Chrome调试器无法在vscode中工作

时间:2018-06-23 08:32:48

标签: visual-studio-code

当我尝试启动Chrome调试器时,出现以下错误:

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这是launch.json代码:

quadraticEquation <- function(p, q){
  ## ------------------------% chek the arguments %---------------------------##
  if(
    missing(p) | missing(q)                              # if any of arguments is 
  ){                                                     # missing - stop.
    stop("[!] There are argument/s missing")
  }
  else if(
    !is.numeric(p) | !is.numeric(q) | any(is.na(c(p, q))) # !is.numeric(c(1, T))
  ){                                                     # returns TRUE - conver-    
    stop("[!] Argument/s p or/and q are not numeric")    # tion to the same type
  }
  ## --------------------% main part of the function %--------------------------##  
  r2 <- p^2 - 4*q                                        # calculate r^2,
  if(r2 < 0){                                            # if r2 < 0 (convert) it 
    warning("equation has complex roots")                # to complex and warn
    r2 <- as.complex(r2)
  }
                                                         # return named roots
  setNames(c(-1, 1) * sqrt(r2)/2 - p/2, c("x1", "x2"))
}

quadraticEquation()                                      # No arguments provided
#Error in quadraticEquation() : [!] There are argument/s missing
quadraticEquation(p = 4)                                 # Argument q is missing
#Error in quadraticEquation(p = 4) : [!] There are argument/s missing
quadraticEquation(p = TRUE, q = 7)                       # p is logical
#Error in quadraticEquation(p = TRUE, q = 7) : 
#[!] Argument/s p or/and q are not numeric
quadraticEquation(p = NA, q = 7)                         # p is NA
#Error in quadraticEquation(p = NA, q = 7) : 
#[!] Argument/s p or/and q are not numeric
quadraticEquation(p = 7, q = -4)                         # real roots
#        x1         x2 
#-7.5311289  0.5311289 
quadraticEquation(p = -4, q = 7)                         # complex roots
#         x1          x2 
#2-1.732051i 2+1.732051i
#Warning message:
#In quadraticEquation(p = -4, q = 7) : equation has complex roots

0 个答案:

没有答案