what is the canonical way to check the type of input?
32673
How to determine a Python variable's type?
151487
Determine if inside \lstinline or ordinary lstlisting environment
148248
Check if object is Class type
126196
How to check if an object is an array?
34823
How to get the containing form of an input?
89762
How can I determine the type of an HTML element in JavaScript?
67473
How to determine if a string is a number with C++?
158219
What's the difference between `raw_input()` and `input()` in Python 3?
123115
How do you find out the type of an object (in Swift)?
53586
How can I type-check variables in Python?
42876
How do I Validate the File Type of a File Upload?
46586
Is it possible to retrieve a previous un-evaluated, un-normalized input?
81731
How to check if a string starts with a specified string?
703
What is the best way to test for an empty string with jquery-out-of-the-box?
11131
How to choose input method on Kubuntu 18.04?
134315
How to test if a string is JSON or not?
74098
In Python, is there a way to validate a user input in a certain format?