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How to chain scope queries with OR instead of AND?
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You would do
Person.where('name=? OR lastname=?', 'John', 'Smith')
Right now, there isn't any other OR support by the new AR3 syntax (that is without using some 3rd party gem).
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Any reason to prefer getClass() over instanceof when generating .equals()?
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edited Feb 27 '09 at 23:26
answered Feb 27 '09 at 21:11
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Is it possible to add an HTML link in the body of a MAILTO link [duplicate]
I have not had to mess with mailto links much. However I now need to add a link in the body of a mailto if it is possible.
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contenteditable change events
I want to run a function when a user edits the content of a div with contenteditable attribute. What's the equivalent of an onchange event?
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How to mock ConfigurationManager.AppSettings with moq
...ou just mock the IConfiguration. You might be able to implement the facade itself in a few different ways. Above I chose just to wrap the individual properties. You also obtain the side benefit of having strongly typed information to work with rather than weakly typed hash arrays.
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How to use if - else structure in a batch file?
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Your syntax is incorrect. You can't use ELSE IF. It appears that you don't really need it anyway. Simply use multiple IF statements:
IF %F%==1 IF %C%==1 (
::copying the file c to d
copy "%sourceFile%" "%destinationFile%"
)
IF %F%==1 IF %C%==0 (
::moving th...
How do I capture the output into a variable from an external process in PowerShell?
I'd like to run an external process and capture it's command output to a variable in PowerShell. I'm currently using this:
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What is the meaning of prepended double colon “::”?
...ration, class 1
::Configuration::doStuff(...)
}
}
Basically, it allows you to traverse up to the global namespace since your name might get clobbered by a new definition inside another namespace, in this case MyApp.
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How much faster is Redis than mongoDB?
It's widely mentioned that Redis is "Blazing Fast" and mongoDB is fast too. But, I'm having trouble finding actual numbers comparing the results of the two. Given similar configurations, features and operations (and maybe showing how the factor changes with different configurations and operations), ...
How do you crash a JVM?
...interviewee, "How do you crash a JVM?" I thought that you could do so by writing an infinite for-loop that would eventually use up all the memory.
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