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Difference between List, List, List, List, and List
... you pointed out this is not the case. The reason why was that if we could cast from List<String> to List<Object>, then we could put Objects into that list, thus violating the original contract of List<String> when attempting to retrieve an element.
– Peter
...
How to randomly select rows in SQL?
...rformance, this could be a better answer:
SELECT * FROM Table1
WHERE (ABS(CAST(
(BINARY_CHECKSUM
(keycol1, NEWID())) as int))
% 100) < 10
https://msdn.microsoft.com/en-us/library/cc441928.aspx
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Best practices to handle routes for STI subclasses in rails
...subclassing (unlike Rails 4) and works in Rails 3.
# initializers/acts_as_castable.rb
module ActsAsCastable
extend ActiveSupport::Concern
module ClassMethods
def new_with_cast(*args, &block)
if (attrs = args.first).is_a?(Hash)
if klass = descendant_class_from_attrs(attrs...
How to generate a random number in C++?
...is intuition it is
only natural to search the web for some magic spells to cast to get
such random number in any possible context.
^^^ THAT kind of intuitive expectations IS VERY WRONG and harmful in all cases involving Pseudo-Random Number Generators - despite being reasonable for true random numb...
How does Python manage int and long?
...
Comment by Ted : As mentioned below beware that casting something to int that is larger than maxint will still result in a long >>>type(int(sys.maxint+1)) <type 'long'>
– StuartLC
Oct 25 '12 at 9:51
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C read file line by line
...
Why the cast (FILE*) fp ? Isn't fp is already a FILE * and also fopen() returns a FILE * ?
– Accountant م
Apr 4 '19 at 23:25
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How do you bind an Enum to a DropDownList control in ASP.NET?
...l.DropDownListFor(o => o.EnumProperty, Enum.GetValues(typeof(enumtype)).Cast<enumtype>().Select(x => new SelectListItem { Text = x.ToString(), Value = ((int)x).ToString() }))
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Should I store entire objects, or pointers to objects in containers?
...class pointers, and to handle all the collateral damage in object storage, casting, and so on. It took me a couple of months to convince myself that the new code was working. Incidentally, this made me think hard about how well-designed C++'s object model is.
On my current big project, my central d...
Android OnClickListener - identify a button
...s not correct. View is not a Button, but Button is a View. Though, you can cast a View to a Button. Keep in mind that the second way to do it is not recommended... maybe that v may not be a Button, which will generate a cast exception.
– Cristian
Jul 23 '10 at ...
How to use GROUP BY to concatenate strings in SQL Server?
...LUES (2,'C',9)
SELECT
[ID],
STUFF((
SELECT ', ' + [Name] + ':' + CAST([Value] AS VARCHAR(MAX))
FROM #YourTable
WHERE (ID = Results.ID)
FOR XML PATH(''),TYPE).value('(./text())[1]','VARCHAR(MAX)')
,1,2,'') AS NameValues
FROM #YourTable Results
GROUP BY ID
DROP TABLE #YourT...