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Swift class introspection & generics
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Here's how to use NSClassFromString. You have to know the superclass of what you're going to end up with. Here are a superclass-subclass pair that know how to describe themselves for println:
@objc(Zilk) class Zilk : NSObject {
override var description : String {return ...
How to override toString() properly in Java?
..., this.getKidName(), this.getHeight(), this.getGregCalendar());
}
}
Now you can unit test by create the Kid, setting the properties, and doing your own string.format on the ToStringTemplate and comparing.
making ToStringTemplate static-final means "ONE VERSION" of the truth, rather than havi...
Does JavaScript have a built in stringbuilder class?
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I didn't know push could accept multiple arguments. The random things you learn.
– Carcigenicate
Mar 16 '16 at 22:33
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How to change column datatype in SQL database without losing data
...; Uncheck --> Prevent saving changes that required table re-creation.
Now you can easily change the column name without recreating the table or losing u r records.
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How to set JAVA_HOME in Linux for all users
...y neglected the first line (the #!/bin/sh), and it won't work without it.
Now it's working:
$ echo $JAVA_HOME
/opt/ibm/java-x86_64-60/
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Debugging in Clojure? [closed]
... Actually there's a version of the debug-repl that works with swank now: hugoduncan.org/post/2010/… (Spoiler alert: it's awesome)
– user61051
May 11 '10 at 22:36
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Why can I throw null in Java? [duplicate]
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@bharal: It might not be possible to know at compile time. In the exact case of throw null, it is, but in a more general case where the exception object is decided upon at runtime, there may be no way to know. Evidently the addition (to the JLS) of a special case...
How to copy a file to multiple directories using the gnu cp command
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Thanks for the answer! Now that I think about it a bit more, without extra flags (which do not exist) cp will not know what is the source and what is the DEST dir.
– Tom Feiner
Oct 12 '08 at 16:39
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Why are hexadecimal numbers prefixed with 0x?
... he used the 0 prefix instead. This is great because
an integer constant now always consists of a single token,
the parser can still tell right away it's got a constant,
the parser can immediately tell the base (0 is the same in both bases),
it's mathematically sane (00005 == 05), and
no precious ...
Max retries exceeded with URL in requests
...Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known) part. "gai" stands for getaddrinfo, and the probable related error is: EAI_NONAME The node or service is not known; or both node and service are NULL; or AI_NUMERICSERV was specified in hints.ai_flags and service was ...