40 packages

Closures/Value capture

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Collections

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Color of a screen pixel

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Combinations

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Command-line arguments

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Comments

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Conditional structures

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Conway's Game of Life

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Copy a string

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Copy stdin to stdout

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Count in octal

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Count occurrences of a substring

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CRC-32

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Create a file

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Create a two-dimensional array at runtime

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Cumulative standard deviation

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Currency

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Date format

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Date manipulation

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Day of the week

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Hash from two arrays

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Hello world/Graphical

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Hello world/Line printer

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Hello world/Newline omission

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Hello world/Standard error

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