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How to support UTF-8 encoding in Eclipse
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Try this
1) Window > Preferences > General > Content Types, set UTF-8 as the
default encoding for all content types.
2) Window > Preferences > General > Workspace, set Text file encoding to Other : UTF-8
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ASP.NET MVC ambiguous action methods
...uest[ValueName] != null);
}
public string ValueName { get; private set; }
}
In the above example, the attribute simply says "this method matches if the key xxx was present in the request." You can also filter by information contained within the route (controllerContext.RequestContext) if ...
Using Vim's persistent undo?
... call system('mkdir ' . myUndoDir)
let &undodir = myUndoDir
set undofile
endif
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MongoDB: How to query for records where field is null or not set?
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If the sent_at field is not there when its not set then:
db.emails.count({sent_at: {$exists: false}})
If its there and null, or not there at all:
db.emails.count({sent_at: null})
Refer here for querying and null
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Java system properties and environment variables
...the process they are added to.
Also as Bohemian stated, env variables are set in the OS (however they 'can' be set through Java) and system properties are passed as command line options or set via setProperty().
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Why modelVersion of pom.xml is necessary and always set to 4.0.0?
...t Maven's <modelVersion></modelVersion> of pom.xml is always set to 4.0.0.
4 Answers
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How to specify maven's distributionManagement organisation wide?
... best solution, see the discussion Can't specify distributionManagement in settings.xml from the Maven user's list.
– Premek Brada
Oct 21 '11 at 10:10
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How can I remove an entry in global configuration with git config?
... what you mean by "undo" the change. You can remove the core.excludesfile setting like this:
git config --global --unset core.excludesfile
And of course you can simply edit the config file:
git config --global --edit
...and then remove the setting by hand.
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Override compile flags for single files
I would like to use a global set of flags for compiling a project, meaning that at my top-level CMakeLists.txt file I have specified:
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Does setting Java objects to null do anything anymore?
... by Peter Hagger. In the performance section, there is a recommendation to set object references to null when no longer needed.
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