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Fetch first element which matches criteria
...row the NPE. To prevent that from happening, use orElse() instead of get() and provide a fallback object (like orElse(new Station("dummy", -1)), or store the result of findFirst() in a variable and check it with isEmpty() before calling get()
– ifloop
Jan 24 '1...
Difference between Inheritance and Composition
Are Composition and Inheritance the same?
If I want to implement the composition pattern, how can I do that in Java?
17 Ans...
How to add reference to a method parameter in javadoc?
...;/code>
* argument is the index of the first character of the subarray and
* the <code>count</code> argument specifies the length of the
* subarray. The contents of the subarray are copied; subsequent
* modification of the character array does not affect the newly
* created strin...
Using isKindOfClass with Swift
I'm trying to pick up a bit of Swift lang and I'm wondering how to convert the following Objective-C into Swift:
5 Answers
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namedtuple and default values for optional keyword arguments
I'm trying to convert a longish hollow "data" class into a named tuple. My class currently looks like this:
21 Answers
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Why is __init__() always called after __new__()?
I'm just trying to streamline one of my classes and have introduced some functionality in the same style as the flyweight design pattern .
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Sending email through Gmail SMTP server with C#
...anyone who runs into this post! (I used VB.NET but I think it's trivial to convert it to any .NET language.)
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What is the difference between GitHub and gist?
...car is meant to drive to work", without mentioning that the beach car is a convertible.
– DavidS
Jan 24 '18 at 23:23
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deleting rows in numpy array
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The simplest way to delete rows and columns from arrays is the numpy.delete method.
Suppose I have the following array x:
x = array([[1,2,3],
[4,5,6],
[7,8,9]])
To delete the first row, do this:
x = numpy.delete(x, (0), axis=0)
To del...
multiprocessing: How do I share a dict among multiple processes?
...pool.map(f, repeat(d, 10))
# `d` is a DictProxy object that can be converted to dict
pprint.pprint(dict(d))
Output:
$ python3 mul.py
{22562: 'Hi, I was written by process 22562',
22563: 'Hi, I was written by process 22563',
22564: 'Hi, I was written by process 22564',
22565: '...