17 lines
464 B
Plaintext
17 lines
464 B
Plaintext
!import "../../lib/base.tri" !Local
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!import "../../lib/list.tri" !Local
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!import "../../lib/io.tri" !Local
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-- readFile returns a Result. matchResult branches on ok / err.
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-- Run with --allow-read PATH or --unsafe-io.
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safeRead = (path :
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bind (readFile path)
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(result :
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matchResult
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(err rest : pure "ERROR: Unable to read file")
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(contents rest : pure contents)
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result))
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main = io (safeRead "demos/interactionTrees/greet.tri")
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