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How to Write Conditional Change Expressions？

//case1
x={"a01","b02","c003"};
dt << select where(:name=="a01"|:name=="b02"|:name=="c003");

//case2
x={"a01","b02","c003","e03"};
dt << select where(:name=="a01"|:name=="b02"|:name=="c003"|:name=="e03");

//case3
x={"a01"};
dt << select where(:name=="a01")

I have a question: as in the three cases of the code below, I now have a list x that changes, so the code for the selection condition also changes, how can I write a piece of code with an expression that takes care of all the x's that change.

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