Multiple distinct objects: Difference between revisions
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=={{header|Mathematica}}== |
=={{header|Mathematica}}== |
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The mistake is often written as: |
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<lang Mathematica>{x, x, x, x} /. x -> Random[]</lang> |
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Here Random[] can be any expression that returns a new value which is incorrect since Random[] is only evaluated once. e.g. |
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which is incorrect since Random[] is only evaluated once. e.g. |
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{0.175125, 0.175125, 0.175125, 0.175125} |
{0.175125, 0.175125, 0.175125, 0.175125} |
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A correct version is: |
A correct version is: |
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{x, x, x, x} /. x :> Random[]</lang> |
<lang Mathematica>{x, x, x, x} /. x :> Random[]</lang> |
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which evaluates Random[] each time e.g. |
which evaluates Random[] each time e.g. |
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