大约有 40,000 项符合查询结果（耗时：0.0653秒） [XML]
When to use margin vs padding in CSS [closed]
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TL;DR: By default I use margin everywhere, except when I have a border or background and want to increase the space inside that visible box.
To me, the biggest difference between padding and margin is that vertical margins auto-collapse, a...
How to handle both a single item and an array for the same property using JSON.net
...erty that can vary between a single item and an array, define it as a List<string> and mark it with a [JsonConverter] attribute so that JSON.Net will know to use the custom converter for that property. I would also recommend using [JsonProperty] attributes so that the member properties can b...
Positioning a div near bottom side of another div
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Tested and working on Firefox 3, Chrome 1, and IE 6, 7 and 8:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html><body>
<div style='background-color: yellow; width: 70%;
height: 100px; po...
JPA : How to convert a native query result set to POJO class collection
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JPA provides an SqlResultSetMapping that allows you to map whatever returns from your native query into an Entity or a custom class.
EDIT JPA 1.0 does not allow mapping to non-entity classes. Only in JPA 2.1 a ConstructorResult has been added to m...
How do I use a PriorityQueue?
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Use the constructor overload which takes a Comparator<? super E> comparator and pass in a comparator which compares in the appropriate way for your sort order. If you give an example of how you want to sort, we can provide some sample code to implement the comparator if yo...
How to initialize a vector in C++ [duplicate]
...cial flags to be enabled on your compiler) you can simply do:
std::vector<int> v { 34,23 };
// or
// std::vector<int> v = { 34,23 };
Or even:
std::vector<int> v(2);
v = { 34,23 };
On compilers that don't support this feature (initializer lists) yet you can emulate this with a...
Reading Xml with XmlReader in C#
...me sample code (adapted slightly from this blog post):
static IEnumerable<XElement> SimpleStreamAxis(string inputUrl,
string elementName)
{
using (XmlReader reader = XmlReader.Create(inputUrl))
{
reader.MoveToContent();
while (reader.R...
Android: textColor of disabled button in selector not showing?
...reate another XML file in res\color named something like text_color.xml.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- disabled state -->
<item android:state_enabled="false" android:color="#9D9FA2" />
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The Role Manager feature has not been enabled
...from the enabled attribute of the roleManager element in the web.config:
<configuration>
<system.web>
<roleManager enabled="true" />
</system.web>
</configuration>
Update:
For more information, check out this MSDN sample: https://msdn.microsoft.com/en-us/li...
Elegant way to combine multiple collections of elements?
... collections, each containing objects of the same type (for example, List<int> foo and List<int> bar ). If these collections were themselves in a collection (e.g., of type List<List<int>> , I could use SelectMany to combine them all into one collection.
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