tree, return the number of nodes where the value of the node is equal to the sum of the values of its descendants...The sum is considered to be 0 if the node has no descendants....For the node with value 3: The sum of its descendants is 2+1 = 3....Example 3: Input: root = [0] Output: 1 For the node with value 0: The sum of its descendants is 0...since it has no descendants.
他有三个常量可供设置 FOCUS_BEFORE_DESCENDANTS ViewGroup本身先对焦点进行处理，如果没有处理则分发给child View进行处理 FOCUS_AFTER_DESCENDANTS...先分发给Child View进行处理，如果所有的Child View都没有处理，则自己再处理 FOCUS_BLOCK_DESCENDANTS ViewGroup本身进行处理，不管是否处理成功，都不会分发给...: case FOCUS_AFTER_DESCENDANTS: case FOCUS_BLOCK_DESCENDANTS:..., " + "FOCUS_AFTER_DESCENDANTS, FOCUS_BLOCK_DESCENDANTS"); }..., FOCUS_AFTER_DESCENDANTS, FOCUS_BLOCK_DESCENDANTS " + "but is " + descendantFocusability
if (getDescendantFocusability() == FOCUS_BLOCK_DESCENDANTS) { return; } // Unfocus..., FOCUS_AFTER_DESCENDANTS, FOCUS_BLOCK_DESCENDANTS " + "but is " + descendantFocusability...); } } 这里面的逻辑还是很清晰的，主要判断依据就是焦点拦截模式 descendantFocusability： FOCUS_BLOCK_DESCENDANTS：自身拦截掉焦点，直接对自己进行...requestFocus 调用去请求焦点； FOCUS_BEFORE_DESCENDANTS：自身优先子 View 获得焦点，先对自己进行 requestFocus 调用去请求焦点，如果失败再遍历子...View 让子 View 进行聚焦； FOCUS_AFTER_DESCENDANTS：先遍历子 View 让子 View 进行聚焦，如果子 View 都没有聚焦，则再对自己进行 requestFocus
"; // var data = XElement.Parse(xml).Descendants...("report"); var data = XElement.Parse(xml).Descendants("reports").Elements("report");...PatientsID = item.Element("PatientsID").Value, }); } Descendants...Descendants：按文档顺序返回经过筛选的此文档或元素的子代元素的集合； Elements：源集合中返回经过筛选的子集合元素的每个元素和 文档； 有什么区别呢，请参考博友的文章，通过两篇文章介绍，
console.log(links); let path = root.path(root.children[0].children[1]); console.log(path); let descendants...= root.descendants(); console.log("descendants: ", descendants); // 返回一个扁平的数组来表达root的子孙后代，而root.links...height", "100%"); d3.select('svg g.nodes') .selectAll('circle.node') .data(root.descendants
= FOCUS_BLOCK_DESCENDANTS) { ......= FOCUS_AFTER_DESCENDANTS // No focusable descendants || (focusableCount == views.size...} } 对于ViewGroup来说，遍历并添加自己的所有isFocusable的child 这里有个descendantFocusability变量，有三个取值 FOCUS_BEFORE_DESCENDANTS...：在所有子视图之前获取焦点 FOCUS_AFTER_DESCENDANTS： 在所有子视图之后获取焦点 FOCUS_BLOCK_DESCENDANTS： 阻止所有子视图获取焦点，即使他们是focusable...@Override public boolean dispatchKeyEvent(KeyEvent event) { // Let the focused view and/or our descendants
foreach (var paragraph in slidePart.Slide.Descendants(...)) { contentText.Length = 0; foreach (var text in paragraph.Descendants<DocumentFormat.OpenXml.Drawing.Text...foreach (var choice in slidePart.Slide.Descendants()) { foreach (var oleobject in choice.Descendants<DocumentFormat.OpenXml.Presentation.OleObject...foreach (DocumentFormat.OpenXml.Wordprocessing.Paragraph paragraph in body.Descendants
查询操作 使用 from 关键字指定 XML 文档，使用 where 关键字进行过滤，使用 select 关键字进行投影： var result = from element in xmlDocument.Descendants...element.Element("Title").Value; 2.2 方法语法 使用方法链式调用标准查询运算符，如 Where、Select、OrderBy 等： var result = xmlDocument.Descendants...XElement("Year", 1925)))); 2.5 删除元素 使用 LINQ to XML，您可以删除指定的 XML 元素： var bookToRemove = xmlDocument.Descendants...XDocument xmlDocument = XDocument.Parse(xml); var authors = from book in xmlDocument.Descendants
All non-positioned floating descendants, in tree order....All positioned, opacity or transform descendants, in tree order that fall into the following categories...: // All positioned descendants with 'z-index: auto' or 'z-index: 0', in tree order. // For those with...with opacity less than 1 // // All transform descendants with transform other than none for (const...Stacking contexts formed by positioned descendants with z-indices greater than or equal to 1 in z-index
{ XDocument doc = XDocument.Load("demo.xml"); var text = from t in doc.Descendants... XDocument xdoc= XDocument.Load(Server.MapPath("xxx.xml")); var ad = from a in xdoc.Descendants...XDocument adList = XDocument.Load(Server.MapPath("Data.xml")); var ad = from a in adList.Descendants
foreach (var paragraph in slidePart.Slide .Descendants...在 PPT 文本是放在形状里面 foreach (var text in paragraph.Descendants
具有以下功能，他们功能完全且被预加载: Node belongs to parent Node has many children Node has many ancestors Node has many descendants...Descendants 是一个父节点的所有子节点。 Ancestors和Descendants都可以预加载。...// Accessing ancestors $node->ancestors; // Accessing descendants $node->descendants; 通过自定义的查询加载ancestors...和descendants： $result = Category::ancestorsOf($id); $result = Category::ancestorsAndSelf($id); $result...// 获取后代的id $categories = $category->descendants()->pluck('id'); // 包含Category本身的id $categories[] = $category
XDocument SetNamespace(XDocument source, XNamespace xNamespace) { foreach (XElement xElement in source.Descendants...XNamespace target) { //First change the element name (and namespace) foreach (XElement xElement in source.Descendants...xElement.Name.LocalName; //Second, remove the default namespace attribute. foreach (XElement xElement in source.Descendants
contexts with negative stack levels (most negative first). the in-flow, non-inline-level, non-positioned descendants.... the non-positioned floats. the in-flow, inline-level, non-positioned descendants, including inline...tables and inline blocks. the child stacking contexts with stack level 0 and the positioned descendants
static final int descendantFocusability Defines the relationship between the ViewGroup and its descendants...Constant Value Description beforeDescendants 0 The ViewGroup will get focus before any of its descendants.... afterDescendants 1 The ViewGroup will get focus only if none of its descendants want it. blocksDescendants...2 The ViewGroup will block its descendants from receiving focus.
只有当其子类控件不需要获取焦点时才获取焦点 blocksDescendants：viewgroup会覆盖子类控件而直接获得焦点 代码处 visable.setDescendantFocusability(FOCUS_AFTER_DESCENDANTS...v) { if (fouces) { layout.setDescendantFocusability(FOCUS_AFTER_DESCENDANTS...layout.clearFocus(); //清除fouces layout.setDescendantFocusability(FOCUS_BLOCK_DESCENDANTS
时的焦点获取策略： public void setDescendantFocusability(int focusability) focusability可设置的值如下： FOCUS_BLOCK_DESCENDANTS...FOCUS_BEFORE_DESCENDANTS： 当ViewGroup调用requestFocus时总是优先让自己成为焦点视图。...FOCUS_AFTER_DESCENDANTS： 当ViewGroup调用requestFocus时优先让里面的子视图成为焦点，只有子视图无法成为焦点时才让自己成为焦点视图。这个特性也是默认特性。...解决的方案是把EditText的一个祖先视图也设置为可获取焦点的视图(setFocusable(true))，并且将这个祖先视图的setDescendantFocusability设置为FOCUS_BEFORE_DESCENDANTS
var slidePart = presentationPart.SlideParts.First(); var shape = slidePart.Slide.Descendants...().First(); var lineReference = shape.Descendants().First();
只显示其下面一层的节点及内容 print(soup.p.children)for i, child in enumerate(soup.p.children): print(i,child) 子孙节点：descendants...显示其下面一层的子孙节点及内容 print(soup.p.descendants)for i, child in enumerate(soup.p.descendants): print(i,
ClassName%>", Context); //TODO:设置参数 <% if(elements.Descendants...} } #endregion <% if(elements.Descendants...#region 绑定复选框组 <% var cbos = elements.Descendants... <% if(elements.Descendants...#region 绑定单选框组 <% var rdos = elements.Descendants
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