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Check if class already assigned before adding
...cepted answer with a little added detail.
You're trying to optimise by avoiding an unnecessary check, in this regard here are factors you must be aware of:
it's not possible to have duplicate class names in the class attribute by means of manipulating a DOM element via JavaScript. If you have cla...
Maven: missing net.sf.json-lib
...endency.
Either jdk13 or jdk15, like this:
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
...
Wrapping null-returning method in Java with Option in Scala?
...Try(Option(3)).toOption.flatten
res28: Option[Int] = Some(3)
... or the ridiculously ugliest of them anothers ...
scala> Option(Try(null).getOrElse(null))
res29: Option[Null] = None
scala> Option(Try(3/0).getOrElse(null))
res30: Option[Any] = None
scala> Option(Try(3).getOrElse(null))
...
How to pass parameters to a view
... new showNameView({name: 'Nishant'});
});
Working Example: http://jsfiddle.net/Cpn3g/1771/
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Join a list of strings in python and wrap each string in quotation marks
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@marchelbling Benchmark is invalid because jamylak' solution works also for iterables of non-strings. Replace .join(words) with .join(map(str, words)) and show us how that goes.
– WloHu
Oct 19 '17 at 7:51
...
Maintaining the final state at end of a CSS3 animation
... of animation after animation ends. for example if your animation changes width from 0 to 100px, this property makes sure the element remains 100px wide after animation ends.
– Farzad YZ
Feb 17 '16 at 15:23
...
Spring Boot Rest Controller how to return different HTTP status codes?
...
@ExceptionHandler(DataIntegrityViolationException.class)
public void handleConflict() {
// Nothing to do
}
}
Also you can pass HttpServletResponse to controller method and just set response code:
public RestModel create(@RequestBody String data, HttpServletResponse response) ...
Log exception with traceback
...
This is identical to logging.exception, with the exception that the type is redundantly logged twice. Just use logging.exception unless you want a level other than error.
– Wyrmwood
Nov 17 '17 a...
What is an SSTable?
...
"An SSTable provides a persistent,ordered immutable map from keys to values, where both keys and values are arbitrary byte strings. Operations are provided to look up the value associated with a specified key, and to iterate over all key/val...
Python serialization - Why pickle?
...to convert a python object (list, dict, etc.) into a character stream. The idea is that this character stream contains all the information necessary to reconstruct the object in another python script.
As for where the pickled information is stored, usually one would do:
with open('filename', 'wb')...