loops

问题 I've been trying to combine multiple async calls for a while now, and everytime I get close, I get stuck at a foreach loop I'm trying to solve. At the moment I pass an array of categories to a function, which will return an observable containing an array of all the questions (of all the categories combined). I was thinking of getQuestions(categories: Category[]): Observable<Question[]> { let q: Question[]; categories.forEach(c => { this.cs .getQuestionsCategory(c.id) .pipe(map(questions => q

问题 I'm learn tensorflow2.0 from official tutorials.I can understand the result from below code. def square_if_positive(x): return [i ** 2 if i > 0 else i for i in x] square_if_positive(range(-5, 5)) # result [-5, -4, -3, -2, -1, 0, 1, 4, 9, 16] But if I change the inputs with tensor not python code, just like this def square_if_positive(x): return [i ** 2 if i > 0 else i for i in x] square_if_positive(tf.range(-5, 5)) I get below error!! OperatorNotAllowedInGraphError Traceback (most recent call

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 21 days ago . Improve this question I want to sort out the input which is name followed by the grades, I only want to sort out the grades Sample input: 3 (limit) Hussain 70 Omer 60 User 92 Sample Output: User 92 Hussain 70 Omer 60 Code: import java.util.Scanner; import java.util.Arrays; public class

问题 I need some help with some VBA for Access. I have a table "Client_Table" with 100 rows of data. I have another table "SalesRep_Table" where I have 10 distinct Sales Rep ID numbers (such as: AA1111 , and so on). My goal is to run a procedure that takes the first ID record "AA1111" and places it in the appropriate column on the Clients table named "AssignedSalesRepID" for the first 10 rows, then the next ID number in the SalesRep_Table gets inserted into the next 10 cells in the Clients table,

问题 I'm trying to write a simple loop in JS (or JQuery) that updates an image every five seconds, for a total of 15 seconds (so three loops), and then quits. It should go like this: Wait five seconds Execute Wait five seconds Execute Wait five seconds Execute Quit But setTimeout only seems to work once. As a test, I've tried: function doSetTimeout(i) { setTimeout(function() { alert(i); }, 5000); } for (var i = 1; i <= 5; ++i) doSetTimeout(i); Does not work: http://jsfiddle.net/ubruksco/ I've also

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . Improve this question I was browsing through questions regarding continue keyword to get a better understanding of it and I stumbled upon this line in this answer These can be maintenance timebombs because there is no immediate link between the "continue"/"break" and the loop

问题 I have several data frames within a list which I have to modify by normalizing all the data, in all columns (basically, divide each row/column by the sum of the number of that column). After loading all my raw data frames with lapply I want to iterate over all columns to perform such operation (i.e. mutate(df, df$my_column=df$my_column/sum(df$my_column))). My code is: samplelist <- list(df1 = "path to df1", df2 = "path to df2", df3 = "path to df3") samples <- lapply(names(samplelist),function

问题 I am stuck at a part where I am supposed to declare a string variable called "phrase", where it shouldn't loop, all the way through. to give you an idea my task is: Similar to Option 1 except the user enters 'N' (instead of 'Q') when they are done entering results for the first team. Then, the program inputs a second team name and its results until 'Q' is entered. Outputs two statements, like the statements in option 1 followed by a third statement that says which team is in first place

问题 Hello everyone here is my case: I'm crawling through the old page with more than 10 000 comments which I'm trying to import to WordPress. I'm using simple_html_dom.php library, which in this case is not important. What I'm doing is getting a URL with 24 first posts crawling through them and getting an element with comments. $url = 'http://xx/aktualnosci,wszystkie,0,'.$x.'.html'; //some URL with first 24 posts $html = file_get_html($url); $articlesCount = 0; $commentsCount = 0; foreach ($html-

问题 Hello everyone here is my case: I'm crawling through the old page with more than 10 000 comments which I'm trying to import to WordPress. I'm using simple_html_dom.php library, which in this case is not important. What I'm doing is getting a URL with 24 first posts crawling through them and getting an element with comments. $url = 'http://xx/aktualnosci,wszystkie,0,'.$x.'.html'; //some URL with first 24 posts $html = file_get_html($url); $articlesCount = 0; $commentsCount = 0; foreach ($html-