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Difference between this and self in self-type annotations?

In various Scala literature I see some self-type annotations using "this" and others using "self": 2 Answers ...
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Set a default parameter value for a JavaScript function

...ments which I set a default on, which get used if the value isn't defined (and ignored if the value is passed). In Ruby you can do it like this: ...
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离线版启动超时,有报错日志 - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!

web服务启动报错: Picked up JAVA_TOOL_OPTIONS: "-Dfile.encoding=UTF-8" Executing [D:\appinventor\AppInventor2\resources\app.asar.unpacked\OpenJDK\bin\java, --add-opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.ne...
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How to run an EXE file in PowerShell with parameters with spaces and quotes

How do you run the following command in PowerShell? 19 Answers 19 ...
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Developing for Android in Eclipse: R.java not regenerating

...sn't contain information about my new resources, so I decided to delete it and thought that Eclipse would generate a new one. But that didn't happen, and I don't have R.java now. How can I regenerate one? ...
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abort, terminate or exit?

What's the difference between those three, and how shall I end program in case of exception which I can't handle properly? ...
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Set custom HTML5 required field validation message

...sign a function, it can accept a reference to the input element (DOM node) and it must return a string which is then displayed as the error message. Compatibility Tested in: Chrome Canary 47.0.2 IE 11 Microsoft Edge (using the up-to-date version as of 28/08/2015) Firefox 40.0.3 Opera 31.0 Ol...
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What's the difference between TRUNCATE and DELETE in SQL

What's the difference between TRUNCATE and DELETE in SQL? 32 Answers 32 ...
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Creating Multifield Indexes in Mongoose / MongoDB

...xes in Mongoosejs. In particular I have two fields that need to be indexed and unique. What is an example mongoose schema that indexes two fields together? ...
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validation custom message for rails 3

... edited Mar 4 '15 at 3:20 Andrew Hendrie 5,08722 gold badges3434 silver badges6262 bronze badges answered Mar 22 '11 at 4:33 ...