NumberQ

Tilgjengelig

Tests whether an expression is a (literal) numeric value.

Former

NumberQ[expr]

Verifiserte eksemplerNumberQ[3.5] → True NumberQ["abc"] → False

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Emner

Atomic Elements Of Expressions - Numbers »
Expressions - Expression Testing »
Patterns - Restrictions on Patterns
Representation Of Numbers - Testing for Types
Testing Expressions - Numerical Properties

Relatert

NumericQ RealValuedNumberQ RealValuedNumericQ IntegerQ MachineNumberQ TrueQ Complexes Assuming Integer Complex IntegerDigits Precision

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