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Find first element in a sequence that matches a predicate
...To find first element in a sequence seq that matches a predicate:
next(x for x in seq if predicate(x))
Or (itertools.ifilter on Python 2):
next(filter(predicate, seq))
It raises StopIteration if there is none.
To return None if there is no such element:
next((x for x in seq if predicate(x)...
What are forward declarations in C++?
At: http://www.learncpp.com/cpp-tutorial/19-header-files/
8 Answers
8
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How to import the class within the same directory or sub directory?
I have a directory that stores all the .py files.
13 Answers
13
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How to convert Set to Array?
...e elements, but it does not expose any good way to get properties, except for generator [Set].values, which is called in an awkward way of mySet.values.next() .
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How to add minutes to my Date
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The issue for you is that you are using mm. You should use MM. MM is for month and mm is for minutes. Try with yyyy-MM-dd HH:mm
Other approach:
It can be as simple as this (other option is to use joda-time)
static final long ONE_MI...
TypeScript typed array usage
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You have an error in your syntax here:
this._possessions = new Thing[100]();
This doesn't create an "array of things". To create an array of things, you can simply use the array literal expression:
this._possessions = [];
Of the array...
Should I instantiate instance variables on declaration or in the constructor?
Is there any advantage for either approach?
15 Answers
15
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How to deserialize a list using GSON or another JSON library in Java?
...gt;>(){}.getType());
You might also need to provide a no-arg constructor on the Video class you're deserializing to.
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Best Practices: Salting & peppering passwords?
...on in which I learned that what I'd been doing wasn't in fact salting passwords but peppering them, and I've since begun doing both with a function like:
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In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
...is on the PowerShell command line:
. .\MyFunctions.ps1
A1
The dot operator is used for script include.
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