小编Mic*_*Mic的帖子

在UIScrollview中水平滚动时,如果我在同一方向快速滑动两次,滚动视图会猛烈跳跃.反正有没有阻止这种情况发生？为了详细解释,这里是一个来自scrollview的事件日志,在大多数委托方法中我只打印x坐标.

scrollViewWillBeginDragging:
    14:55:12.034 Will begin dragging!
    14:55:12.037 - Position -0.000000
scrollViewWillBeginDeceleration:
    14:55:12.129 Deceleration rate 0.998000
    14:55:12.152 + Position 314.000000
scrollViewWillBeginDragging:
    14:55:12.500 Will begin dragging!
    14:55:12.522 - Position 1211.000000
scrollViewWillBeginDeceleration:
    14:55:12.530 Deceleration rate 0.998000
    14:55:12.533 + Position 1389.000000
scrollViewDidScroll: (printing values < 0 && > 6000 (bounds.size.width)
    14:55:12.595 !!! Position 7819.000000
    14:55:12.628 !!! Position 9643.000000
    14:55:12.658 !!! Position 10213.000000
    14:55:12.688 !!! Position 10121.000000
    14:55:12.716 !!! Position 9930.000000
    ... contentoffset.x drops with around 400 each scrollviewdidscroll call ...
    14:55:13.049 !!! Position 6508.000000 …

给出一个块容器

<div>
 this is a very long string which contains a bunch of characters that I want to break at container edges.
</div>

是否有任何css属性,我可以设置为强制它在到达容器宽度时中断,无论字符串的内容如何,​​例如:

this is a ve
ry long stri
ng which ...

几乎是我想要的.现在,似乎总是喜欢打破空白字符或其他特殊字符(例如/).

我试图在我编写的Servlet中获取一些注入的上下文(例如Session或HttpServletRequest),在Grizzly上运行,但我做的任何事情似乎都没有用.整个过程似乎过早停顿,出现以下错误:

SEVERE: Missing dependency for field: javax.servlet.http.HttpServletRequest com.test.server.LolCat.hsr

服务器很简单,它由两个文件组成,静态入口点(Main.java):

package com.test.server;

import java.io.IOException;
import java.net.URI;
import javax.ws.rs.core.UriBuilder;

import org.glassfish.grizzly.http.server.HttpServer;
import com.sun.jersey.api.container.grizzly2.GrizzlyServerFactory;
import com.sun.jersey.api.core.ClassNamesResourceConfig;
import com.sun.jersey.api.core.ResourceConfig;

public class Main {

    private static URI getBaseURI() {
        return UriBuilder.fromUri("http://localhost/").port(8080).build();
    }

    public static final URI BASE_URI = getBaseURI();

    public static void main(String[] args) throws IOException {
        ResourceConfig rc = new ClassNamesResourceConfig(LolCat.class);
        HttpServer httpServer = GrizzlyServerFactory.createHttpServer(BASE_URI, rc);
        System.in.read();
        httpServer.stop();
    }
}

和serlvet(LolCat.java):

package com.test.server;

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.core.Context;

@Path(value = "/lol") …

我正在做一些模板元编程,大多只是编写我自己的编译时间列表,但我也有一些预处理器魔法,我想用它来使事情变得更容易.

我想要做的是创建一个编译器的编译时列表.这部分已经完成,但是用于简化创建(并添加到列表)的宏则不是.

简要举例:

template<typename Functor, typename Tail>
struct node {
    typedef Functor head;
    typedef Tail tail;
};


template <typename Functor, typename Tail>
struct push_back {
    typedef node<Functor, Tail> list;
};

struct unit0 {};

#define AUTO_FUNCTION(name) struct test_functor_##name {            \
    static void run_test();                                         \
};                                                                  \
typedef push_back<                                                  \
            test_functor_##name,                                    \
            CONCAT(unit, PP_DEC(__COUNTER__))                       \
        >::list CONCAT(unit, __COUNTER__);                          \
void test_functor_##name::run_test()


AUTO_FUNCTION(hello) {
    ...
}

现在,这是有效的,因为我为PP_DEC创建了一大组预处理器宏,即:

#define PP_DEC(x) PP_DEC_I(x)
#define PP_DEC_I(x) PP_DEC_ ## x
#define PP_DEC_1 0
#define PP_DEC_2 1
...
#define …

我需要帮助制作一个带有函数的c ++程序,该函数使用int Disc(int A, int B, int C)并计算返回B*B-4*A*C并使用程序中的函数Disc .....到目前为止我有这个.

void main(){
     cout << Disc(a,b,c);
}