syntax-error

问题 I'm new to Standard ML and trying to write the following code fun whilestat test stmt1 = (fn x => if (test x) then (stmt1 x;whilestat test stmt1 ) else (x) ); The issue is that it gives me the following error w.sml:21.6-22.82 Error: right-hand-side of clause doesn't agree with function result type [circularity] expression: ('Z -> 'Y) -> 'Z -> 'Z result type: ('Z -> 'Y) -> 'Z in declaration: whilestat2 = (fn arg => (fn <pat> => <exp>)) uncaught exception Error raised at: ../compiler/TopLevel

问题 Here is the JSFidle to the problem: http://jsfiddle.net/LRTh3/36/ $('div.boxes').mousedown(function (event) { // Error on this line var inner_box = $(".box").is(":hover"); if ( inner_box == true ) { alert("blue,gree,pink was clicked"); } else alert("You mousedowned on the red box"); });​ console: Uncaught Error: Syntax error, unrecognized expression: hover Works if only one ".box" layer is presented. Is this a bug? How would I fix this? 回答1: $('div.boxes').mousedown(function (event) { //

问题 when I import some existing node.js code into the eclipse workspace, it complains with Syntax error on token "Invalid Character", delete this token on the #! /usr/bin/env/node hashbang line. How can I tell eclipse to ignore this error? 回答1: With Nodeclipse 0.7 and JSHint Integraton, it is now general question "How to configure JSHint" for that. see How to ignore node shebang error in Eclipse? 回答2: I have an answer to this question! Remove jsdt nature from your Eclipse .project file. Keep node

问题 Whenever I run sudo apache2 -S on my server it throws the following error: [Sun Mar 04 16:17:22.303217 2018] [core:warn] [pid 31405] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined [Sun Mar 04 16:17:22.303414 2018] [core:warn] [pid 31405] AH00111: Config variable ${APACHE_PID_FILE} is not defined [Sun Mar 04 16:17:22.303503 2018] [core:warn] [pid 31405] AH00111: Config variable ${APACHE_RUN_USER} is not defined [Sun Mar 04 16:17:22.303577 2018] [core:warn] [pid 31405] AH00111:

问题 I have recently began to check out Sencha Touch. In following there tutorials I have ran into some issues that I cannot seem to resolve. Some of the basic code in app.js that is provided from sencha runs fine. Others seem to get errors. For Example: new Ext.application({ name: "NotesApp", launch: function() { console.log("App Launch"); } }); With this I get an: Uncaught typeError: undefined is not a function If I rewrite the code without new at the beginning like: Ext.application({ name:

问题 I'm currently trying to set up my TableAdapters, but it doesn't allow me to use parameters (what makes it quite useless) - When I create a new Query SELECT users.* FROM users WHERE name LIKE @name It tells me there is a SQL-Error near '@' ... I'm using VS08 with C# and an Access-Database using OleDB-Driver 回答1: Look here: How to: Create Parameterized TableAdapter Queries When constructing a parameterized query, use the parameter notation specific to the database you are coding against. For

问题 I'm trying to modify the code of naive bayes classifier provided by the excellent book Programming Collective Intelligence, adapting it to the GAE datastore (the provided code uses pysqlite2). But trying to do it, I'm encountering an error difficult to debug. The error is this: File "C:\Users\CG\Desktop\Google Drive\Sci&Tech\projects\naivebayes\main.py", line 216, in post sampletrain(nb) File "C:\Users\CG\Desktop\Google Drive\Sci&Tech\projects\naivebayes\main.py", line 201, in sampletrain cl

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Why {} != ( {} ) in JavaScript? I tried it today and it threw me SyntaxError today and it made me wonder; what's wrong with this? {} === {} {} == {} What's wrong? 回答1: When { is the first token in a line, it's considered the start of block. { some(); statements(); here(); } And not an object literal. A block of code cannot be equal to anything, it's not an assignable thing. ({}) === {} That will set the parser

问题 Background I am used to strongly typed, compiled languages so I'm used to misspellings being pretty much instantly picked up as undeclared variables. However since Matlab is a weakly typed language this doesn't happen automatically and my development cycle tends to be: write function(s) | ˅ Run <------------------------- | | ˅ | Crash due to misspelling/typo | | | ˅ | Correct typo -----------------| The run process can run for several minutes before getting to the typo, which slows down my

问题 I'm getting errors (on X lines) in a jsp file but it all seems to be right. <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <form method="GET" X action="${pageContext.request.contextPath}/docreatetask"> <table> <tr> <td>Task</td> <td><input name="task" type="text" /></td> </tr> <tr> <td>Description</td> <td>