indirection

问题 I'm trying to define a function which returns a graphical object in R. The idea is that I can then call this function with different arguments multiple times using an for loop or lapply function, then plotting the list of grobs in gridExtra::grid.arrange . However, I did not get that far yet. I'm having trouble with r recognising the arguments as being part of the call. I've made some code to show you my problem. I have tried quoting and unquoting the arguments, using unqoute() in the

问题 Given: #include <iostream> #include <functional> template<class T> // Just for overloading purposes struct behaviour1 : std::reference_wrapper<T const> { using base_t = std::reference_wrapper<T const>; using base_t::base_t; // This wrapper will never outlive the temporary // if used correctly behaviour1(T&& t) : base_t(t) {} }; template<class T> behaviour1(T&&) -> behaviour1<std::decay_t<T> >; struct os_wrapper : std::reference_wrapper<std::ostream> { using std::reference_wrapper<std::ostream

来源： https://stackoverflow.com/questions/63658986/executing-the-output-as-filename

来源： https://stackoverflow.com/questions/63658986/executing-the-output-as-filename

来源： https://stackoverflow.com/questions/57781074/inserting-for-loops-variable-into-another-variable-names

来源： https://stackoverflow.com/questions/63660088/execute-command-that-results-from-execution-of-a-script-whose-name-is-in-a-varia

来源： https://stackoverflow.com/questions/63660088/execute-command-that-results-from-execution-of-a-script-whose-name-is-in-a-varia

来源： https://stackoverflow.com/questions/63660088/execute-command-that-results-from-execution-of-a-script-whose-name-is-in-a-varia

问题 This question already has answers here : Calling dynamic variable in PowerShell (2 answers) Closed last year . I am attempting to do something similar to the following ... New-Variable -Name "state_$name" -Value "True" if ("state_$name" -eq "True") { Write-Host "Pass" } else { Write-Host "Fail" } I have attempted this a number of different ways but it is not working exactly how I would like it to work. I need to write the if statement to account for a dynamic variable as these values will

问题 This question already has answers here : Calling dynamic variable in PowerShell (2 answers) Closed last year . I am attempting to do something similar to the following ... New-Variable -Name "state_$name" -Value "True" if ("state_$name" -eq "True") { Write-Host "Pass" } else { Write-Host "Fail" } I have attempted this a number of different ways but it is not working exactly how I would like it to work. I need to write the if statement to account for a dynamic variable as these values will