foreach

问题 Is foreach by-definition guaranteed to iterate the subject collection (if it defines order) sequentially from the very first to the very last (unless accidentally interrupted) element? Aren't there any compiler optimization switches which can brake it (shuffle the sequence) or plans to make the ordinary foreach parallel in future versions? 回答1: Foreach is guaranteed to be sequential for sequential collections (that is, the normal hierarchy, or for anything transformed by .seq ). The parallel

问题 Could you help me implementing a counter in order to generate an xml file with multiple element from a csv inside? Here is the csv file UCB63_DATENUM;U6618_FILENAME;UF6E8_CANAL;U65B8_IDRP 7/8/19 22:27;457E6659_ZN_LIQRLVPR_A_V_ML.pdf;ML;1367091 9/11/19 23:03;49453878_ZN_LIQRLVPR_A_V_ML.pdf;ML;106440 9/24/19 21:04;497E585B_ZN_LIQRLVPR_A_V_CS.pdf;CS;1536658 2/12/20 22:12;58453B75_ZN_LIQRLVPR_A_V_ML.pdf;ML;1406091 and the code My return on the screen is good but as I am not calling the value, it

问题 Could you help me implementing a counter in order to generate an xml file with multiple element from a csv inside? Here is the csv file UCB63_DATENUM;U6618_FILENAME;UF6E8_CANAL;U65B8_IDRP 7/8/19 22:27;457E6659_ZN_LIQRLVPR_A_V_ML.pdf;ML;1367091 9/11/19 23:03;49453878_ZN_LIQRLVPR_A_V_ML.pdf;ML;106440 9/24/19 21:04;497E585B_ZN_LIQRLVPR_A_V_CS.pdf;CS;1536658 2/12/20 22:12;58453B75_ZN_LIQRLVPR_A_V_ML.pdf;ML;1406091 and the code My return on the screen is good but as I am not calling the value, it

问题 Could you help me implementing a counter in order to generate an xml file with multiple element from a csv inside? Here is the csv file UCB63_DATENUM;U6618_FILENAME;UF6E8_CANAL;U65B8_IDRP 7/8/19 22:27;457E6659_ZN_LIQRLVPR_A_V_ML.pdf;ML;1367091 9/11/19 23:03;49453878_ZN_LIQRLVPR_A_V_ML.pdf;ML;106440 9/24/19 21:04;497E585B_ZN_LIQRLVPR_A_V_CS.pdf;CS;1536658 2/12/20 22:12;58453B75_ZN_LIQRLVPR_A_V_ML.pdf;ML;1406091 and the code My return on the screen is good but as I am not calling the value, it

问题 I'm sure this is a duplicate, but I've tried several different things on the site here and none of them are working for me. I'm calling my function in php, sending $mysqli connection, the $clientID, and the array of $tagFields to upload. It's 'working', but the values are always null. I've put echo "$tagName" inside the foreach, and it's reading it, but not sending it up to the database. $clientID, however, IS passing information. So basically all it does is upload consistently blank rows

问题 I am trying to print a value from one foreach loop. Then go to the other foreach loop and continue until the last elements in both arrays. @list = (10, 20, 30, 40, 50); @list1 = (15, 25, 35, 45, 55); OUTER:foreach $a (@list) { print "value of a: $a\n"; foreach $b (@list1) { print "value of b: $b\n"; next OUTER; } } This returns the same value from the second foreach loop. value of a: 10 value of b: 15 value of a: 20 value of b: 15 value of a: 30 value of b: 15 value of a: 40 value of b: 15

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 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-

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-