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How to deal with “data of class uneval” error from ggplot2?
...w.com%2fquestions%2f16486819%2fhow-to-deal-with-data-of-class-uneval-error-from-ggplot2%23new-answer', 'question_page');
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Get environment variable value in Dockerfile
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ARG is available from docker v1.9 onwards.
– Synesso
May 20 '16 at 6:02
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Set time to 00:00:00
...t cannot represent a moment as it lacks any concept of time zone or offset-from-UTC. Calling LocalDateTime.now almost never makes sense. Use ZonedDateTime instead. Otherwise you are ignoring crucial time zone issues. For one thing, some dates in some zones do not start at 00:00!
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'any' vs 'Object'
...ember
c.doSomething(); // Error: c neither has doSomething nor inherits it from Object
and why
a.toString(); // Ok: whatever, dude, have it your way
b.toString(); // Ok: toString is defined in Object
c.toString(); // Ok: c inherits toString from Object
So Object and {} are equivalents in TypeSc...
Difference between one-to-many and many-to-one relationship
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From this page about Database Terminology
Most relations between tables are one-to-many.
Example:
One area can be the habitat of many readers.
One reader can have many subscriptions.
One newspaper can ha...
How to pass a view's onClick event to its parent on Android?
...t whos background is a Selector. And the TextView's text is set to Spanned from HTML.
Then I set the TextView with the LinkMovementMethod.
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What is the difference between an int and an Integer in Java and C#?
...ce (or more accurately have references passed by value), and are allocated from the heap. Conversely, primitives are immutable types that are passed by value and are often allocated from the stack.
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Adding information to an exception?
... ctor that takes >1 arguments (the type is something you cannot control from the place where you catch the exception).
– Václav Slavík
Mar 12 '12 at 16:09
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Read only the first line of a file?
...d in the docs, unless it is the only line in the file, the string returned from f.readline() will contain a trailing newline. You may wish to use f.readline().strip() instead to remove the newline.
The with statement automatically closes the file again when the block ends.
The with statement only wo...
Travel/Hotel API's? [closed]
...ever, they do not immediately allow you to use their API even for testing. From their answer:
"Apologies for the inconvenience caused, but it’s simply a business decision to limit access to our rich hotel content. Please kindly check back within the next 2-3 months, where we will be able to judge...