what you can't doThe current feature is that after registering with signup.php and saving the name, password column to the users table, ...

2 years ago

2 answers
353 views
0
if statement simple data processing

I'm a beginner, so I may not be able to say enough, but I appreciate your cooperation.The csv file (filename data-path) says the following in order from the first row to the first column.I was trying ...

2 years ago

1 answers
481 views
0
I want to control which websites I can access every hour.

I'm sorry for the rough question, but I appreciate your cooperation.I would appreciate it if you could give me an idea like this.On the school network, each classroom has 30 PCs and 10 classes.I'd lik...


2 answers
403 views
0
I don't know what Monad's m or Functor's f means.Also, I don't understand the notation on the instance side.

To Box Thinking Functor, Applicative, and Monad-Qiita Maybe definition was included.class Monad where (>>=):ma->(a->mb)->mbAnd To Functors, Applied Functors and Monoids-Learn You a Has...

2 years ago

1 answers
209 views
0
dyld —Library not loaded: @rpath/RxRelay.framework/RxRelay

RxSwift 6.0.0-rc.1 https://github.com/ReactiveX/RxSwift/tree/6.0.0-rc.1#manually-using-git-submodulesIt was introduced as a submodule of Git as shown in .I ran the simulator and the test without any p...

2 years ago

4 answers
343 views
0
Maybe we should stop declaring List list = new ArrayList()

It is often stated that List=newArrayList() should be written instead of ArrayList=newArrayList(), but is this really an excellent way to write?For example, English stackoverflow states that List=new ...

2 years ago

2 answers
226 views
0
How Python Gets the Appearance Frequency of a Month from the Date List

The following date data are available:DatetimeIndex('2019-06-05', '2019-06-14', '2019-06-24', '2019-07-03', '2019-07-30', '2019-07-31', '2019-08-06', '2019-08-28', '2019-09-03', '2019-09-26', '201...

2 years ago

1 answers
415 views
0
Recognizing IJCAD Selection States

We are developing an application for IJCAD using .NET.I want to receive a notification when I select a figure without executing the command, but I don't know how to do it.AUTOCAD was accomplished by h...

2 years ago

2 answers
349 views
0
How to Delete a Specific Row in a Pandas Data Frame

(Questions regarding preprocessing of purchasing data)I have the following data frames that are numbered consecutively for each id, purchase date, store, product, and sales type.df=pd.DataFrame({'id':...

2 years ago
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