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// Read a utf8 string and count all the occurrences of each letter found
`export letter_table : ([string]
table : Map[Char; U64] $ ()
@ string {[letter]
? table `has letter {
^ table `get letter {[count] count +: 1 }
} {
table `set (letter; 1)
}
}
table
)
`is_main ([]
`use "sys" [args]
? 3 != `length args {
`return `error String $ (
"#BOLD#RED#Got: %#\n" `format " " `join args
"#BOLD#WHITE#Usage: % % <file...>#\n" `format (args `get 0; args `get 1)
)
}
read_log : ([filename]
`use "io" [open; read]
`log letter_table `sync read `sync open `sync filename
)
@ 2 .. `length args {[arg_index] read_log `async args `get arg_index }
)
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