break

break out of if and foreach

由 拈花ヽ惹草 提交于 2019-11-26 18:48:33
问题 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> } } 回答1: 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(

Line Break in XML? [duplicate]

由 断了今生、忘了曾经 提交于 2019-11-26 18:23:35
问题 This question already has an answer here : How to add a newline (line break) in XML file? (1 answer) Closed last year . 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> <

Breaking out of a for loop in Java [closed]

由 不问归期 提交于 2019-11-26 18:07:42
问题 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

How do I break out of a loop in Perl?

由 时光毁灭记忆、已成空白 提交于 2019-11-26 17:55:14
问题 I'm trying to use a break statement in a for loop, but since I'm also using strict subs in my Perl code, I'm getting an error saying: Bareword "break" not allowed while "strict subs" in use at ./final.pl line 154. Is there a workaround for this (besides disabling strict subs)? My code is formatted as follows: for my $entry (@array){ if ($string eq "text"){ break; } } 回答1: Oh, I found it. You use last instead of break for my $entry (@array){ if ($string eq "text"){ last; } } 回答2: Additional

Is it bad practice to use break to exit a loop in Java? [closed]

由 倖福魔咒の 提交于 2019-11-26 17:39:38
问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . I was wondering if it is a "bad practice" to use a break statement to exit a loop instead of fulfilling the loop condition? I do not have enough insight in Java and the JVM to know how a loop is handled, so I was wondering if I was overlooking something critical by doing so.

Please explain the usage of Labeled Statements

由 白昼怎懂夜的黑 提交于 2019-11-26 17:29:07
问题 Is breaking and continuing the only uses of labeled statements in Java? When have you used Labeled Statements in your programs? Sorry the code snippet has been deleted. I am splitting the question 回答1: JLS 14.7 Labeled statements (edited for clarity) Statements may have label prefixes ( Identifier : Statement ). The Identifier is declared to be the label of the immediately contained Statement . Unlike C and C++, the Java programming language has no goto statement; identifier statement labels

Break out of a while loop that contains a switch statement

由 半腔热情 提交于 2019-11-26 17:28:18
问题 I am having trouble figuring out how to break out of a loop that contains a switch statement. Break breaks out of the switch, not the loop. There is probably a more elegant solution to this. I have implemented a flag that starts out as true and gets set to false and ends the loop. Can you offer a better solution? Background: this code is used in a bar code workflow system. We have PocketPCs that have bar code scanners built in. This code is used in one of those functions. It prompts the user

Naming Loops in Python

由 不问归期 提交于 2019-11-26 17:11:42
问题 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

Difference between break and continue statement

由 北战南征 提交于 2019-11-26 15:40:35
Can anyone tell me the difference between break and continue statements? Xn0vv3r break leaves a loop, continue jumps to the next iteration. Jay See Branching Statements for more details and code samples: break The break statement has two forms: labeled and unlabeled. You saw the unlabeled form in the previous discussion of the switch statement. You can also use an unlabeled break to terminate a for, while, or do-while loop [...] An unlabeled break statement terminates the innermost switch, for, while, or do-while statement, but a labeled break terminates an outer statement. continue The

How can I use break or continue within for loop in Twig template?

由 我们两清 提交于 2019-11-26 15:27:26
问题 I try to use a simple loop, in my real code this loop is more complex, and I need to break this iteration like: {% for post in posts %} {% if post.id == 10 %} {# break #} {% endif %} <h2>{{ post.heading }}</h2> {% endfor %} How can I use behavior of break or continue of PHP control structures in Twig? 回答1: From docs TWIG docs: Unlike in PHP, it's not possible to break or continue in a loop. But still: You can however filter the sequence during iteration which allows you to skip items. Example
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