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android, Programming

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How to set background color of a View

I’m trying to set the background color of a View (in this case a Button). I use this code: // set the background ...

June 4, 2022
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Programming, Python

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How to JSON serialize sets?

I have a Python set that contains objects with __hash__ and __eq__ methods in order to make certain no duplicates are included in ...

June 3, 2022
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Programming, Python

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Converting a list to a set changes element order

Recently I noticed that when I am converting a list to set the order of elements is changed and is sorted by character. ...

June 3, 2022
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jquery, Programming

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Set value of hidden field in a form using jQuery’s “.val()” doesn’t work

I’ve been trying to set the value of a hidden field in a form using jQuery, but without success. Here is a sample ...

May 31, 2022
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Java, Programming

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Picking a random element from a set

How do I pick a random element from a set? I’m particularly interested in picking a random element from a HashSet or a ...

May 31, 2022
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javascript, Programming

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How to map/reduce/filter a Set in JavaScript?

Is there any way to map/reduce/filter/etc a Set in JavaScript or will I have to write my own? Here’s some sensible Set.prototype extensions ...

May 30, 2022
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Programming, Python

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How to join two sets in one line without using “|”

Assume that S and T are assigned sets. Without using the join operator |, how can I find the union of the two ...

May 29, 2022
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Java, Programming

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Most concise way to convert a Set to a List

For example, I am currently doing this: Set<String> setOfTopicAuthors = .... List<String> list = Arrays.asList( setOfTopicAuthors.toArray( new String...

May 29, 2022
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Java, Programming

IT Nursery

Java Set retain order?

Does a Java Set retain order? A method is returning a Set to me and supposedly the data is ordered but iterating over ...

May 29, 2022
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Programming, Python

IT Nursery

How is set() implemented?

I’ve seen people say that set objects in python have O(1) membership-checking. How are they implemented internally to allow this? What sort of ...

May 29, 2022
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