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How do I exchange keys with values in a dictionary?
I receive a dictionary as input, and would like to to return a dictionary whose keys will be the input's values and whose value will be the corresponding input keys. Values are unique.
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How to make my custom type to work with “range-based for loops”?
Like many people these days I have been trying the different features that C++11 brings. One of my favorites is the "range-based for loops".
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How do I create a namespace package in Python?
In Python, a namespace package allows you to spread Python code among several projects. This is useful when you want to release related libraries as separate downloads. For example, with the directories Package-1 and Package-2 in PYTHONPATH ,
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Weird Integer boxing in Java
I just saw code similar to this:
10 Answers
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Check if an array contains any element of another array in JavaScript
I have a target array ["apple","banana","orange"] , and I want to check if other arrays contain any one of the target array elements.
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Conveniently map between enum and int / String
When working with variables/parameters that can only take a finite number of values, I try to always use Java's enum , as in
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How to mount a host directory in a Docker container
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Mapping over values in a python dictionary
Given a dictionary { k1: v1, k2: v2 ... } I want to get { k1: f(v1), k2: f(v2) ... } provided I pass a function f .
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Java - How to create new Entry (key, value)
...that similarly to Util.Map.Entry that will contain the structure key , value .
11 Answers
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Can you have multiline HTML5 placeholder text in a ?
I have ghost text in textfields that disappear when you focus on them using HTML5's placeholder attribute:
15 Answers
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