GH_ExpressionParser using '>=', '<=', '<>'.

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Permalink Reply by David Rutten on July 21, 2016 at 4:22pm

The expression language cannot handle operators of more than one character. You need to use the GH_ExpressionSyntaxWriter type to convert strings that people like to type into strings that the parser understands.

Permalink Reply by David Rutten on July 21, 2016 at 4:24pm

This, basically:

string exp = Grasshopper.Kernel.Expressions.GH_ExpressionSyntaxWriter.RewriteAll("4<=3");

A = New Grasshopper.Kernel.Expressions.GH_ExpressionParser(True).Evaluate(exp)._Bool

Incidentally if you just use GH_Convert.ParseExpression this is all done for you.

Permalink Reply by Daniel González Abalde on July 21, 2016 at 7:27pm

Great, thanks David :)