25 lines
782 B
Plaintext
25 lines
782 B
Plaintext
The use of a result data structure with file I/O improves performance because it moves the data in one large block from file to data structure (or vice versa) rather than field by field.
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Additionally using a data structure can limit the problems caused by having bad data in a file. Without a data structure, the entire ``++READ++`` operation will fail at the first bad value. With one, the error comes only when the bad field is used.
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== Noncompliant Code Example
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F MyFile IF E Disk
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* Noncompliant
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C READ Record1
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== Compliant Solution
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F MyFile IF E Disk
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D InputData DS LikeRec(Record1)
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C READ Record1 InputData
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