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Expert R users, what's in your .Rprofile? [closed]
... Yes, the local({ ... }) as shown in help(Startup) is what I usually do these days in Rprofile.site. Haven't needed the X11 hack in a while :)
– Dirk Eddelbuettel
Aug 27 '15 at 11:02
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From ND to 1D arrays
...tten() is way slower, as it needs to make a copy.
– BallpointBen
Aug 29 '18 at 22:52
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Throw away local commits in Git
...commits ahead of the origin, and not in a good state. I want to get rid of all these commits and start over again.
19 Answe...
Eclipse Optimize Imports to Include Static Imports
Is there anyway to get Eclipse to automatically look for static imports? For example, now that I've finally upgraded to Junit 4, I'd like to be able to write:
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ASP.NET MVC Html.ValidationSummary(true) does not display model errors
...rror you're adding has the key 'error' so it will not display in when you call ValidationSummary(true). You need to add your custom error message with an empty key like this:
ModelState.AddModelError(string.Empty, ex.Message);
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NULL values inside NOT IN clause
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@Ian - It looks like "A NOT IN ( 'X', 'Y' )" actually is an alias for A <> 'X' AND A <> 'Y' in SQL. (I see that you discovered this yourself in stackoverflow.com/questions/3924694/…, but wanted to make sure your objection was addressed in this question.)
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How to get the index of an element in an IEnumerable?
...ble is so you can lazily iterate over the contents. As such, there isn't really a concept of an index. What you are doing really doesn't make a lot of sense for an IEnumerable. If you need something that supports access by index, put it in an actual list or collection.
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How to change the order of DataFrame columns?
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@FooBar, the type of cols is list; it even allows duplicates (which will be discarded when used on the dataframe). You are thinking of Index objects.
– alexis
Feb 28 '17 at 15:19
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Conversion of a datetime2 data type to a datetime data type results out-of-range value
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What kind of dates do you have in the column?
Do all of them fit within the range of the type?
As an aside, the correct way to get a Type object for the DataColumn constructor is the typeof keyword, which is orders of magnitude faster.
Therefore, to create the column, y...
Simplest way to do a fire and forget method in c# 4.0
I really like this question:
4 Answers
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