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NULL values inside NOT IN clause
...ame up when I got different records counts for what I thought were identical queries one using a not in where constraint and the other a left join . The table in the not in constraint had one null value (bad data) which caused that query to return a count of 0 records. I sort of understand wh...
NullPointerException in Java with no StackTrace
...sing log4j. I discovered (inadvertently) a place where I had written
LOG.error(exc);
instead of the typical
LOG.error("Some informative message", e);
through laziness or perhaps just not thinking about it. The unfortunate part of this is that it doesn't behave as you expect. The logger API ...
Semantic Issue: Property's synthesized getter follows Cocoa naming convention for returning 'owned'
...tle, when synthesised, yields a method called -newTitle, hence the warning/error. -newTitle is supposed to be a getter method for the newTitle property, however naming conventions state that a method whose name begins with new returns an object that’s owned by the caller, which is not the case of ...
Eclipse Android Plugin — libncurses.so.5
... @Oin this is the first thread that shows up for "android ncurses 5 so error" so it is relevant for other distros/packaging systems as well.
– Jason Axelson
May 30 '13 at 20:46
...
How to request Administrator access inside a batch file
...system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"
)
REM --> If error flag set, we do not have admin.
if '%errorlevel%' NEQ '0' (
echo Requesting administrative privileges...
goto UACPrompt
) else ( goto gotAdmin )
:UACPrompt
echo Set UAC = CreateObject^("Shell.Application"^)...
How to make --no-ri --no-rdoc the default for gem install?
...d Ruby that I copied & pasted at some point and then resulted in psych errors while installing RubyGems 1.8.10 under Ruby 1.9.2.
– stevenhaddox
Sep 3 '11 at 15:02
17
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How to prevent rm from reporting that a file was not found?
...delete many files. Sometimes the files are not present, so it reports many errors. I do not need this message. I have searched the man page for a command to make rm quiet, but the only option I found is -f , which from the description, "ignore nonexistent files, never prompt", seems to be the rig...
Do interfaces inherit from Object class in java
...reover you can cast interface to an Object implicitly without any compiler error.
– nme
Feb 10 '19 at 14:03
...
Is Meyers' implementation of the Singleton pattern thread safe?
Is the following implementation, using lazy initialization, of Singleton (Meyers' Singleton) thread safe?
6 Answers
...
Namespace and class with the same name?
...using Foo;
using Bar;
class C { Foo foo; }
}
The compiler gives an error. “Foo” is ambiguous between Foo.Foo and
Bar.Foo. Bummer. I guess I’ll fix that by fully qualifying the name:
class C { Foo.Foo foo; }
This now gives the ambiguity error “Foo in
Foo.Foo is ambiguous between ...