break

1、java不准许将一个数字作为布尔值。 2、区分break和continue continue跳过一次循环，break跳出整个循环 continue跳到循环顶部的行为会使得i值递增，break从循环块外的下一句开始执行，不会有i值递增 　　　　实例： public class BreakAndContiniue { public static void main(String[] args) { int i; for(i = 0; i < 10; i++) { if(i == 9) break; } System.out.println("break_i = " + i); for(i = 0; i < 10; i++) { if(i == 9) continue; } System.out.println("continue_i = " + i); } } 结果：break_i = 9 　　　continue_i = 10 　带标签continue会跳到，标签所属循环顶部开始下一次循环；但是，break会直接跳出标签所属循环 实例： public class BreakAndContinue2 { public static void main(String[] args) { // TODO Auto-generated method stub int count = 0;

In Kotlin, I cannot do a break or continue within a function loop and my lambda -- like I can from a normal for loop. For example, this does not work: (1..5).forEach { continue@forEach // not allowed, nor break@forEach } There are old documentation that mentions this being available but it appears it was never implemented. What is the best way to get the same behavior when I want to continue or break from within the lambda? Note: this question is intentionally written and answered by the author ( Self-Answered Questions ), so that the idiomatic answers to commonly asked Kotlin topics are

I am using the R package foreach() with %dopar% to do long (~days) calculations in parallel. I would like the ability to stop the entire set of calculations in the event that one of them produces an error. However, I have not found a way to achieve this, and from the documentation and various forums I have found no indication that this is possible. In particular, break() does not work and stop() only stops the current calculation, not the whole foreach loop. Note that I cannot use a simple for loop, because ultimately I want to parallelize this using the doRNG package. Here is a simplified,

I am having an issue: I am running a loop to process multiple files. My matrices are enormous and therefore I often run out of memory if I am not careful. Is there a way to break out of a loop if any warnings are created? It just keeps running the loop and reports that it failed much later... annoying. Any ideas oh wise stackoverflow-ers?! You can turn warnings into errors with: options(warn=2) Unlike warnings, errors will interrupt the loop. Nicely, R will also report to you that these particular errors were converted from warnings. j <- function() { for (i in 1:3) { cat(i, "\n") as.numeric(c

I have a foreach loop and an if statement. If a match is found i need to ultimately break out of the foreach. foreach($equipxml as $equip) { $current_device = $equip->xpath("name"); if ( $current_device[0] == $device ) { // found a match in the file $nodeid = $equip->id; <break out of if and foreach here> } } if is not a loop structure, so you cannot "break out of it". You can, however, break out of the foreach by simply calling break . In your example it has the desired effect: foreach($equipxml as $equip) { $current_device = $equip->xpath("name"); if ( $current_device[0] == $device ) { //

I recently read this question which had a solution about labeling loops in Java. I am wondering if such a loop-naming system exists in Python. I have been in a situation multiple times where I do need to break out of an outer for loop from an inner for loop. Usually, I solve this problem by putting the inner loop in a function that returns (among others) a boolean which is used as a breaking condition. But labeling loops for breaking seems a lot simpler and I would like to try that, if such functionality exists in python Does anyone know if it does? There was a proposal to include named loops

This question already has an answer here: How to add a newline (line break) in XML file? 1 answer I'm a beginner in web development, and I'm trying to insert line breaks in my XML file. This is what my XML looks like: <musicpage> <song> <title>Song Title</title> <lyric>Lyrics</lyric> </song> <song> <title>Song Title</title> <lyric>Lyrics</lyric> </song> <song> <title>Song Title</title> <lyric>Lyrics</lyric> </song> <song> <title>Song Title</title> <lyric>Lyrics</lyric> </song> </musicpage> I want to have line breaks in between the sentences for the lyrics. I tried everything from /n, and

Can you confirm if the next break cancels the inner for loop? for (out in 1:n_old){ id_velho <- old_table_df$id[out] for (in in 1:n) { id_novo <- new_table_df$ID[in] if(id_velho==id_novo) { break }else if(in == n) { sold_df <- rbind(sold_df,old_table_df[out,]) } } } Well your code is not reproducable so we never know for sure, but this is what help('break') says: break breaks out of a for, while or repeat loop; control is transferred to the first statement outside the inner-most loop. So yes, break only breaks the current loop. You can also see it in action with e.g.: for (i in 1:10) { for (j

In my code I have a for loop that iterates through a method of code until it meets the for condition. Is there anyway to break out of this for loop? So if we look at the code below, what if we want to break out of this for loop when we get to "15"? public class Test { public static void main(String args[]) { for(int x = 10; x < 20; x = x+1) { System.out.print("value of x : " + x ); System.out.print("\n"); } } } Outputs: value of x : 10 value of x : 11 value of x : 12 value of x : 13 value of x : 14 value of x : 15 value of x : 16 value of x : 17 value of x : 18 value of x : 19 I've tried the