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ispunct

ispunct(c::Union{Char,AbstractString}) -> Bool

Tests whether a character belongs to the Unicode general category Punctuation, i.e. a character whose category code begins with 'P'. For strings, tests whether this is true for all elements of the string.

Examples

1. Check if a character is punctuation:

   julia> ispunct('!')
   true

   This example checks if the character '!' is punctuation. The function returns true because '!' is a punctuation character.

2. Check if a string contains only punctuation:

   julia> ispunct("Hello!")
   false

   The function checks if all elements of the string "Hello!" are punctuation characters. Since the string contains a non-punctuation character ('H'), the function returns false.

3. Handle empty strings:

   julia> ispunct("")
   true

   In this example, the function returns true for an empty string since there are no non-punctuation characters present.

Common mistake example:

julia> ispunct('A')
ERROR: MethodError: no method matching ispunct(::Char)

In this example, the function call ispunct('A') results in an error because the character 'A' is not a punctuation character. Remember that ispunct only accepts characters or strings as input.

See Also

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