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What is the difference between DAO and Repository patterns?
...to entities would usually be tracked by separate UnitOfWork.
It does seem common to see implementations called a Repository that is really more of a DAO, and hence I think there is some confusion about the difference between them.
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Are there constants in JavaScript?
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Note that if you don't need cross-browser compatibility (or you're server-side programming in Rhino or Node.js) you can use the const keyword. It's currently supported by all modern browsers except for IE.
– Husky
Aug 1 '11 at 1...
javax.validation.ValidationException: HV000183: Unable to load 'javax.el.ExpressionFactory'
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Looks like they recommend both on the github page for SE environments: github.com/hibernate/hibernate-validator. The top one was sufficient for me though.
– vphilipnyc
Jun 29 '16 at 7:27
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What is the difference between a weak reference and an unowned reference?
... provide this benefit).
A weak reference allows the possibility of it to become nil (this happens automatically when the referenced object is deallocated), therefore the type of your property must be optional - so you, as a programmer, are obligated to check it before you use it (basically the compi...
Convert UTF-8 encoded NSData to NSString
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edited Jun 20 at 9:12
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answered Mar 18 '10 at 6:20
kennytmkennytm
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T-SQL: Deleting all duplicate rows but keeping one [duplicate]
... say what version you were using, but in SQL 2005 and above, you can use a common table expression with the OVER Clause. It goes a little something like this:
WITH cte AS (
SELECT[foo], [bar],
row_number() OVER(PARTITION BY foo, bar ORDER BY baz) AS [rn]
FROM TABLE
)
DELETE cte WHERE [rn...
What do commas and spaces in multiple classes mean in CSS?
...<div class="grid_8">460px Wide</div>
</div>
As for the commas, it's applying one rule to multiple classes, like this.
.blueCheese, .blueBike {
color:blue;
}
It's functionally equivalent to:
.blueCheese { color:blue }
.blueBike { color:blue }
But cuts down on verbosity.
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Maven error “Failure to transfer…”
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Getting MAC Address
I need a cross platform method of determining the MAC address of a computer at run time. For windows the 'wmi' module can be used and the only method under Linux I could find was to run ifconfig and run a regex across its output. I don't like using a package that only works on one OS, and parsing ...
“Invalid form control” only in Google Chrome
...en, wouldn't it make even more sense to disable it instead? (stackoverflow.com/a/22753533/421243)
– David Cook
Oct 20 '14 at 4:34
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