break

c# exit generic ForEach that use lambda

由 旧巷老猫 提交于 2019-12-08 17:48:48
问题 Does anyone know if it is possible to exit a generic ForEach that uses lambda? e.g. someList.ForEach(sl => { if (sl.ToString() == "foo") break; // continue processing sl here // some processing code } ); This code itself won't compile. I know I could use a regular foreach but for consistency I want to use lambda. Many thanks. 回答1: Sure. But first, note that I recommend against this; I say that a sequence operator should not have a side effect, and a statement should have a side effect. If you

Breaking out of JavaScript 'For' Loop using False?

由 半世苍凉 提交于 2019-12-08 08:22:44
问题 I didn't know this was possible (is it?) The below code apparently logs values 1 to 5, then breaks out of the 'for' loop, because the 'false' value is returned. function x() { for (var i = 0; i < 10; i++) { console.log(i); if (i == 5) return false; } return true } console.log(x()); My question is: How come the for loop short-circuits when 'false' is returned? I looked at MDN but there is nothing there about using 'false' to break out of the for loop. Also tried looking at ECMA specs, but

Create XML file with linebreaks [duplicate]

由 故事扮演 提交于 2019-12-08 07:44:54
问题 This question already has answers here : How to add a carriage return to XML output in Java (3 answers) Closed 5 years ago . I referred to the following tutorial to create XML file using JAVA. http://www.mkyong.com/java/how-to-create-xml-file-in-java-dom/ However, when I open the xml file, it appears in 1 extremely long single line. This makes it very hard for me to verify the result, and I am sure it is possible to have linebreaks for every element tag. But I do not have any clue how to do

SQL Data Range Min Max category

由 半城伤御伤魂 提交于 2019-12-07 22:25:40
问题 I want to determine the range of 2 categories. Category A and Category B. A starts from 1 to 15, B starts from 16 to 31 then A Again starts from 32 to 40. Now If run this query select min(range), max(range) from table group by category order by category it gives me Range of category A from 1 to 40 and Category B from 16 to 31. I want to break the Range and want to see the results Category A 1 to 15 Category B 16 to 31 Category A 32 to 40 How do I do that? Do I need a 3rd column? I know if i

Breaking a parent function from within a child function (PHP Preferrably)

由 南笙酒味 提交于 2019-12-07 06:50:18
问题 I was challenged how to break or end execution of a parent function without modifying the code of the parent, using PHP I cannot figure out any solution, other than die(); in the child, which would end all execution, and so anything after the parent function call would end. Any ideas? code example: function victim() { echo "I should be run"; killer(); echo "I should not"; } function killer() { //code to break parent here } victim(); echo "This should still run"; 回答1: function victim() { echo

Visual Studio 2015 unexpectedly breaking on handled exceptions

由 允我心安 提交于 2019-12-07 05:37:17
问题 An image being worth a lot of words, how is the following possible: As can be seen, Visual Studio 2015 (latest version) breaks while Common Language Runtime Exceptions under Exception Settings is unchecked, Enable Just My Code under Tools > Options > Debugging is checked, and the exception is clearly handled (within a try/catch block). The line failing and causing the break is a call to an external API (which is somewhat buggy, hence the try/catch block). Am I missing something that would

PowerShell: break nested loops

由 寵の児 提交于 2019-12-06 23:49:28
问题 There should be a break command in PowerShell that can exit nested loops by assigning a label. Just it doesn't work. Here's my code: $timestampServers = @( "http://timestamp.verisign.com/scripts/timstamp.dll", "http://timestamp.comodoca.com/authenticode", "http://timestamp.globalsign.com/scripts/timstamp.dll", "http://www.startssl.com/timestamp" ) :outer for ($retry = 2; $retry -gt 0; $retry--) { Write-Host retry $retry foreach ($timestampServer in $timestampServers) { Write-Host

SQL Data Range Min Max category

由 旧城冷巷雨未停 提交于 2019-12-06 10:11:10
I want to determine the range of 2 categories. Category A and Category B. A starts from 1 to 15, B starts from 16 to 31 then A Again starts from 32 to 40. Now If run this query select min(range), max(range) from table group by category order by category it gives me Range of category A from 1 to 40 and Category B from 16 to 31. I want to break the Range and want to see the results Category A 1 to 15 Category B 16 to 31 Category A 32 to 40 How do I do that? Do I need a 3rd column? I know if i have 3rd column with new categories lets say C D E respectively, I can group by those and get the

C Primer Plus 第7章 C控制语句：分支和跳转 7.6 continue和break

由 我的梦境 提交于 2019-12-06 05:49:53
7.6.1 continue语句 该语句可以用于三种循环形式 。 当运行到该语句时， 它将导致剩余的迭代部分被忽略，并开始下一次的迭代。 如果continue语句处于嵌套结构中，它仅仅影响它的最里层的结构。 程序清单7.9 skippart.c /*skippart.c--使用continue跳过部分循环*/ #include <stdio.h> int main (void) { const float MIN = 0.0f; const float MAX = 100.0f; float score; float total = 0.0f; int n = 0; float min = MAX; float max = MIN; printf("Enter the first score (q to quit):"); while(scanf("%f",&score)==1) { if(score<MIN || score>MAX) { printf("%0.1f is an invalid value.Try again:",score); continue; } printf("Accepting %0.1f: \n",score); min = (score<min)?score:min; max = (score>max)?score:max; total +=

Break out of an _.each loop

由 会有一股神秘感。 提交于 2019-12-06 04:10:40
问题 Is it possible to break out of an underscore each loop..? _.each(obj, function(v,i){ if(i > 2){ break // <~ does not work } // some code here // ... }) Is there another design pattern I can be using? 回答1: I don't think you can, so you will just have to wrap the contents of the function in i < 2 or use return . It may make more sense to use .some or .every . EDIT: //pseudo break _.each(obj, function (v, i) { if (i <= 2) { // some code here // ... } }); The issue with the above is of course
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