我有一个使用gwt-maven-archetype构建的Maven项目.虽然它与mvn gwt:run目标运行完美,但是当我尝试在tomcat7容器中运行它时,mvn tomcat:run或者mvn gwt:compile && mvn tomcat:run它没有加载GWT动态创建的小部件.
根据谷歌Chrome控制台,它找不到该*.nocache.js文件,即使在/target/文件夹中它确切地位于预期的位置.
我目前正在尝试在入口点模块中显示一个简单的"Hello"标签:
public class Hello implements EntryPoint {
public void onModuleLoad() {
Label hello = new Label("TESTESTSTSTS");
RootPanel.get("helloContainer").add(hello);
}
}
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link type="text/css" rel="stylesheet" href="veltisto.css">
<title>Web Application Starter Project</title>
<script type="text/javascript" language="javascript" src="veltisto/veltisto.nocache.js"></script>
</head>
<body>
<iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' style="position:absolute;width:0;height:0;border:0"></iframe>
<noscript>
<div style="width: 22em; position: absolute; left: 50%; margin-left: -11em; color: red; background-color: white; border: 1px …我正在使用带有money-rails gem的Rails来处理钱列.
有没有办法防止出现浮点错误？(即使是黑客也会这样做,我只是想确保没有这样的错误呈现给最终用户)
Rspec示例案例:
it "correctly manipulates simple money calculations" do
# Money.infinite_precision = false or true i've tried both
start_val = Money.new("1000", "EUR")
expect(start_val / 30 * 30).to eq start_val
end
结果
Failure/Error: expect(start_val / 30 * 30).to eq start_val
expected: #<Money fractional:1000.0 currency:EUR>
got: #<Money fractional:999.99999999999999999 currency:EUR>
(compared using ==)
Diff:
@@ -1,2 +1,2 @@
-#<Money fractional:1000.0 currency:EUR>
+#<Money fractional:999.99999999999999999 currency:EUR>