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Update snippet 'Parsing string expressions, the lazy way'
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Sometimes you'd be surprised at what functionality you can find inside the .Net framework. Apparently the DataTable object can compute string expressions. Nice for testing your own parser implementation, and/or for lazy coders like me. Note that the DataTable is created only once and reused with each function call.
Source code
let eval = let dt = new System.Data.DataTable() fun expr -> System.Convert.ToDouble(dt.Compute(expr,"")) // usage (FSI) // > eval "(1+5)*7/((3+(2-1))/(7-3))";; // val it : float = 42.0
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expression
parsing
expression
parsing
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