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How does collections.defaultdict work?
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Usually, a Python dictionary throws a KeyError if you try to get an item with a key that is not currently in the dictionary. The defaultdict in contrast will simply create any items that you try to access (provided of course they do not exist yet). To create su...
Why do we have to normalize the input for an artificial neural network?
It is a principal question, regarding the theory of neural networks:
9 Answers
9
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Is Java a Compiled or an Interpreted programming language ?
In the past I have used C++ as a programming language. I know that the code written in C++ goes through a compilation process until it becomes object code "machine code".
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Jackson - Deserialize using generic class
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Naman
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answered Jul 26 '12 at 11:49
Eser AygünEse...
How to set my default shell on Mac?
I do not like to retype fish every time I start terminal. I want fish on by default. How can I set fish shell as my default shell on a Mac?
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How do I lowercase a string in Python?
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Use .lower() - For example:
s = "Kilometer"
print(s.lower())
The official 2.x documentation is here: str.lower()
The official 3.x documentation is here: str.lower()
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Does Typescript support the ?. operator? (And, what's it called?)
...7 and called Optional chaining: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining
I can't find any reference to it whatsoever in the TypeScript language specification.
As far as what to call this operator in CoffeeScript, it's called the existential o...
JSON Array iteration in Android/Java
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I have done it two different ways,
1.) make a Map
HashMap<String, String> applicationSettings = new HashMap<String,String>();
for(int i=0; i<settings.length(); i++){
String value = settings.getJSONObject(i).getString("valu...
Design by contract using assertions or exceptions? [closed]
When programming by contract a function or method first checks whether its preconditions are fulfilled, before starting to work on its responsibilities, right? The two most prominent ways to do these checks are by assert and by exception .
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What is a “web service” in plain English?
I've been reading about "web services" here on SO, on Wikipedia, Google, etc., and I don't quite understand what they are. What is the plain English definition/description?
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