Difference between revisions of "Documentation/How Tos/Calc: ISERROR function"
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== ISERROR == | == ISERROR == | ||
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=== Example: === | === Example: === | ||
<tt>'''ISERROR(SQRT(-1))'''</tt> | <tt>'''ISERROR(SQRT(-1))'''</tt> | ||
− | : returns <tt>'''TRUE'''</tt>, because taking the | + | : returns <tt>'''TRUE'''</tt>, because taking the square root of -1 is an error. |
<tt>'''ISERROR(C5)'''</tt> | <tt>'''ISERROR(C5)'''</tt> | ||
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* <tt>'''CHOOSE(0;"A";"B";"C";"D")'''</tt> returns <tt>'''Err:502'''</tt> (correctly - the index is out of range) but <tt>'''ISERROR(CHOOSE(0;"A";"B";"C";"D"))'''</tt> also returns <tt>'''Err:502'''</tt>, rather than <tt>'''TRUE'''</tt>. The error is propagated rather than evaluated. | * <tt>'''CHOOSE(0;"A";"B";"C";"D")'''</tt> returns <tt>'''Err:502'''</tt> (correctly - the index is out of range) but <tt>'''ISERROR(CHOOSE(0;"A";"B";"C";"D"))'''</tt> also returns <tt>'''Err:502'''</tt>, rather than <tt>'''TRUE'''</tt>. The error is propagated rather than evaluated. | ||
− | {{ | + | {{SeeAlso|EN| |
* [[Documentation/How_Tos/Calc: ISERR function|ISERR]] | * [[Documentation/How_Tos/Calc: ISERR function|ISERR]] | ||
* [[Documentation/How_Tos/Calc: ISNA function|ISNA]] | * [[Documentation/How_Tos/Calc: ISNA function|ISNA]] |
Latest revision as of 13:15, 31 January 2024
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ISERROR
Tests for any error value.
Syntax:
ISERROR(value)
- Returns TRUE if value refers to or evaluates to any error value, including #N/A, and FALSE otherwise.
- Use the ISERR function to test for any errors except #N/A.
Example:
ISERROR(SQRT(-1))
- returns TRUE, because taking the square root of -1 is an error.
ISERROR(C5)
- where C5 contains 123, returns FALSE, because 123 is not an error.
ISERROR(NA())
- returns TRUE, because NA() returns the #N/A error.
Issues:
- CHOOSE(0;"A";"B";"C";"D") returns Err:502 (correctly - the index is out of range) but ISERROR(CHOOSE(0;"A";"B";"C";"D")) also returns Err:502, rather than TRUE. The error is propagated rather than evaluated.
{{#switch:EN
| RU = Смотрите также:
| UA = Дивіться також:
| EN = See Also
| PT = Ver também
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