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Does R have an assert statement as in python?
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@Nick:
You can control your error message if you write a function with a descriptive name to test the condition that will throw an error in your program. Here's an example:
Less_Than_8 = function(x) return(x < 8)
for (i in 1:10)
{...
Select element based on multiple classes
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}
This selects all elements with class1 that also have class2.
In your case:
li.left.ui-class-selector {
}
Official documentation : CSS2 class selectors.
As akamike points out a problem with this method in Internet Explorer 6 you might want to read this: Use double classes in IE6 CSS?
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How can I limit Parallel.ForEach?
...ync loop with which I download some webpages. My bandwidth is limited so I can download only x pages per time but Parallel.ForEach executes whole list of desired webpages.
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Extracting Nupkg files using command line
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You can also use the NuGet command line, by specifying a local host as part of an install. For example if your package is stored in the current directory
nuget install MyPackage -Source %cd% -OutputDirectory packages
will unpa...
Test whether a Ruby class is a subclass of another class
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@Brian Because is_a? translates to is instance of. B isn't an instance of A, B.new is though (B.new.is_a? A # => true).
– Marcel Jackwerth
Oct 24 '12 at 7:44
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In Vim/Vi, how do you move the cursor to the end of the previous word?
...r people like me wondering the difference between ge and be, it's that you can be in the middle of the word and you'll go to the end of the previous, while be you need to be on the first char of the initial word.
– TankorSmash
Dec 4 '13 at 4:06
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How to create arguments for a Dapper query dynamically
...nection.Query<ExtractionRecord>(query, dbArgs);
Alternatively, you can write your own class that implements IDynamicParameters.
Note that if you are starting from an object (the usual approach with dapper), you can also use this template with DynamicParameters as a starting point:
var dbAr...
php check if array contains all array values from another array
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You know you can omit both count() calls?
– Wrikken
Aug 15 '13 at 16:01
1
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What does the 'Z' mean in Unix timestamp '120314170138Z'?
I have an X.509 certificate which has the following 2 timestamps:
2 Answers
2
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Show SOME invisible/whitespace characters in Eclipse
A long while back I transitioned to doing all my web application development in Eclipse from BBEdit. But I miss one little feature from BBEdit. I used to be able to show invisible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, ...