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Why can't I reference System.ComponentModel.DataAnnotations?
...ng to use DataAnnotations in my WPF project to specify a maximum length of strings, with the following:
14 Answers
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Properties order in Margin
If I have such string in XAML:
4 Answers
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Using -performSelector: vs. just calling the method
...s explained in a previous answer. For example
SEL method = NSSelectorFromString([NSString stringWithFormat:@"doSomethingWithMy%@:", @"Age");
[object performSelector:method];
The other use, is to asynchronously dispatch a message to object, that will be executed later on the current runloop. For ...
How to test if list element exists?
...tain NULL elements, it might not be enough to check is.null(foo$a). A more stringent test might be to check that the name is actually defined in the list:
foo <- list(a=42, b=NULL)
foo
is.null(foo[["a"]]) # FALSE
is.null(foo[["b"]]) # TRUE, but the element "exists"...
is.null(foo[["c"]]) # TRUE...
What is the difference between syntax and semantics in programming languages?
...The first step is lexical analysis where tokens are generated by dividing string into lexemes then parsing, which build some abstract syntax tree (which is a representation of syntax). The next steps involves transforming or evaluating these AST (semantics).
Also, observe that if you defined a var...
Case conventions on element names?
...st properties, and if there is a hyphen it explicitly adds the ElementName string as the first parameter so it's clarified. The problem I found is that depending on your .NET libraries, this may not matter - the element still won't deserialize on some systems. It works in VS2012 on Win7, but not ru...
how to change uiviewcontroller title independent of tabbar item title
...on title
/// - tabBarTitle: TabBar title
func setTitles(navigationTitle: String, ta
Ruby Arrays: select(), collect(), and map()
...] != "" }
That will give you all items where the :qty key isn't an empty string.
official select documentation
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Jquery selector input[type=text]')
...ntsByClassName, rather than going through $ which does a lot of checking / string parsing of your selector, jQuery isn't famous for its performant library. And I haven't honestly seen an app slowing down because of calling $ one too many, if you have a website that has that problem, please show me, ...
How do I embed a single file from a GitHub gist with the new gist interface?
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Take the gist URL from the left-hand side and after the .js add a query string like ?file=myFile.blah, e.g.
<script src="https://gist.github.com/4505639.js?file=macroBuild.scala" type="text/javascript"></script>
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