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Why can't I see the “Report Data” window when creating reports?
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After I accidentally closed this window, I took an hour to find how to bring it back up.
The right answer is indeed:
View-->Report Data (ctrl+alt+D)
The tricky part: the 'Report Data' entry does not always appear in the 'View' dropdown...
JavaScript: Class.method vs. Class.prototype.method
... are extending the constructor function prototype, it will be available to all the object instances created with the new keyword, and the context within that function (the this keyword) will refer to the actual object instance where you call it.
Consider this example:
// constructor function
funct...
App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...览现代Web前端页面，由中文网更新及维护，基于开源项目开发。
原生 Web浏览器 组件无法正常浏览部分现代Web页面，无法浏览带端口url的页面，这款拓展统统解决。
.aix 拓展下载：
cn.fun123.CustomWebView.aix
基础使用方法：
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NoSQL - MongoDB vs CouchDB [closed]
...~2.5Gb
Text search integrated
GridFS to store big data + metadata (not actually an FS)
Data center aware
Best used: If you need dynamic queries. If you prefer to define indexes, not map/reduce functions. If you need good performance on a big DB. If you wanted CouchDB, but your data changes too muc...
Database sharding vs partitioning
...databases. Sharding is one specific type of partitioning, part of what is called horizontal partitioning.
Here you replicate the schema across (typically) multiple instances or servers, using some kind of logic or identifier to know which instance or server to look for the data. An identifier of th...
Design Patterns: Factory vs Factory method vs Abstract Factory
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All three Factory types do the same thing: They are a "smart constructor".
Let's say you want to be able to create two kinds of Fruit: Apple and Orange.
Factory
Factory is "fixed", in that you have just one implementation ...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
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I usually use getReference method when i do not need to access database state (I mean getter method). Just to change state (I mean setter method). As you should know, getReference returns a proxy object which uses a powerful featu...
Requirejs domReady plugin vs Jquery $(document).ready()?
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It seems like all the key points were already hit, but a few details fell through the cracks. Mainly:
domReady
It is both a plugin and a module. If you include it in the the requirements array w/ a trailing ! your module won't execute un...
Where to learn about VS debugger 'magic names'
If you've ever used Reflector, you probably noticed that the C# compiler generates types, methods, fields, and local variables, that deserve 'special' display by the debugger. For instance, local variables beginning with 'CS$' are not displayed to the user. There are other special naming conventions...
Hash function that produces short hashes?
...m that's strong against intentional modification, I've found an algorithm called adler32 that produces pretty short (~8 character) results. Choose it from the dropdown here to try it out:
http://www.sha1-online.com/
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