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What are the disadvantages to declaring Scala case classes?
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One big disadvantage: a case classes can't extend a case class. That's the restriction.
Other advantages you missed, listed for completeness: compliant serialization/deserialization, no need to use "new" keyword to create.
I prefer ...
Parse JSON String into a Particular Object Prototype in JavaScript
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The current answers contain a lot of hand-rolled or library code. This is not necessary.
Use JSON.parse('{"a":1}') to create a plain object.
Use one of the standardized functions to set the prototype:
Object.assign(new Foo, { a: 1 })
Object.setPrototypeOf({ a: 1 }, Foo.prototype)
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How to get current moment in ISO 8601 format with date, hour, and minute?
What is the most elegant way to get ISO 8601 formatted presentation of current moment, UTC? It should look like: 2010-10-12T08:50Z .
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Jenkins Git Plugin: How to build specific tag?
I am having issues getting Jenkins to build a specified tag. The tag is part of a parametrized build, but I do not know how to pass this through to the git plugin to just build that tag. This has been taking 3 hours of my day and I have conceded defeat to the masters at stack overflow.
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Cost of exception handlers in Python
...ollowing:
import timeit
statements=["""\
try:
b = 10/a
except ZeroDivisionError:
pass""",
"""\
if a:
b = 10/a""",
"b = 10/a"]
for a in (1,0):
for s in statements:
t = timeit.Timer(stmt=s, setup='a={}'.format(a))
print("a = {}\n{}".format(a,s))
print("%.2f u...
What data type to use for hashed password field and what length?
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Update: Simply using a hash function is not strong enough for storing passwords. You should read the answer from Gilles on this thread for a more detailed explanation.
For passwords, use a key-strengthening hash algorithm like Bcrypt or Argon2i. For example, in...
jQuery: click function exclude children.
... div to be "clickable" but if a user clicks on a child element, the script is not called.
6 Answers
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How to install an APK file on an Android phone?
...ne.
Close the emulator window if it’s already open. As long as the phone is plugged in, Eclipse will load and run applications on the phone instead. You need to right-click the project and select Run As > Android Application.
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Linux command (like cat) to read a specified quantity of characters
Is there a command like cat in linux which can return a specified quantity of characters from a file?
9 Answers
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How can I get form data with JavaScript/jQuery?
Is there a simple, one-line way to get the data of a form as it would be if it was to be submitted in the classic HTML-only way?
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