in函数
x=dict(`IBM`GOOG`MSFT, (1 2 3, 4 5 6, 7 8 9));
`IBM in x
可以看下这篇手册 https://www.dolphindb.cn/cn/help/DataTypesandStructures/DataForms/Dictionary.html
in函数
x=dict(`IBM`GOOG`MSFT, (1 2 3, 4 5 6, 7 8 9));
`IBM in x
可以看下这篇手册 https://www.dolphindb.cn/cn/help/DataTypesandStructures/DataForms/Dictionary.html