Detecting the type of user input

New to Julia
1

Hello,
How to identify the input type? For example, I want to get an input from the user with the readline() command. How can I tell if this input is a number or a string?

Thank you.

2

The input you will get, will always be a string.
You can test whether it is a number using parse , cf. Numbers · The Julia Language
or also the thread Type-safe conversion of strings to numbers

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3

You should use tryparse if you intend to check if it is what you want, not parse which will raise an exception.

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4

Hi,
Thank you so much.
I wrote a code like below:

print("Please enter something: ")
a = readline()
if ((tryparse(Int, a) == nothing))
    println("You have entered a string")
else
    println("You have entered a number")
end