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Variable substitution should be performed only once, not on each evaluation step #11

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p-e-w opened this issue Apr 4, 2022 · 0 comments
Open

Variable substitution should be performed only once, not on each evaluation step #11

p-e-w opened this issue Apr 4, 2022 · 0 comments

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@p-e-w
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p-e-w commented Apr 4, 2022

The current implementation can cause infinite loops and infinite recursion, for example with this input:

f(x) = x
f(x)

The problem here is that the substituted expression is itself a variable with the same identifier as the variable it is substituted for, so substitution continues forever.
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