syntax-error

问题 In the question What does the "yield" keyword do?, I found a Python syntax being used that I didn't expect to be valid. The question is old and has a huge number of votes, so I'm surprised nobody at least left a comment about this function definition: def node._get_child_candidates(self, distance, min_dist, max_dist): if self._leftchild and distance - max_dist < self._median: yield self._leftchild if self._rightchild and distance + max_dist >= self._median: yield self._rightchild What I tried

问题 Is it possible to see the syntax error or runtime error line number (highlight also) generated after running the code in R studio? I searched the options but couldn't find. 回答1: First, have a look at ?traceback . There are many ways to debug R code/script. This is only one example. In RStudio, from the Debug drop down menu option On Error , choose Error Inspector for (what I think is) the easiest debug mode for finding the line number of an error/bug. You can also choose Break in Code to show

问题 I wanted to create automatic plot function by using following code: plotTimeSeries <- list(temp1,temp2) lapply(1:length(plotTimeSeries) , function(i) i$dt=strptime(i$dt, "%Y-%m-%d %H:%M:%S") ggplot(i, aes(dt, ambtemp)) + geom_line() + scale_x_datetime(breaks = date_breaks("2 hour"),labels=date_format("%H:%M")) + xlab("Time 00.00 ~ 24:00 (2007-09-29)") + ylab("Ambient Tempreture")+ opts(title = ("Node i"))) But I faced with the error below: Error: unexpected ')' in: " scale_x_datetime(breaks =

问题 I am getting the error "Uncaught SyntaxError: Unexpected token }" on index.php (line: 30) when i try and run certain functions of my web app (while other functions seem to work fine). I've slightly narrowed down the problem. The error seems to occur at the "<?php" opening tag (I found this because adding a line after this tag doesn't change the line the error is given for, but an extra line before the tag and the error is given for line: 31). I've put the code in note-pad++ to check for

问题 I have some code that I am trying to run in a Python shell (IDLE) but there seems to be a problem with the way I am parsing arguments in the Python shell. Here is the code: # import the necessary packages from skimage.segmentation import slic from skimage.segmentation import mark_boundaries from skimage.util import img_as_float from skimage import io import matplotlib.pyplot as plt import argparse # construct the argument parser and parse the arguments ap = argparse.ArgumentParser() ap.add

问题 I'm sorry for asking such a basic question here, but I'm getting a syntax error when trying to compile the following code, let sum_of_squares_of_two_largest x y z = let a :: b :: _ = List.sort (fun x y -> -(compare x y)) [x; y; z] in a * a + b * b; let rec factorial n = if n = 0 then 1 else n * factorial (n - 1); let e_term n = 1.0 /. float_of_int (factorial n); let rec e_approximation n = if n = 0 then (e_term 0) else (e_term n) +. (e_approximation (n - 1)); let rec is_even x = if x = 0 then

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I get this error and have tried all steps to eliminate it but can't, have also tried the steps demonstrated on stack overflow but to no avail: error: Parse error: syntax error, unexpected end of file in C:\wamp\www\project-Feedback form\project docs\login.php on line 80 I have attached the entire snippet of code

问题 How to fix this error? Type mismatch: cannot convert from element type Object to Block I see it at this line: for (Block b : blocksToSkip){ Here is the full code. @EventHandler(priority=EventPriority.NORMAL, ignoreCancelled=true) public void onEntityExplode(EntityExplodeEvent ev){ ArrayList blocksToSkip = new ArrayList(); Location rootLoc = ev.getLocation(); if (!SkyMagic.IsInIslandWorld(rootLoc)) return; for (Block b : ev.blockList()){ Location loc = b.getLocation(); IslandData data =

问题 Does someone know where this JavaScript error comes from? SyntaxError: expected expression, got '.' I get this error when using a regular expression with a slash (escaped) like el.href.match(/video\/(.*)@/)[1]; as a string passed to a function like createTextNode, textContent or innerHTML. This regex works when not stored as text. A regex without slash as text works, you can see my code example: HTML: <a style="display: none; width: 840px; height: 472px;" href="http://videos.francetv.fr/video

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I'm sorry for the extremely short question, but i don't even know why i have this error: Syntax error on token "println", = expected after this token In this code: static long start = System.currentTimeMillis(); public void testSort5() { Random random = new Random(); int number; int[] arr = new int[1000]; for