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Java generics - why is “extends T” allowed but not “implements T”?
...and desirably at run time ) anything assigned to the generic can safely be cast to any of the specified interfaces. This is not the case the way java is implemented now. But it would be nice :)
– peterk
May 7 '16 at 3:13
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Multiple Inheritance in C#
... Is it possible to have multiple inheritance and while having upcasts and downcasts be identity-preserving? The solutions I know of for the problems of multiple inheritance revolve around having casts that are not identity-preserving (if myFoo is of type Foo, which inherits from Moo and ...
Python - List of unique dictionaries
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@JorgeVidinha assuming each could be cast to str (or unicode), try this: {str(v['flight'])+':'+str(v['lon'])+','+str(v['lat']): v for v in stream}.values() This just creates a unique key based on your values. Like 'MH370:-21.474370,86.325589'
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How do I represent a time only value in .NET?
... there is no reason I think they can directly use uint and this avoids the casting in the constructor.
– shelbypereira
Jul 23 '19 at 9:12
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The performance impact of using instanceof in Java
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If "object" is an instance of ObjT, casting it is a little faster than doing an instanceof, but the difference my quick test found was 10-20ms over 10,000,000 iterations. If "object" isn't an ObjT, though, catching the exception was over 3000x slower - over 31,...
How to check if field is null or empty in MySQL?
...;=''',FROMDATE ,''' AND t.entdt<=''',TODATE ,''' ',VTYPE,'
ORDER BY CAST(ENTDT AS DATE)) AS ta
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Postgres: SQL to list table foreign keys
...6485 is the oid of the table I'm looking at - you can get that one by just casting your tablename to regclass like:
WHERE r.conrelid = 'mytable'::regclass
Schema-qualify the table name if it's not unique (or the first in your search_path):
WHERE r.conrelid = 'myschema.mytable'::regclass
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How can I get the current user directory?
...execute this code:
Enum.GetValues(typeof(Environment.SpecialFolder))
.Cast<Environment.SpecialFolder>()
.Select(specialFolder => new
{
Name = specialFolder.ToString(),
Path = Environment.GetFolderPath(specialFolder)
})
.OrderBy(item => item.Path.ToLow...
Serialize an object to string
... One minor change though would be to return T instead of object, and cast the returned object to T in the DeserializeObject function. This way the strongly typed object is returned instead of a generic object.
– deadlydog
Nov 18 '14 at 15:29
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How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...cularly, you don't have to use the modulo, call ToString() and apply (int) cast. Considering that in most cases in C# world you would start numbering from 0, here is my revision: <!-- language: c# --> public static string GetColumnName(int index) // zero-based { const byte BASE = 'Z' ...