arguments

问题 I'm new to Matlab and I'm trying to write custom function in matlab that would take function handle as one of its arguments. I'm getting this error all the time: Error using subsindex Function 'subsindex' is not defined for values of class 'function_handle'. Trying to debug I performed following test: I run command x = fminbnd(@humps, 0.3, 1) . I proceeded as expected - I got result x = 0.6370 . So I created custom function called train and I copied ALL the code of function fminbnd to the

问题 I want to create an alias for this command "rmi" so that if I execute rmi File.txt it will actually execute ls * | grep -v File.txt | xargs rm -rf Basically I want to reorder arguments. 回答1: Script: #!/usr/bin/env bash ls * | grep -v $1 | xargs rm -rf -Save this as rmi. -do: chmod a+x rmi -Then add to path. 回答2: You can't do that with an alias. You'll need to write a script. 回答3: You don't need a script. Instead of alias, you can write a shell function: myfunc() { ls * | grep -v $1 | xargs rm

问题 I'm trying to write the first argument of a command line in a file, but it works in command line and not with drag and drop. The very simple batch file ( test_echo.cmd ) is as following: @echo OFF echo %1 > echo_arg_in_file.txt` On the command line, C:\rep>test_echo.cmd "C:\rep\fichier de test.txt"` creates a file echo_arg_in_file.txt with "C:\rep\fichier de test.txt" written inside. But with a drag and drop of the file "C:\rep\fichier de test.txt" on the batch file, nothing happens... (the

问题 I am trying to write a function what makes R interpret arguments without evaluating them and pushes them into a new string. This is what I have so far. It is very ugly but works for up to 5: pl <- pasteliteral <- function(v1='',v2='',v3='',v4='',v5='', sep="") { stopifnot(v1!="") # Sort up to 10 values if (deparse(substitute(v1)!="")) {s<-deparse(substitute(v1)) if (deparse(substitute(v2)!="")) {s<-paste(s, deparse(substitute(v2)), sep=sep) if (deparse(substitute(v3)!="")) {s<-paste(s,

问题 How can we pass arguments to scala script like how we pass arguments to a shell script. 回答1: Declare your script with bash command on top like this Test.scala #!/bin/sh exec scala "$0" "$@" !# object Test { def main(args: Array[String]): Unit = { println(s"args: ${args.mkString("[", ", ", "]")}") } } It works [Desktop] ./Test.scala "scala is awesome" "java8 has lambdas" args: [scala is awesome, java8 has lambdas] More info regarding $0 and $@ 0 Expands to the name of the shell or shell script

问题 I am not sure if it is possible, but I would like to be able to grab the default argument values of a function and test them and the code within my functions without having to remove the commas (this is especially useful in the case when there are many arguments). In effect, I want to be able to have commas when sending arguments into the function but not have those commas if I copy and paste the arguments and run them by themselves. For example: function foo( x=1, y=2, z=3 ) bar(x,y,z) end

问题 For some reason i'm loosing access to my variables inside the switch statement, I am not allowed to use any global variables. import java.util.Scanner; public class Projet { public static void main(String[] args) { String clef="vide"; Scanner in = new Scanner(System.in); showMenu(in); in.close(); } Main method is kept as clean as possible ... calling the menu just once. public static void showMenu(Scanner in){ System.out.printf("******************************************%n" + "* Choisissez

问题 I have task: desc "Create a team" task :create_dev_team, [:team_name] do |t, args| puts "Creating \"#{args.team_name}\" team under Sub Org ID: 1" ESP::Team.create(name: "#{args.team_name}", sub_organization_id: 1) end I call: rake create_dev_team[Team Name] I get: rake aborted! Don't know how to build task 'create_dev_team[Team' /Users/me/.rvm/gems/ruby-2.4.1/gems/rake-10.3.2/lib/rake/task_manager.rb:62:in `[]' /Users/me/.rvm/gems/ruby-2.4.1/gems/rake-10.3.2/lib/rake/application.rb:149:in

问题 I have some php code that is pretty much being duplicated save for some minor variable naming differences. How can I turn this into a reusable function where I can pass arguments thru? This is the code which I am using twice. The second one is the same except all references of "affiliate" is changed to "social". <?php $affiliate = wp_list_bookmarks( array( 'categorize' => 0, 'category' => '7', 'title_li' => '', 'orderby' => 'rating', 'show_images' => 0, 'echo' => 0 ) ); preg_match_all( '/<li>

问题 Let's say I have the following interface: public interface Numeric { public Numeric addition(Numeric x,Numeric y); } And the following class: public class Complex implements Numeric { private int real; private int img; public Complex(int real, int img){ this.real = real; this.img = img; } public Numeric addition(Numeric x, Numeric y){ if (x instanceof Complex && y instanceof Complex){ Complex n1 = (Complex)x; Complex n2 = (Complex)y; return new Complex(n1.getReal() + n1.getReal(), n2.getImg()