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Mediator Vs Observer Object-Oriented Design Patterns
I have been reading the Gang Of Four , in order to solve some of my problems and came across the Mediator pattern.
8 Ans...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...eed to wrap up a map with some other characteristics, perhaps some sort of ordered map, like a TreeMap.
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Why is Lisp used for AI? [closed]
...here. But I think Lisp was successful in AI research for three reasons (in order of importance):
Lisp is an excellent prototyping tool. It was the best for a very long time. Lisp is still great at tackling a problem you don't know how to solve yet. That description characterises AI perfectly.
Lisp...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
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#include "boost/multi_index/member.hpp"
#include "boost/multi_index/ordered_index.hpp"
using boost::multi_index_container;
using namespace boost::multi_index;
struct stu_num{}; // 索引-学号
struct stu_name{}; // 索引-姓名
struct stu_age{}; // 索引-年龄 ...
Where is PHP.ini in Mac OS X Lion? Thought it was in /usr/local/php5/lib
... on my Mac, uncommented httpd.conf, activated web sharing, installed MySQL etc.
I can't seem to find my PHP files, most importantly, PHP.ini.
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What is an Intent in Android?
...firstapp/starting-activity.html#BuildIntent
As the document describes, in order to start an activity (you also need to understand what activity is) use the intent like below
/** Called when the user clicks the Send button */
public void sendMessage(View view) {
Intent intent = new Intent(this,...
Easiest way to compare arrays in C#
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This only works if they are in the same order though
– John Demetriou
Feb 12 '16 at 7:00
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Why does Math.round(0.49999999999999994) return 1?
...ting, they took that bit out for Java 7 (the docs I linked to) -- maybe in order to avoid causing this sort of odd behavior by triggering a (further) loss of precision.
– T.J. Crowder
Mar 28 '12 at 7:46
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Html.DropdownListFor selected value not being set
... code has some conceptual issues:
First,
@Html.DropDownListFor(n => n.OrderTemplates, new SelectList(Model.OrderTemplates, "OrderTemplateId", "OrderTemplateName", 1), "Please select an order template")
When using DropDownListFor, the first parameter is the property where your selected value i...
Multiple Order By with LINQ [duplicate]
...You can use the ThenBy and ThenByDescending extension methods:
foobarList.OrderBy(x => x.Foo).ThenBy( x => x.Bar)
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