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java.lang.NoClassDefFoundError: Could not initialize class XXX
...java.lang.ClassNotFoundException). The ClassLoader ran into an error while reading the class definition when trying to read the class.
Put a try/catch inside your static initializer and look at the exception. If you read some files there and it differs from your local environment it's very likely t...
SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
... matches between the two tables, as use of indexes means it doesn't bother reading all the rows on one of the tables. a full outer join must always read all rows in both tables (or the relevant indexes). In the case where indexes are not enough, or an underlying heap has to be read to output the nee...
How to check file MIME type with javascript before upload?
I have read this and this questions which seems to suggest that the file MIME type could be checked using javascript on client side. Now, I understand that the real validation still has to be done on server side. I want to perform a client side checking to avoid unnecessary wastage of server res...
SQL - many-to-many table primary key
This question comes up after reading a comment in this question:
5 Answers
5
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How to set commands output as a variable in a batch file
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I found this thread on that there Interweb thing. Boils down to:
@echo off
setlocal enableextensions
for /f "tokens=*" %%a in (
'VER'
) do (
set myvar=%%a
)
echo/%%myvar%%=%myvar%
pause
endlocal
You can also redirect the output...
Java Generics: Cannot cast List to List? [duplicate]
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@CDT: Ah, I see. I suggest you read a Java generics tutorial then - you'll see it quite a lot :)
– Jon Skeet
Nov 27 '14 at 11:45
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Difference between static class and singleton pattern?
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What makes you say that either a singleton or a static method isn't thread-safe? Usually both should be implemented to be thread-safe.
The big difference between a singleton and a bunch of static methods is that singletons can implement interfaces (or derive from useful base classes, although ...
How to convert image to byte array
... way to get Byte array from image path is
byte[] imgdata = System.IO.File.ReadAllBytes(HttpContext.Current.Server.MapPath(path));
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When should I really use noexcept?
...re as to when I should consider using it in practice. Based on what I have read so far, the last-minute addition of noexcept seems to address some important issues that arise when move constructors throw. However, I am still unable to provide satisfactory answers to some practical questions that l...
Programmatically saving image to Django ImageField
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Even reading a binary file on OSX, this 'rb' works like magic! Thanks
– xjlin0
Aug 19 at 16:37
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