StringExtension extension

String扩展

on

Properties

byteLength → int

Available on String, provided by the StringExtension extension

获取字符串的字节长度（UTF-8编码）
no setter
capitalize → String

Available on String, provided by the StringExtension extension

单词首字母大写
no setter
capitalizedLetters → String

Available on String, provided by the StringExtension extension

句子每个单词首字母大写
no setter
displayWidth → int

Available on String, provided by the StringExtension extension

计算字符串的显示宽度（中文字符按2个字符宽度计算）
no setter
extractNumbers → List<String>

Available on String, provided by the StringExtension extension

提取所有数字
no setter
isAlpha → bool

Available on String, provided by the StringExtension extension

检查是否只包含字母
no setter
isAlphanumeric → bool

Available on String, provided by the StringExtension extension

检查是否只包含字母和数字
no setter
isBlank → bool

Available on String, provided by the StringExtension extension

---------检查------------------------------ 检查字符串是否为空或仅包含空白字符
no setter
isNotBlank → bool

Available on String, provided by the StringExtension extension

检查字符串是否不为空且不仅包含空白字符
no setter
isNumeric → bool

Available on String, provided by the StringExtension extension

检查是否只包含数字
no setter
isValidJson → bool

Available on String, provided by the StringExtension extension

检查是否为有效的JSON格式
no setter
onlyAlphanumeric → String

Available on String, provided by the StringExtension extension

只保留字母和数字
no setter
onlyLetters → String

Available on String, provided by the StringExtension extension

只保留字母
no setter
onlyNumbers → String

Available on String, provided by the StringExtension extension

只保留数字
no setter
removeAllNonAlphanumeric → String

Available on String, provided by the StringExtension extension

移除所有非字母数字字符
no setter
removeAllWhitespace → String

Available on String, provided by the StringExtension extension

---------操作------------------------------ 移除所有空白字符（包括空格、制表符、换行符等）
no setter
reverse → String

Available on String, provided by the StringExtension extension

反转字符串
no setter
toCamelCase → String

Available on String, provided by the StringExtension extension

将字符串转换为驼峰命名（首字母小写）
no setter
toCNYFormat → String

Available on String, provided by the StringExtension extension

中文金额格式（使用人民币符号）
no setter
toPascalCase → String

Available on String, provided by the StringExtension extension

将字符串转换为帕斯卡命名（首字母大写）
no setter
toSnakeCase → String

Available on String, provided by the StringExtension extension

将字符串转换为蛇形命名 (小写字母和下划线)
no setter
toUSDFormat → String

Available on String, provided by the StringExtension extension

美元格式
no setter
truncate10 → String

Available on String, provided by the StringExtension extension

no setter

Methods

countOccurrences(String pattern) → int

Available on String, provided by the StringExtension extension

统计字符出现次数
safeSubstring(int start, [int? end]) → String

Available on String, provided by the StringExtension extension

安全的substring，防止越界
toDouble() → double?

Available on String, provided by the StringExtension extension

转换成double类型
toInt() → int?

Available on String, provided by the StringExtension extension

转换成int类型
toMoneyFormat({int decimalPlaces = 2, String thousandSeparator = ',', String decimalSeparator = '.'}) → String

Available on String, provided by the StringExtension extension

转换成金额格式 decimalPlaces 保留的小数位数，默认为2位 thousandSeparator 千分位分隔符，默认为逗号 decimalSeparator 小数点分隔符，默认为点号
truncate(int maxLength, [String ellipsis = '...']) → String

Available on String, provided by the StringExtension extension

截取字符串到指定长度，如果超长则添加省略号
truncateByWidth(int maxWidth, [String ellipsis = '...']) → String

Available on String, provided by the StringExtension extension

按显示宽度截取字符串
whenEmpty(String defaultValue) → String

Available on String, provided by the StringExtension extension

为空字符串增加默认值
wordWrap(int width) → String

Available on String, provided by the StringExtension extension

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