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What does the `#` operator mean in Scala?
...4c8
scala> a2.f(new a1.B)
<console>:11: error: type mismatch;
found : a1.B
required: a2.B
a2.f(new a1.B)
^
When you declare a class inside another class in Scala, you are saying that each instance of that class has such a subclass. In other words, the...
Pry: show me the stack
Using Pry in Rails, when I hit a breakpoint in the code
binding.pry
5 Answers
5
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What's the difference between “Request Payload” vs “Form Data” as seen in Chrome dev tools Network t
I have an old web application I have to support (which I did not write).
2 Answers
2
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How to convert java.sql.timestamp to LocalDate (java8) java.time?
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You can do:
timeStamp.toLocalDateTime().toLocalDate();
Note that timestamp.toLocalDateTime() will use the Clock.systemDefaultZone() time zone to make the conversion. This may or may not be what you want.
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What does the “@” symbol do in Powershell?
I've seen the @ symbol used in PowerShell to initialise arrays. What exactly does the @ symbol denote and where can I read more about it?
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What does the (unary) * operator do in this Ruby code?
Given the Ruby code
3 Answers
3
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Using IoC for Unit Testing
How can a IoC Container be used for unit testing? Is it useful to manage mocks in a huge solution (50+ projects) using IoC? Any experiences? Any C# libraries that work well for using it in unit tests?
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Difference between DirectCast() and CType() in VB.NET
I am an experienced C/C++/C# programmer who has just gotten into VB.NET. I generally use CType (and CInt, CBool, CStr) for casts because it is fewer characters and was the first way of casting which I was exposed to, but I am aware of DirectCast and TryCast as well.
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What is the difference between Lisp-1 and Lisp-2?
I have tried to understand the difference between Lisp-1 and Lisp-2 and how this relates to Clojure but I still do not understand properly. Can anyone enlighten me?
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Why java classes do not inherit annotations from implemented interfaces?
I've been using Guice's AOP to intercept some method calls. My class implements an interface and I would like to annotate the interface methods so Guice could select the right methods. Even if the annotation type is annotated with Inherited annotation implementing class doesn't inherit the annotat...