Exceptions: Difference between revisions
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Langurmonkey (talk | contribs) |
Langurmonkey (talk | contribs) |
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</pre> |
</pre> |
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=={{header| |
=={{header|langur}}== |
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Exceptions in langur are hashes guaranteed to contain certain fields, even if they're empty. |
Exceptions in langur are hashes guaranteed to contain certain fields, even if they're empty. |
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An else section on a catch is optional (available from version 0.5.0 and higher). |
An else section on a catch is optional (available from version 0.5.0 and higher). |
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<lang |
<lang langur># do something |
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throw "not a math exception" |
throw "not a math exception" |
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A shortened catch does not allow an else section (action for no exception). |
A shortened catch does not allow an else section (action for no exception). |
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<lang |
<lang langur>catch if .err["cat"] == "math" { |
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# change result |
# change result |
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} else { |
} else { |
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}</lang> |
}</lang> |
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<lang |
<lang langur>val .safediv = f { .x / .y ; catch 0 } |
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.safediv(7, 7) # 1 |
.safediv(7, 7) # 1 |
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.safediv(7, 0) # 0</lang> |
.safediv(7, 0) # 0</lang> |
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