小编Axm*_*Axm的帖子

昨天我在生产过程中遇到了一个奇怪的错误.声明执行失败

if v_cursor%isopen then
  close v_cursor; -- here was an error 
end if;

经过一番挖掘,我发现问题出现在打开这个光标的子程序中.我通过在子程序中添加输出参数sys_refcursor来修复bug.为了澄清情况,请考虑以下测试代码:

procedure nested_test(test  number,
                        p_cur out sys_refcursor)
  is  
    procedure nested_procedure_fail is
    begin      
      open p_cur for
        select 1, 2, 3, 4
          from dual
         where 1 = 0;
    end;

    procedure nested_procedure_success(p_cur out sys_refcursor) is
    begin
      open p_cur for
        select 1, 2, 3, 4
          from dual
         where 1 = 0;
    end;

  begin
    if test = 1 then
      nested_procedure_fail;
    else
      if test = 2 then
        nested_procedure_success(p_cur => p_cur);
      else
        open p_cur …

我有无序列表,里面有两个浮动div.一个在左边,一个在右边.在Chrome中,我看到顶部有空白.在IE中一切似乎都很好.如何摆脱这个空白？

样式:

ul {
    margin: 1em;
}

li {
    width: 100%;
    padding: 0;
    margin: 0.5em;
    border: 1px black solid;
}

.clear {
    clear: both;
}

.left-item {
    float: left;
    background-color: red;
    padding: 1em;
}

.right-item {
    float: right;
    background-color: blue;
    padding: 1em;    
}

HTML代码:

<ul>
    <li>
        <div class="left-item">Item 1</div>
        <div class="right-item">Item 2</div>
        <div class="clear"></div>
    </li>
    <li>
        <div class="left-item">Item 1</div>
        <div class="right-item">Item 2</div>
        <div class="clear"></div>
    </li>
    <li>
        <div class="left-item">Item 1</div>
        <div class="right-item">Item 2</div>
        <div class="clear"></div>
    </li>
</ul>

样本小提琴:http://jsfiddle.net/38fdyvu6/1/ …