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How to get all subsets of a set? (powerset)
...s, if you need to modify the resulting output (e.g. joining the letters to form strings) writing a custom recipe utilizing generators and building up the output you want (e.g. adding together two strings) can be much faster.
– Ceasar Bautista
Feb 23 '18 at 7:48...
How to use a dot “.” to access members of dictionary?
...uctor
This means that if something you want to access is already in dict form, you can turn it into a DotMap for easy access:
import json
jsonDict = json.loads(text)
data = DotMap(jsonDict)
print data.location.city
Finally, it automatically creates new child DotMap instances so you can do thing...
Splitting on first occurrence
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Note: if more splits can be performed after reaching the maxsplit count, the last element in the list will contain the remainder of the string (inclusive of any sep chars/strings).
– BuvinJ
Sep 10 '19 at 13:01
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AlertDialog.Builder with custom layout and EditText; cannot access view
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@SiavA this method is available only form API 21.
– Scaraux
Jan 31 '16 at 12:29
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Can comments be used in JSON?
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No, comments of the form //… or /*…*/ are not allowed in JSON. This answer is based on:
https://www.json.org
RFC 4627:
The application/json Media Type for JavaScript Object Notation (JSON)
RFC 8259 The JavaScript Object Notation (JSON) Data...
Why does typeof NaN return 'number'?
...aN:
Operations with a NaN as at least one operand
Indeterminate forms
The divisions 0/0, ∞/∞, ∞/−∞, −∞/∞, and −∞/−∞
The multiplications 0×∞ and 0×−∞
The power 1^∞
The additions ∞ + (−∞), (−∞) + ∞ and equivalent subtractions. ...
sqlalchemy unique across multiple columns
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Django import error - no module named django.conf.urls.defaults
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What is a “callable”?
... @Kay: I also like the @Florian Bösch's answer (in its current form). btw, a decorator is not a typical usage of a "callable". The most typical "callables" are functions/methods such as def f(): ..., and class objects such as class C: ... i.e., f, ''.strip, len, and C all are callable. I...
How do I define and use an ENUM in Objective-C?
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In Apple's standard form, the type name is repeated for each enum value.
– ThomasW
Dec 9 '15 at 6:42
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