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How to set a default value for a datetime column to record creation time in a migration?
...}
t.timestamps
end
end
end
See discussion at https://github.com/rails/rails/issues/27077 and answer there by prathamesh-sonpatki
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How to implement custom JsonConverter in JSON.NET to deserialize a List of base class objects?
...trying to extend the JSON.net example given here
http://james.newtonking.com/projects/json/help/CustomCreationConverter.html
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I want to get the type of a variable at runtime
... pattern match, due to JVM's erasure.
Examples with TypeTag can get quite complex -- not even comparing two type tags is not exactly simple, as can be seen below:
import scala.reflect.runtime.universe.TypeTag
def f[A, B](a: A, b: B)(implicit evA: TypeTag[A], evB: TypeTag[B]) = evA == evB
type X = ...
Passing a String by Reference in Java?
... time. In fact when you write Java code like s = "Hello " + name, then the compiler will generate byte code which creates a StringBuilder and calls append() two times.
– Aaron Digulla
May 7 '19 at 13:36
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Debugging in Clojure? [closed]
... Could you be misspelling clojure as closure, or is that a typo in the comment? Can you load other clojure.contrib libraries?
– John Lawrence Aspden
Sep 5 '10 at 21:27
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How to identify server IP address in PHP
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Skip certain tables with mysqldump
Is there a way to restrict certain tables from the mysqldump command?
10 Answers
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Difference between this and self in JavaScript
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For completeness, self is useful in context of WebWorker when window is not accessible (developer.mozilla.org/en-US/docs/Web/Guide/Performance/…). Using self instead of window lets you access the global object in a portable way...
connecting to MySQL from the command line
How can you connect to MySQL from the command line in a Mac? (i.e. show me the code)
6 Answers
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