NimString extension

on

• String

Methods

isHighSurrogate(int codeUnit) → bool

isLowSurrogate(int codeUnit) → bool

subStringWithMaxLength(int maxLen, {int startLen = 2, int endLen = 2, String ellipsis = '...'}) → String

根据最大字符限制截取字符串 例：xx...xx emoji表情按一个字符算，不截取

subStringWithoutEmoji(int start, [int? end]) → String

截取字符串，但是不截断emoji表情 emoji表情占两个字符，high+low