在主要浏览器中是否确保以下脚本标记始终按顺序和按声明顺序执行？即我应该假设以下代码不会总是在警报中产生x =='ab'？
<head>
<script type="text/javascript">
//tag A
var x = x || ''; x += 'a';
</script>
<script type="text/javascript">
//tag B
var x = x || ''; x += 'b';
</script>
</head>
<body>
<script type="text/javascript">
alert('x='+x);
<script>
</body>
...而x可能会成为以下之一:
我在Visual Studio中有一个项目.我如何找出它适用于哪个.NET Framework版本？
当我运行这个我在printf上得到segv时,我做错了什么？
int main() {
char **bla;
int size =10;
int i;
bla = calloc(size*size,sizeof(char *));
for(i=0;i<size;i++) {
*bla = calloc(10,sizeof(char));
strncpy(*bla,"aaaaa",size);
bla++;
}
printf("%s\n",bla[0]);
}
我知道我可以这样做
int main() {
char **bla;
int size =10;
int i;
bla = calloc(size*size,sizeof(char *));
for(i=0;i<size;i++) {
bla[i] = calloc(10,sizeof(char));
strncpy(bla[i],"aaaaa",size);
}
printf("%s\n",bla[0]);
}
但有没有办法用指针做到这一点？
我需要比较使用相同编译器/标志编译的2个可执行文件和/或共享对象,并验证它们没有更改.我们在受监管的环境中工作,因此对于测试目的而言,确切地隔离可执行文件的哪些部分已经发生变化非常有用.
由于包含有关文件信息的标头,因此使用MD5Sums/Hashes不起作用.
有没有人知道一个程序或方法来验证2个文件是否在执行上是相同的,即使它们是在不同的时间构建的？
是否有可能格式化MS Chart Control图表,轴标签是在主要/次要刻度标记之间呈现的？
例如:在X轴上
| | | x | |
| x | x | | |
| | | | x |
+-------+-------+-------+-------+
1/1 2/1 3/1 4/1
而不是默认:
| | | x |
| x x | |
| | | | x
+-------+-------+-------+-------+----
1/1 2/1 3/1 4/1
我是C#的新手,需要从C#中检索网址.大多数情况下它工作正常,但在一个案例中它会引发错误.网址如下:http: //whois.afrinic.net/cgi-bin/whois？searchtext = 41.132.178.138
错误是:
url的HTTP请求中的异常:http://whois.afrinic.net/cgi-bin/whois？searchtext = 41.132.178.138远程服务器返回错误:(403)Forbidden.
我的代码是
void MyFUnction(string url)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = ".NET Framework Test Client";
request.ContentType = "application/x-www-form-urlencoded";
Logger.WriteMyLog("application/x-www-form-urlencoded");
// execute the request
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// we will read data via the response stream
Stream resStream = response.GetResponseStream();
string tempString = null;
int count = 0;
do
{
// fill the buffer with data
count = resStream.Read(buf, 0, buf.Length);
// make sure we read some data …是否有可能创建这样一个内部和外部阴影的UILabel？
alt text http://dl.getdropbox.com/u/80699/Bildschirmfoto%202010-07-12%20um%2021.28.57.png
我只知道shadowColor和shadowOffset
缩放:
alt text http://dl.getdropbox.com/u/80699/Bildschirmfoto%202010-07-12%20um%2021.39.56.png
谢谢!
我在Ruby中搞砸了一些.我有一个包含两个方法的类的文件和以下代码:
if __FILE__ == $0
seq = NumericSequence.new
puts "\n1. Fibonacci Sequence"
puts "\n2. Pascal\'s Triangle"
puts "\nEnter your selection: "
choice = gets
puts "\nExcellent choice."
choice = case
when 1
puts "\n\nHow many fibonacci numbers would you like? "
limit = gets.to_i
seq.fibo(limit) { |x| puts "Fibonacci number: #{x}\n" }
when 2
puts "\n\nHow many rows of Pascal's Triangle would you like?"
n = gets.to_i
(0..n).each {|num| seq.pascal_triangle_row(num) \
{|row| puts "#{row} "}; puts "\n"}
end
end
为什么我运行代码并提供选项2,它仍然运行第一个案例？
我正在尝试将spring与hibernate集成,但是捕获NamingException:Context是只读的
堆栈跟踪
WARNING: Could not bind factory to JNDI
javax.naming.NamingException: Context is read only
at org.apache.naming.NamingContext.checkWritable(NamingContext.java:903)
at org.apache.naming.NamingContext.createSubcontext(NamingContext.java:517)
at org.apache.naming.NamingContext.createSubcontext(NamingContext.java:538)
at org.apache.naming.SelectorContext.createSubcontext(SelectorContext.java:422)
at javax.naming.InitialContext.createSubcontext(InitialContext.java:464)
at org.hibernate.util.NamingHelper.bind(NamingHelper.java:69)
at org.hibernate.impl.SessionFactoryObjectFactory.addInstance(SessionFactoryObjectFactory.java:90)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:306)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1300)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:855)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:774)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1460)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1398)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:540)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:842)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:416)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:261)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:192)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) ….net ×2
c# ×2
java ×2
browser ×1
c ×1
comparison ×1
executable ×1
hibernate ×1
iphone ×1
javascript ×1
objective-c ×1
ruby ×1
spring ×1
syntax ×1
uilabel ×1
version ×1