arguments

问题 I am using the rdd (regression discontinuity design) package's DCdensity function and would like to change how the plot looks. I went to the help file for this function and found the following, under plot : "The user may wrap this function in additional graphical options to modify the plot." How can I go about doing this in practice? I note that my question is the same as R plot options in rdd::DCdensity. However, the one answer to this old question is unsatisfactory to me because I do not

问题 Here's what I want to do: function someEvent(e) { } onxxxx="someEvent()" and turn that into: function someEvent(e, arg1, arg2) { } onxxxx="someEvent(???)" So basically, I want to pass other arguments including the default event one, but I'm not sure quite how to 回答1: You can pass the event object as an argument: onxxxx="someEvent(event, arg1, arg2);" event must be literal event here. Within the eventhandler function you find them like so: function someEvent(e, a, b) { // e === event object //

问题 Can't find a question similar to what I am trying to do. I have a workhorse function that can take any of a class of custom-made sub-functions, with their respective arguments, and do certain processing on it, like the following toy examples: func1 <- function(a, b, c) {a + b * c} func2 <- function(x, y, z, bob, bleb) {(x / y)^bleb * z/bob} workhorse <- function(m, n, o, FUN, ...) { result <- FUN(x, y, ...) [process result with m, n, and o] } By itself, this works perfectly well as intended,

问题 I am very new to programming and am trying to learn Ruby. I can't quite get my head around methods at the moment. I uderstand that: Methods allow me to execute a chunk of code without having to rewrite it, such a method looks like: example_method Arguments allow me to pass values into the code within the method that go in the place of the placeholders defined in the method. This way I can execute a set of code with different inputs. Methods with arguments look like: example_method( x , y )

问题 I am very new to programming and am trying to learn Ruby. I can't quite get my head around methods at the moment. I uderstand that: Methods allow me to execute a chunk of code without having to rewrite it, such a method looks like: example_method Arguments allow me to pass values into the code within the method that go in the place of the placeholders defined in the method. This way I can execute a set of code with different inputs. Methods with arguments look like: example_method( x , y )

问题 This question already has an answer here : Where can I get info on the object parameter syntax for JavaScript functions? (1 answer) Closed 11 months ago . I recently came across this nifty piece of JavaScript and I am struggling a bit to understand how it works, and specifically this part : Array.from(e.attributes, ({name, value}) => [name, value]) Here, we deal with a NamedNodeMap which is a collection of Attr objects, and an Attr does have properties named name and value among many others.

问题 I am trying to set the initial text for what the twitter message should say in my app using a NSString from my appDelegate. Check out the code here: NSString *tweet; tweet=[MyWebFunction tweet:appDelegate.stadium_id]; if([deviceType hasPrefix:@"5."]){ // Create the view controller TWTweetComposeViewController *twitter = [[TWTweetComposeViewController alloc] init]; [twitter setInitialText:@"@%",tweet]; The problem is, is there is an error at the twitter setInitialText that there are Too many

问题 This question already has answers here : Difference between . and : in Lua (3 answers) Closed 3 years ago . Let's say we have two function declarations: function MyData:New end and function New(MyData) end What is the difference between them? Does using : have any special purpose when it comes to inheritance and OOP? Can I only call functions declared with : by using : ? I'm coming from using only C# -- so if there's any comparison to be made, what would it be? 回答1: You should search SO as

问题 This question already has answers here : How to use argv with Spyder (4 answers) Closed last year . I don't know how to execute a program with optional arguments on Spyder. I know how to pass variables to it, but my program uses argparse, and I want to execute it with the "-h" or "--help" option, the code is the following one import argparse parser = argparse.ArgumentParser() parser.parse_args() For now, it only has the default optional argument of "-h"/"--help", I tried putting it on

问题 This question already has answers here : How to use argv with Spyder (4 answers) Closed last year . I don't know how to execute a program with optional arguments on Spyder. I know how to pass variables to it, but my program uses argparse, and I want to execute it with the "-h" or "--help" option, the code is the following one import argparse parser = argparse.ArgumentParser() parser.parse_args() For now, it only has the default optional argument of "-h"/"--help", I tried putting it on