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Reorder levels of a factor without changing order of values
...with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be.
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LINQ Ring: Any() vs Contains() for Huge Collections
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It depends on the collection. If you have an ordered collection, then Contains might do a smart search (binary, hash, b-tree, etc.), while with `Any() you are basically stuck with enumerating until you find it (assuming LINQ-to-Objects).
Also note that in your example,...
For i = 0, why is (i += i++) equal to 0?
...d value of x becomes the result of the operation.
Note that due to order of precedence, the postfix ++ occurs before +=, but the result ends up being unused (as the previous value of i is used).
A more thorough decomposition of i += i++ to the parts it is made of requires one to know that...
How do I iterate over the words of a string?
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In order to avoid it skipping empty tokens, do an empty() check: if (!item.empty()) elems.push_back(item)
– 0x499602D2
Nov 9 '13 at 22:33
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How to perform a real time search and filter on a HTML table
...ctionality using regular expressions will allow you to search words in any order in the row. It will work the same if you type apple green or green apple:
var $rows = $('#table tr');
$('#search').keyup(function() {
var val = '^(?=.*\\b' + $.trim($(this).val()).split(/\s+/).join('\\b)(?=.*\\b')...
How to keep the console window open in Visual C++?
... version 2012 - I haven't yet tested 2013). This bug is detailed here.
In order to have the console pause after program termination on a makefile project, perform these steps (this may differ for versions other than 2010 - 2012):
1) Pass /SUBSYSTEM:CONSOLE to the linker. - EDIT: see below.
2) Ope...
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...
Real life example, when to use OUTER / CROSS APPLY in SQL
... WHERE pa.object_id = pr.object_id
ORDER BY pr.name) pa
ORDER BY pr.name,
pa.name
2) Calling a Table Valued Function for each row in the outer query
SELECT *
FROM sys.dm_exec_query_stats AS qs
CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle)
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Spring mvc @PathVariable
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suppose you want to write a url to fetch some order, you can say
www.mydomain.com/order/123
where 123 is orderId.
So now the url you will use in spring mvc controller would look like
/order/{orderId}
Now order id can be declared a path variable
@RequestMapping(va...
Laravel 4: how to “order by” using Eloquent ORM [duplicate]
Simple question - how do I order by 'id' descending in Laravel 4.
3 Answers
3
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