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MongoDB relationships: embed or reference?
I'm new to MongoDB--coming from a relational database background. I want to design a question structure with some comments, but I don't know which relationship to use for comments: embed or reference ?
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Omitting the second expression when using the if-else shorthand
Can I write the if else shorthand without the else ?
8 Answers
8
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What is a raw type and why shouldn't we use it?
....class, not List<String>.class
instanceof operand, e.g. o instanceof Set, not o instanceof Set<String>
See also
Why is Collection<String>.class Illegal?
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Install an apk file from command prompt?
I want to install a file using the Windows command line. First I want to build after compiling all the .jar files to create an .apk file for an Android application without using Eclipse.
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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...ArrayReceived
其他方法
IsNull
ToDictionary / FromDictionary
错误处理
MQTT服务质量（QoS）：3个等级
保留消息（RetainFlag）
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C# namespace alias - what's the point?
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That is a type alias, not a namespace alias; it is useful to disambiguate - for example, against:
using WinformTimer = System.Windows.Forms.Timer;
using ThreadingTimer = System.Threading.Timer;
(ps: thanks for the choice of Timer ;-p)
Otherwise, if you use both System.Window...
Ruby 2.0.0p0 IRB warning: “DL is deprecated, please use Fiddle”
I just uninstalled my older versions of Ruby, removed all of my gems
(including Rails), and installed Ruby 2.0. In other words, a totally clean re-install. Upon starting IRB, I received this message:
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Java: Get last element after split
I am using the String split method and I want to have the last element.
The size of the Array can change.
12 Answers
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Determine .NET Framework version for dll
I have an old dll that was compiled against the .NET framework and deployed. I am not sure which version of the .NET framework it was compiled against. I am wondering how I can determine which version of the .NET framework this dll was compiled against? I cannot trust the source code because I be...
Most used parts of Boost [closed]
When I discovered boost::lexical_cast I thought to myself "why didn't I know about this sooner!" - I hated having to write code like
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