error: no type named 'string_view' in namespace 'std'

Questioncat buggy-code.cpp #include <iostream> #include <string> #include <string_view> int main() { std::string s = "Hellooooooooooooooo "; std::string_view sv = s + "World\n"; std::cout << sv; }clang++ -fsanitize=scudo -g buggy-code.cpp buggy-code.cpp:7:8: error: no type named 'string_view' in namespace 'std' std::string_view sv = s + "World\n"; ~~~~~^ 1 error generated. Answerclang++ -std=c++17 -fsanitize=scudo -g buggy-code.

fatal error: 'iostream' file not found

Questioncat buggy-code.cpp #include <iostream> #include <string> #include <string_view> int main() { std::string s = "Hellooooooooooooooo "; std::string_view sv = s + "World\n"; std::cout << sv; }clang++ -fsanitize=scudo -g buggy-code.cpp buggy-code.cpp:1:10: fatal error: 'iostream' file not found #include <iostream> ^~~~~~~~~~ 1 error generated. Answersudo apt install libstdc++-12-devhttps://askubuntu.com/a/1490796

error: Libtool library used but 'LIBTOOL' is undefined

Question./autogen.sh Makefile.am:80: error: Libtool library used but 'LIBTOOL' is undefined Makefile.am:80: The usual way to define 'LIBTOOL' is to add 'LT_INIT' Makefile.am:80: to 'configure.ac' and run 'aclocal' and 'autoconf' again. Makefile.am:80: If 'LT_INIT' is in 'configure.ac', make sure Makefile.am:80: its definition is in aclocal's search path. autoreconf: error: automake failed with exit status: 1 patching m4/libtool.m4: See https://github.com/gperftools/gperftools/issues/1429#issuecomment-1794976863 Answersudo apt install libtool

type 'Null' is not a subtype of type 'WidgetsLocalizations' in type cast

Questionflutter-elinux run -d roc-rk3328-cc Launching lib/main.dart on eLinux in debug mode... Uninstall sentry_flutter_example from roc-rk3328-cc. Uninstallation Success Install sentry_flutter_example (build/elinux/arm64/debug/bundle) to roc-rk3328-cc Installation Success Launch sentry_flutter_example.name on roc-rk3328-cc [...] A Dart VM Service on eLinux is available at: http://127.0.0.1:37901/xenGZhwqIcA=/ The Flutter DevTools debugger and profiler on eLinux is available at: http://127.0.0.1:9101?uri=http://127.0.0.1:37901/xenGZhwqIcA=/ ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ The following _TypeError was thrown building Localizations(locale: C, delegates: [GlobalCupertinoLocalizations.delegate(78 locales), GlobalMaterialLocalizations.
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