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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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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...
How to check an Android device is HDPI screen or MDPI screen?
I want to check this to fetch different images by internet. How to do that?
6 Answers
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Remove duplicate dict in list in Python
I have a list of dicts, and I'd like to remove the dicts with identical key and value pairs.
12 Answers
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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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git: Your branch is ahead by X commits
How does this actually come about?
18 Answers
18
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Spark java.lang.OutOfMemoryError: Java heap space
...s, you should have 2 - 4 per CPU. IME increasing the number of partitions is often the easiest way to make a program more stable (and often faster). For huge amounts of data you may need way more than 4 per CPU, I've had to use 8000 partitions in some cases!
Decrease the fraction of memory reserved...
What are the Android SDK build-tools, platform-tools and tools? And which version should be used?
I know this is a very rudimentary question, but to my surprise, I could not find any document about Android SDK Build-tools.
Besides Android SDK Tools and Android SDK Platform-tools, there are a bunch of Android SDK Build-tools as shown in the appended screenshot. Could anyone point to a source expl...
How do I loop through a list by twos? [duplicate]
I want to loop through a Python list and process 2 list items at a time. Something like this in another language:
7 Answers...