无法在Ballerina上导入stringutils

Question

我正在使用以下代码尝试基本功能：

import ballerina/io;
import ballerina/stringutils;
 
public function main() {
    string str1 = "Comparing String";
    string str2 = "cOmpaRinG sTrinG";
    io:print("String '" + str1 + "' and '" + str2 + "' are");
    if (stringutils:equalsIgnoreCase(str1, str2)) {
        io:println(" equal");
    } else {
        io:println(" not equal");
    }
}

但我得到一个错误：

caio@german_shepherd test % bal run ./string.bal
Compiling source
    string.bal
ERROR [string.bal:(2:1,2:30)] cannot resolve module 'ballerina/stringutils'
ERROR [string.bal:(8:9,8:49)] undefined function 'equalsIgnoreCase'
ERROR [string.bal:(8:9,8:49)] undefined module 'stringutils'
error: compilation contains errors
caio@german_shepherd test % bal -v
Ballerina Swan Lake Beta 2
Language specification 2021R1
Update Tool 1.3.5
caio@german_shepherd test % sudo bal dist use slbeta2
Password:
'slbeta2' is the current active distribution version

在VSC上编辑代码时，我看到了同样的错误。遗漏了什么？

Answer 1

随着天鹅湖测试版1的发布，ballerina/stringutils模块被移除。与“正则表达式”相关的API已移至langlib 1模块，其余API可在ballerina/regex字符串库2中找到。

因此，我们需要按如下方式更新您的代码示例：

import ballerina/io;
 
public function main() {
    string str1 = "Comparing String";
    string str2 = "cOmpaRinG sTrinG";
    io:print("String '" + str1 + "' and '" + str2 + "' are");
    if ('string:equalsIgnoreCaseAscii(str1, str2)) {
        io:println(" equal");
    } else {
        io:println(" not equal");
    }
}

1

2