ellipsis

问题 I know that you can catch "all exceptions" and print the exception by try { //some code... }catch(const std::exception& e) { cout << e.what(); } but this is just for exceptions derived from std::exception. I was wondering if there is a way to get some information from an ellipsis catch try { //some code... }catch(...) { // ?? } If the mechanism is the same as ellipsis for functions then I should be able to do something like casting the argument of the va_list and trying to call the what()

问题 I am at my wits end. I am new to powershell and I have tried everything I have been able to find on this subject online. What I am trying to do is print a hashtable of arrays to a file without the stupid ellipsis appearing at the end of each array value. Below is my best attempt. # Update output buffer size to prevent clipping in output window. if( $Host -and $Host.UI -and $Host.UI.RawUI ) { $rawUI = $Host.UI.RawUI $oldSize = $rawUI.BufferSize $typeName = $oldSize.GetType( ).FullName $newSize

问题 Is there any way at all for this code to compile and work as intended without resorting to va_list stuff ? #include <iostream> void fct(void) { std::cout << std::endl; } void fct(int index, int indexes...) { std::cout << index << ' '; fct(indexes); //or fct(indexes...); ? } int main(void) { fct(1, 2, 3, 4, 5, 6, 7); return 0; } 回答1: I suspect you have misunderstood the meaning of the signature void fct (int index, int indexes...) I suspect you think that fct() expect a int single value (

问题 I'm not sure if I labelled my question correct, but I give it a shot: I want to use a package with a function which uses an ellipsis, func(...) . All my arguments of class My_Class are in a list. As I have quite a lot of arguments, I'd like to avoid func(arg1, arg2, arg3) . So ideally I'd like to do func( my_list ) . The problem is that the function looks like this function(...) { cl <- match.call(expand.dots = FALSE) names <- lapply(cl[[2]],as.character) ev <- parent.frame() classes <-

问题 Someone posted this interesting formulation, and I tried it out in a Python 3 console: >>> (a, b) = a[b] = {}, 5 >>> a {5: ({...}, 5)} While there is a lot to unpack here, what I don't understand (and the semantics of interesting character formulations seems particularly hard to search for) is what the {...} means in this context? Changing the above a bit: >>> (a, b) = a[b] = {'x':1}, 5 >>> a {5: ({...}, 5), 'x': 1} It is this second output that really baffles me: I would have expected the {.

问题 I want to create a wrapper function replacing some of the default arguments. Here the core of the problem I'm struggling with: Error in localWindow(xlim, ylim, log, asp, ...) : formal argument "cex" matched by multiple actual arguments Now a bit of a context. Suppose I define a wrapper function for plot like this: myplot <- function(x, ... ) { plot(x, cex= 1.5, ... ) } If I call myplot( 1:10, cex= 2 ) I will get the above error. I know I can turn ... to a list l <- list(...) and then I could

问题 I found quite a few examples for showing progress where the progress bars and wheels are used however; I could find only one javascript example to show an ellipsis (dot-dot-dot) to refer progress hence I thought of asking this question. My app is not very complex - it only has a few check-boxes and one button. Recently my team requested for an enhancement and want to keep it simple as well. There is a button named 'GO' that the user clicks after configuring the required settings. The code

问题 I have a TextView with maxlines=3 and I would like to use my own ellipsis, instead of "Lore ipsum ..." I need "Lore ipsum ... [See more]" in order to give the user a clue that clicking on the view is going to expand the full text. Is it possible ? I was thinking about check whether TextView has ellipsis and in such a case add the text "[See more]" and after that set ellipsis just before, but I couldn't find the way to do that. Maybe if I find the position where the text is cutted, I can

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: What's does … mean in an argument list in C ? function fun1(...) { } Please tell me about what is the use and how to use ellipsis operator in c. Thanks, 回答1: An ellipsis is used to represent a variable number of parameters to a function. For example: void format(const char* fmt, ...) The above function in C could then be called with different types and numbers of parameters such as: format("%d-%d-%d", 2010, 9,

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: What's does … mean in an argument list in C ? function fun1(...) { } Please tell me about what is the use and how to use ellipsis operator in c. Thanks, 回答1: An ellipsis is used to represent a variable number of parameters to a function. For example: void format(const char* fmt, ...) The above function in C could then be called with different types and numbers of parameters such as: format("%d-%d-%d", 2010, 9,