Month: September 2022

[Solved] Merge rows with same names and sum other values in other column rows [duplicate]

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We could first group_by country and then use summarise with across library(dplyr) df %>% group_by(country) %>% summarise(across(everything(), sum)) Output: country new_persons_vac~ total_persons_v~ new_persons_ful~ total_persons_f~ new_vaccine_dos~ total_vaccine_d~ <chr> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> 1 Afghan~ 294056 8452317 163535 2313338 457591 10765655 2 Albania 601152 27639676 465433 18105836 459226 45745512 3 Andorra 40569 360995 25838 144358 … Read more

[Solved] How to load json in main method Flutter?

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Found the Solution using FutureBuilder class MyApp extends StatefulWidget { @override _MyAppState createState() => _MyAppState(); } class _MyAppState extends State<MyApp> { _load() async { final file = await rootBundle.loadString(‘assets/j.json’); final data = await jsonDecode(file); print(data.toString()); } @override Widget build(BuildContext context) { return FutureBuilder( future: _load(), builder: (_, AsyncSnapshot<dynamic> snapshot) { return !snapshot.hasData ? Container( color: … Read more

[Solved] Can the delete operator be used instead of the Marshal.FreeHGlobal method to free memory from a wchar_t*?

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Don’t use Marshal::StringToHGlobalUni in C++/CLI. Use either PtrToStringChars (accesses Unicode characters in-place, no allocation) or marshal_as<std::wstring> (manages the allocation with a smart pointer class that will free it correctly and automatically) Apart from the fact that StringToHGlobalUni requires you to free the memory manually, the name of that function is completely misleading. It has absolutely … Read more

[Solved] php function is not working? [closed]

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In your case there are too many unknowns. First of all you must enable a proper error reporting level and – only for development – let the errors be displayed on screen. Second, there are important error/failure situations which you are not covering with your exception handling code. Also, I would use bindValue() instead of … Read more

[Solved] show title of the page in tab of browser

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you can follow default routine for displaying title in ASP.NET MVC. in _Layout.cshtml <html lang=”en”> <head> <meta charset=”utf-8″ /> <title>Your SiteName | @ViewBag.Title</title> . . in other pages just set ViewBag.Title. for example login page @model LoginModel @{ ViewBag.Title = “Login page”; } 0 solved show title of the page in tab of browser

[Solved] PHP – Why there is a difference in the output of the echo statement and the print_r() function when viewed in a browser? Please explain

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PHP – Why there is a difference in the output of the echo statement and the print_r() function when viewed in a browser? Please explain solved PHP – Why there is a difference in the output of the echo statement and the print_r() function when viewed in a browser? Please explain

[Solved] How I Add Button Go To The Instagram? [duplicate]

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I believe this is what you’re looking for (not entirely sure since your question wasn’t very descriptive). NSURL *url = [NSURL URLWithString:@”instagram://user?username=USERNAME”]; if ([[UIApplication sharedApplication] url]) { [[UIApplication sharedApplication] url]; } else { // handle the issue } Otherwise, see the instagram api here. solved How I Add Button Go To The Instagram? [duplicate]

[Solved] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ”’)

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No need to use single quote with table name(‘operations’) & specify table name with row like groupName.operations, group_ID.operations. 2 solved You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ”’)