Char
Types
Functions
O(1). Is the character a control character?
O(1). Is the character a lowercase ASCII letter?
O(1). Is the character an uppercase ASCII letter?
O(1). Is the character an ASCII letter?
O(1). Is the character an ASCII letter or digit?
O(1). Is the character printable ASCII?
O(1). Is the character an ASCII decimal digit (0-9)?
O(1). Is the character an ASCII octal digit (0-7)?
O(1). Is the character an ASCII hexadecimal digit (0-9, a-f, A-F)?
O(1). Is the character a Unicode mark? (Simplified: always False)
O(1). Is the character ASCII punctuation?
O(1). Is the character an ASCII symbol?
O(1). Is the character in the ASCII range (0-127)?
O(1). Is the character in the Latin-1 range (0-255)?
O(1). Is the character an ASCII uppercase letter?
O(1). Is the character an ASCII lowercase letter?
O(1). Convert to uppercase (ASCII only).
O(1). Convert to lowercase (ASCII only).
O(1). Convert a hexadecimal digit to its integer value.
O(1). Convert an integer (0-15) to a hexadecimal digit.