71 lines
1.8 KiB
Markdown
71 lines
1.8 KiB
Markdown
# Utility modules
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These are various utility modules for other HackerBase libraries.
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## util-time [module]
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(import util-time)
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Compatibility module for the differences between chicken scheme
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version 5.2 and earlier and 5.3 and on.
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### current-util-milliseconds [procedure]
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(current-util-milliseconds)
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Returns the number of milliseconds since process startup.
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Under chicken scheme <5.3 it uses ```current-milliseconds``` and for
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chicken scheme >=5.3 it uses ```current-process-milliseconds```.
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Without this module compilation with ```current-milliseconds```
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results in warnings on chicken scheme >=5.3 and compilation under
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chicken scheme <5.3 results in error with
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```current-process-milliseconds```.
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### seconds->iso-date-string [procedure]
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(seconds->iso-date-string . args)
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Converts given seconds to ISO date string YYYY-MM-DD. Defaults to ```(current-seconds)```.
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### today/iso [procedure]
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(today/iso)
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Returns today as ISO date string YYYY-MM-DD.
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## util-csv [module]
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(import util-csv)
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This module provides a very simple, incomplete and incorrect but fast
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CSV loader.
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### (make-csv-line-parser separator string-delimiter) [procedure]
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((make-csv-line-parser separator string-delimiter) line)
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Curried version of fast CSV line parser with given separator and string delimiter.
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* ```separator``` - separator character
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* ```string-delimiger``` - string quotation character
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* ```line``` - line to parse
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### csv-parse-lines [procedure]
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(csv-parse-lines lines separator: (separator ;) string-delimiter: (string-delimiter "))
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Parses given lines and returns list of lists of strings.
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### csv-parse [procedure]
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(csv-parse fn . args)
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Uses ```csv-parse-lines``` on lines read from given file ```fn```.
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### csv-split-header [procedure]
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(csv-split-header csv)
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Splits given loaded CSV into two tables at the first empty row.
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