scala upickle/ujson中JSON null的惯用处理 我是Scala新手,希望学习解决常见问题的惯用方法,如pythonicforPython。我的问题是如何使用upickle读取JSON数据,其中JSON值在存在时包含字符串,在不存在时包含null。我想用一个自定义值来替换null。一个简单的例子: import upickle.default._ val jsonString = """[{"alway...
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