labeled-statements

Label can only be used as part of a statement Error

由 六眼飞鱼酱① 提交于 2020-12-02 06:47:08
问题 I have been looking through the forums but I have not found an answer to this question that applies to my situation. I am trying to make a system call to using 'sort' (unix), however, I receive an error saying, "a label can only be part of a statement and a declaration is not a statement." Here is the code causing the error. int processid; switch(processid = fork()){ //establishing switch statement for forking of processes. case -1: perror("fork()"); exit(EXIT_FAILURE); break; case 0: char

Label can only be used as part of a statement Error

由 与世无争的帅哥 提交于 2020-12-02 06:42:24
问题 I have been looking through the forums but I have not found an answer to this question that applies to my situation. I am trying to make a system call to using 'sort' (unix), however, I receive an error saying, "a label can only be part of a statement and a declaration is not a statement." Here is the code causing the error. int processid; switch(processid = fork()){ //establishing switch statement for forking of processes. case -1: perror("fork()"); exit(EXIT_FAILURE); break; case 0: char

Javascript Conflicting Syntax Between Function As Object Key And Labeled Function in Block

由 最后都变了- 提交于 2019-12-12 16:43:43
问题 Assuming you have a browser that supports both labeled function declarations and block statements, what is the standard way/method for browsers to determine if the following is an object with a property named L that is function F , or a block that contains function F labeled as L : { L: function F(){} } E.g. To expose what I mean, here are two different copies of the above code modified to expose it as an array and as a function: document.body.textContent = typeof( () => { L: function F(){} }

Please explain the usage of Labeled Statements

由 穿精又带淫゛_ 提交于 2019-11-27 01:54:18
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 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 are used with break ( §14.15 ) or continue ( §14.16 ) statements appearing anywhere within the labeled

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

“loop:” in Java code. What is this, and why does it compile?

由 空扰寡人 提交于 2019-11-25 22:48:48
问题 This code just made me stare at my screen for a few minutes: loop: for (;;) { // ... } (line 137 here) I have never seen this before, and I had no idea Java has a \"loop\" keyword (NetBeans doesn\'t even color it like a keyword), and it does compile fine with JDK 6. What is the explanation? 回答1: It is not a keyword it is a label . Usage: label1: for (; ; ) { label2: for (; ; ) { if (condition1) { // break outer loop break label1; } if (condition2) { // break inner loop break label2; } if
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