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Installing older version of R package
I am trying to use Rpy2 and ggplot2 but I get an error. After some searching for the error online, I found that the error occurs because there are changes in the ggplot2 package that are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)).
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How can I check a C# variable is an empty string “” or null? [duplicate]
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if (string.IsNullOrEmpty(myString)) {
//
}
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NSDictionary - Need to check whether dictionary contains key-value pair or not
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2 Answers
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Active
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Is there a builtin confirmation dialog in Windows Forms?
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Here is an example. You can try something like this.
var confirmResult = MessageBox.Show("Are...
In SQL, what's the difference between count(column) and count(*)?
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count(*) counts NULLs and count(column) does not
[edit] added this code so that people can ru...
Spring Data: “delete by” is supported?
... Andrey AtapinAndrey Atapin
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Source unreachable when using the NuGet Package Manager Console
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edited May 6 '15 at 14:26
Kyle Dev-ious
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answered Oct 14 '14 at 11:17
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What's the complete range for Chinese characters in Unicode?
... are found in five main blocks of the Unicode Standard, as
shown in Table 12-2
Table 12-2. Blocks Containing Han Ideographs
Block Range Comment
CJK Unified Ideographs 4E00-9FFF Common
CJK Unified Ideographs Extension A 3400-4DBF Rare...
What exactly is OAuth (Open Authorization)?
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edited Feb 8 '17 at 21:43
mandark
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answered Nov 17 '10 at 4:5...
How to add a custom button state
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The solution indicated by @(Ted Hopp) works, but needs a little correction: in the selector, t...