isAscii

Selects the first 128 characters of the Unicode character set, corresponding to the ASCII character set.

O(n) Test whether Text contains only ASCII code-points (i.e. only U+0000 through U+007F). This is a more efficient version of all isAscii.

>>> isAscii ""
True

>>> isAscii "abc\NUL"
True

>>> isAscii "abcd€"
False

isAscii t == all (< '\x80') t

O(n) Test whether Text contains only ASCII code-points (i.e. only U+0000 through U+007F). This is a more efficient version of all isAscii.

>>> isAscii ""
True

>>> isAscii "abc\NUL"
True

>>> isAscii "abcd€"
False

isAscii t == all (< '\x80') t

Test whether ShortText contains only ASCII code-points (i.e. only U+0000 through U+007F). This is a more efficient version of all isAscii.

>>> isAscii ""
True

>>> isAscii "abc\NUL"
True

>>> isAscii "abcd€"
False

isAscii t == all (< '\x80') t

Ascii characters

Is this an ASCII character, i.e., the first 128 characters.

Selects ASCII lower-case letters, i.e. characters satisfying both isAscii and isLower.

Selects ASCII upper-case letters, i.e. characters satisfying both isAscii and isUpper.

Select alphabetic characters in the ascii character set. Pre-release

Ascii letters.

Ascii letters and digits.

>>> isAsciiAlphaNum 'a'
True

>>> isAsciiAlphaNum 'ä'
False

Is this an ASCII Lower-case letter? i.e., a thru z

>>> prove $ \c -> isAsciiLower c .<=> ord c .>= ord (literal 'a') .&& ord c .<= ord (literal 'z')
Q.E.D.

>>> prove $ \c -> isAsciiLower c .<=> isAscii c .&& isLowerL1 c
Q.E.D.

Is this an ASCII Upper-case letter? i.e., A thru Z

>>> prove $ \c -> isAsciiUpper c .<=> ord c .>= ord (literal 'A') .&& ord c .<= ord (literal 'Z')
Q.E.D.

>>> prove $ \c -> isAsciiUpper c .<=> isAscii c .&& isUpperL1 c
Q.E.D.

Tests if hostname contains segments with an ASCII-compatible encoding of an Internationalized Domain Name. If this returns True, you should decode the hostname with hostnameToUnicode before displaying it to the user. Note that a hostname might contain a mix of encoded and unencoded segments, and so it is possible for hostnameIsNonAscii and hostnameIsAsciiEncoded to both return True for a name. Since: 2.22

Determines if a string is pure ASCII. A string is pure ASCII if it contains no bytes with the high bit set. Since: 2.40