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How to select only the first rows for each unique value of a column
...th cte as (
select CName, AddressLine,
rank() over (partition by CName order by AddressLine) as [r]
from MyTable
)
select CName, AddressLine
from cte
where [r] = 1
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Accessing a Dictionary.Keys Key through a numeric index
...t = mydict.Keys.ElementAt(mydict.Count -1);
You should not depend on the order of keys in a Dictionary. If you need ordering, you should use an OrderedDictionary, as suggested in this answer. The other answers on this page are interesting as well.
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Factors in R: more than an annoyance?
...y they are useful because model fitting packages like lme4 use factors and ordered factors to differentially fit models and determine the type of contrasts to use. And graphing packages also use them to group by. ggplot and most model fitting functions coerce character vectors to factors, so the res...
Obtaining a powerset of a set in Java
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Would this work even if size of the set is in the order of 10^5 ?
– bane19
Jul 9 '15 at 17:13
1
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
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You will have to make an explicit call on the lazy collection in order to initialize it (common practice is to call .size() for this purpose). In Hibernate there is a dedicated method for this (Hibernate.initialize()), but JPA has no equivalent of that. Of course you will have to make sure...
Sort a list from another list IDs
...
docs = docs.OrderBy(d => docsIds.IndexOf(d.Id)).ToList();
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How to get JavaScript caller function line number? How to get JavaScript caller source URL?
...or' exception and not the 'errorHandler' exception wich you really want in order to make debugging easy. Throwing your own exceptions is great but on large projects locating them can be quite an issue, especially if they have similar messages. So, what you can do is to pass a reference to an actual...
How to sort an array in descending order in Ruby
...; while (--len > 0); is copying the pointers to the elements in reverse order if I remember my C correctly, so the array is reversed.
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EF Code First: How do I see 'EntityValidationErrors' property from the nuget package console?
...I converted craigvl's version to C# I had to add context.SaveChanges(); in order for it to work for me as below.
try
{
byte[] bytes = System.IO.File.ReadAllBytes(@"C:\Users\sheph_000\Desktop\Rawr.png");
Console.WriteLine(bytes);
context.BeverageTypes.AddOrUpdate(
x => x.Name...
Why do we have to normalize the input for an artificial neural network?
...ou have to normalize the values that you want to pass to the neural net in order to make sure it is in the domain. As with all functions, if the arguments are not in the domain, the result is not guaranteed to be appropriate.
The exact behavior of the neural net on arguments outside of the domain ...