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caasi/if-err.ls

Created September 20, 2019 06:07
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if err in livescript backcalls
Raw
if-err.ls
success = (f) -> f undefined, 1
failure = (f) -> f new Error('oops')
err, value <- success
console.error err if err
console.log value
err, value <- failure
console.error err if err
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