String case: Difference between revisions
→{{header|Wren}}: Replaced original with a more extensive solution.
(→{{header|Nim}}: case not handled correctly) |
(→{{header|Wren}}: Replaced original with a more extensive solution.) |
||
Line 3,526:
=={{header|Wren}}==
{{libheader|Wren-str}}
The 'Str' class supports the following methods:
<syntaxhighlight lang="ecmascript">import "/str" for Str▼
# ''lower'' - converts all letters to lower case
# ''upper'' - converts all letters to upper case
System.print(Str.upper(s))▼
# ''capitalize'' - converts only the first letter to upper case
System.print(Str.lower(s))</syntaxhighlight>▼
# ''title'' - converts the first letter of each word to upper case
# ''swapCase'' - swaps the case of each letter
However, support is limited to letters which have both lower and upper case variants with codepoints < 256. This means that the lower case letters 'ß' and 'ÿ' are never changed by these methods. Although it would be possible to regard 'SS' as the upper case equivalent of 'ß', unfortunately this might not 'round-trip' and would not be compatible with the ''Char.upper'' method in any case. It has not therefore been done.
The 'Utf8' class recently acquired the first four of the above methods though with considerably wider (albeit still incomplete) Unicode coverage. In particular the upper case variants 'ẞ' and 'Ÿ' are now supported - the former was introduced into official German orthography in 2017 (though is optional) and, of course, now round-trips. Title case for 4 supported digraphs is automatically applied by the ''capitalize'' or ''title'' methods when they are the first character of the string (or, word, in the case of the latter).
▲<syntaxhighlight lang="ecmascript">import "/str" for Str, Utf8
var strs = ["alphaBETA", "ação", "o'hare O'HARE o’hare don't"]
System.print("Using 'Str' class methods:")
for (s in strs) {
System.print(" original : %(s)")
System.print(" lower : %(Str.lower(s))")
▲ System.print(" upper : %(Str.upper(s))")
System.print(" capitalize : %(Str.capitalize(s))")
System.print(" title : %(Str.title(s))")
System.print(" swapCase : %(Str.swapCase(s))")
System.print()
}
var strs2 = ["Stroßbùrri", "ĥåçýджк", "DŽLjnj"]
System.print("Using 'Utf8' class methods:")
for (s in strs2) {
System.print(" original : %(s)")
System.print(" lower : %(Utf8.lower(s))")
System.print(" upper : %(Utf8.upper(s))")
System.print(" capitalize : %(Utf8.capitalize(s))")
System.print(" title : %(Utf8.title(s))")
System.print()
{{out}}
<pre>
Using 'Str' class methods:
original : alphaBETA
lower : alphabeta
upper : ALPHABETA
capitalize : AlphaBETA
title : AlphaBETA
swapCase : ALPHAbeta
original : ação
lower : ação
upper : AÇÃO
capitalize : Ação
title : Ação
swapCase : AÇÃO
original : o'hare O'HARE o’hare don't
lower : o'hare o'hare o’hare don't
upper : O'HARE O'HARE O’HARE DON'T
capitalize : O'hare O'HARE o’hare don't
title : O'hare O'HARE O’hare Don't
swapCase : O'HARE o'hare O’HARE DON'T
Using 'Utf8' class methods:
original : Stroßbùrri
lower : stroßbùrri
upper : STROẞBÙRRI
capitalize : Stroßbùrri
title : Stroßbùrri
original : ĥåçýджк
lower : ĥåçýджк
upper : ĤÅÇÝДЖК
capitalize : Ĥåçýджк
title : Ĥåçýджк
original : DŽLjnj
lower : džljnj
upper : DŽLJNJ
capitalize : DžLjnj
title : DžLjnj
</pre>
| |||