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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...[T]) else None
}
}
}
scala> Registry.register("a", List(1,2,3))
scala> Registry.get[List[Int]]("a")
res6: Option[List[Int]] = Some(List(1, 2, 3))
scala> Registry.get[List[String]]("a")
res7: Option[List[String]] = None
When storing an element, we store a "Manifest" of it too....
Is there a label/goto in Python?
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123
No, Python does not support labels and goto, if that is what you're after. It's a (highly) struc...
How to use underscore.js as a template engine?
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Everything you need to know about underscore template is here. Only 3 things to keep in mind:
<% %> - to execute some code
<%= %> - to print some value in template
<%- %> - to print some values HTML escaped
That's all about it.
Simple example:
var tpl = _.template("&l...
$(this).serialize() — How to add a value?
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answered Jun 30 '11 at 18:41
matt bmatt b
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How to check if an email address exists without sending an email?
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93
There are two methods you can sometimes use to determine if a recipient actually exists:
You c...
How to add some non-standard font to a website?
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edited Dec 22 '15 at 12:32
community wiki
2 r...
Haskell, Lisp, and verbosity [closed]
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ShreevatsaRShreevatsaR
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Inner join vs Where
...1 hash join (access("T1"."ID"="T2"."ID"))
-- 2 table access full table1
-- 3 table access full table2
And the execution plan for the query using a WHERE clause.
-- with where clause
EXPLAIN PLAN FOR
SELECT * FROM table1 t1, table2 t2
WHERE t1.id = t2.id;
SELECT *
FROM TABLE (DBMS_XPLAN.DISPLAY)...
How to force GitHub Pages build?
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edited May 10 at 1:33
SUPERCILEX
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answered...
Which Architecture patterns are used on Android? [closed]
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324
I tried using both the model–view–controller (MVC) and model–view–presenter architectu...