Converts a string to camelcase.
Use String.replaceAllMapped()
to break the string into words and capitalize the first letter of each word, using a RegExp
.
Use String.replaceAll()
to remove invalid separator characters (_
, -
and spaces).
Finally, use String.toLowerCase()
and to convert the first letter to lowercase.
代码实现
String toCamelCase(String str) {
String s = str
.replaceAllMapped(
RegExp(
r'[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+'),
(Match m) =>
"${m[0][0].toUpperCase()}${m[0].substring(1).toLowerCase()}")
.replaceAll(RegExp(r'(_|-|\s)+'), '');
return s[0].toLowerCase() + s.substring(1);
}
使用样例
toCamelCase('some_database_field_name'); // 'someDatabaseFieldName'
toCamelCase('Some label that needs to be camelized'); // 'someLabelThatNeedsToBeCamelized'
toCamelCase('some-javascript-property'); // 'someJavascriptProperty'
toCamelCase('some-mixed_string with spaces_underscores-and-hyphens'); // 'someMixedStringWithSpacesUnderscoresAndHyphens'