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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
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Use dynamic_cast for converting pointers/references within an inheritance hierarchy.
Use static_cast for ordinary type conversions.
Use reinterpret_cast for low-level reinterpreting of bit patterns. Use with extreme caution.
Use const_cast fo...
Appending an element to the end of a list in Scala
...stant factors are ignored for asymptotic complexities. I think the List is converted to a ListBuffer, the element is appended, and the ListBuffer converted back (pretty much like String and StringBuilder in Java), but that's just a guess.
– Landei
Aug 9 '13 at ...
How to test if a string is basically an integer in quotes using Ruby
...> false
I don't agree with the solutions that provoke an exception to convert the string - exceptions are not control flow, and you might as well do it the right way. That said, my solution above doesn't deal with non-base-10 integers. So here's the way to do with without resorting to exception...
Fastest way to convert Image to Byte array
...d Compress it and Send it to the receiver. To compress the image I need to convert it to a byte[].
6 Answers
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Nullable types and the ternary operator: why is `? 10 : null` forbidden? [duplicate]
...DbType.Double).Value = String.IsNullOrEmpty(pNumberChar) ? (Double?)null : Convert.ToDouble(pNumberChar);
– Rajesh Thampi
Feb 9 '17 at 7:00
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SQL Server: Get data for only the past year
...ost readable, IMO:
SELECT * FROM TABLE WHERE Date >
DATEADD(yy, -1, CONVERT(datetime, CONVERT(varchar, GETDATE(), 101)))
Which:
Gets now's datetime GETDATE() = #8/27/2008 10:23am#
Converts to a string with format 101 CONVERT(varchar, #8/27/2008 10:23am#, 101) = '8/27/2007'
Converts to a d...
any tool for java object to object mapping? [closed]
I am trying to convert DO to DTO using java and looking for automated tool before start writing my own. I just wanted to know if there any free tool available for the same.
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How can I check if an argument is defined when starting/calling a batch file?
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A more-advanced example:
⍟ unlimited arguments.
⍟ exist on file system (either file or directory?) or a generic string.
⍟ specify if is a file
⍟ specify is a directory
⍟ no extensions, would work in legacy scripts!
⍟ minimal code ☺
@echo off
:loop
::--------------------...
What is a higher kinded type in Scala?
... -> *
Order 2: Functor :: (* -> *) -> Constraint—higher-kinded: converts unary type constructors to typeclass constraints
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Reading a List from properties file and load with spring annotation @Value
...Service();
}
This activates the new configuration service which supports converting String to Collection types.
If you do not activate this configuration service, Spring falls back on its legacy property editors as configuration services, which do not support this kind of conversion.
Converting t...