Recent questions tagged Optional

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optional JAXB xml attribute while marshalling

When I marshal java object using JAXB I am getting below xml element <error line="12" column="" message="test" / ... Is there any way to get it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional variables - VB.NET := Operator

What does the following mean? Class.Function(variable := 1 + 1) What is this operator called, and what does it do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional parameters - Are Options and named default arguments like oil and water in a Scala API?

I'm working on a Scala API (for Twilio, by the way) where operations have a pretty large amount of parameters ... the best choice in this case? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional parameters - Fortran 2003 / 2008: Elegant default arguments?

In fortran, we can define default arguments. However, if an optional argument is not present, it can also not be ... -1 would cause a segfault. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional arguments in initializer of python class

I was wondering if anyone had any good ways of quickly explaining how to efficiently and pythonically create ... and more easily understood. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?

I've been a bad kid and used the following syntax in my partial templates to set default values for local variables ... I need to test each one? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional - Swift nil has a numeric value?

This is valid code in Swift: println(nil < 1) And the output will be true, likewise println(nil > 1) will be ... 3.0 as it doesn't compile. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional - What happened to the UIView?() constructor in Swift 3.0?

In Swift 2.2, I often declared variables using a concise syntax similar to let x = UIView?(). This gave x ... that I've not yet discovered? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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optional parameters in SQL Server stored proc?

I'm writing some stored procs in SQL Server 2008, and wondered if the concept of optional input parameters is ... is available here. Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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