78 lines
5.2 KiB
Factor
78 lines
5.2 KiB
Factor
USING: help.markup help.syntax sequences strings ;
|
|
IN: splitting
|
|
|
|
ARTICLE: "sequences-split" "Splitting sequences"
|
|
"Splitting sequences at occurrences of subsequences:"
|
|
{ $subsections
|
|
?head
|
|
?head-slice
|
|
?tail
|
|
?tail-slice
|
|
split1
|
|
split1-slice
|
|
split1-when
|
|
split1-last
|
|
split1-last-slice
|
|
split
|
|
split-when
|
|
}
|
|
"Splitting a string into lines:"
|
|
{ $subsections string-lines } ;
|
|
|
|
ABOUT: "sequences-split"
|
|
|
|
HELP: split1
|
|
{ $values { "seq" "a sequence" } { "subseq" "a sequence" } { "before" "a new sequence" } { "after" "a new sequence" } }
|
|
{ $description "Splits " { $snippet "seq" } " at the first occurrence of " { $snippet "subseq" } ", and outputs the pieces before and after the split. If " { $snippet "subseq" } " does not occur in " { $snippet "seq" } ", then " { $snippet "before" } " is just " { $snippet "seq" } " and " { $snippet "after" } " is " { $link f } "." } ;
|
|
|
|
HELP: split1-slice
|
|
{ $values { "seq" "a sequence" } { "subseq" "a sequence" } { "before-slice" slice } { "after-slice" slice } }
|
|
{ $description "Splits " { $snippet "seq" } " at the first occurrence of " { $snippet "subseq" } ", and outputs the pieces before and after the split as slices. If " { $snippet "subseq" } " does not occur in " { $snippet "seq" } ", then " { $snippet "before" } " is just " { $snippet "seq" } " and " { $snippet "after" } " is " { $link f } "." } ;
|
|
|
|
HELP: split1-when
|
|
{ $values { "seq" "a sequence" } { "quot" { $quotation "( ... elt -- ... ? )" } } { "before" "a new sequence" } { "after" "a new sequence" } }
|
|
{ $description "Splits " { $snippet "seq" } " at the first occurrence of an element for which " { $snippet "quot" } " gives a true output and outputs the pieces before and after the split." } ;
|
|
|
|
HELP: split1-last
|
|
{ $values { "seq" "a sequence" } { "subseq" "a sequence" } { "before" "a new sequence" } { "after" "a new sequence" } }
|
|
{ $description "Splits " { $snippet "seq" } " at the last occurrence of " { $snippet "subseq" } ", and outputs the pieces before and after the split. If " { $snippet "subseq" } " does not occur in " { $snippet "seq" } ", then " { $snippet "before" } " is just " { $snippet "seq" } " and " { $snippet "after" } " is " { $link f } "." } ;
|
|
|
|
HELP: split1-last-slice
|
|
{ $values { "seq" "a sequence" } { "subseq" "a sequence" } { "before-slice" slice } { "after-slice" slice } }
|
|
{ $description "Splits " { $snippet "seq" } " at the last occurrence of " { $snippet "subseq" } ", and outputs the pieces before and after the split as slices. If " { $snippet "subseq" } " does not occur in " { $snippet "seq" } ", then " { $snippet "before" } " is just " { $snippet "seq" } " and " { $snippet "after" } " is " { $link f } "." } ;
|
|
|
|
{ split1 split1-slice split1-last split1-last-slice } related-words
|
|
|
|
HELP: split-when
|
|
{ $values { "seq" "a sequence" } { "quot" { $quotation "( ... elt -- ... ? )" } } { "pieces" "a new array" } }
|
|
{ $description "Splits " { $snippet "seq" } " at each occurrence of an element for which " { $snippet "quot" } " gives a true output and outputs an array of pieces. The pieces do not include the elements along which the sequence was split." }
|
|
{ $examples { $example "USING: ascii kernel prettyprint splitting ;" "\"hello,world-how.are:you\" [ letter? not ] split-when ." "{ \"hello\" \"world\" \"how\" \"are\" \"you\" }" } } ;
|
|
|
|
HELP: split
|
|
{ $values { "seq" "a sequence" } { "separators" "a sequence" } { "pieces" "a new array" } }
|
|
{ $description "Splits " { $snippet "seq" } " at each occurrence of an element of " { $snippet "separators" } " and outputs an array of pieces. The pieces do not include the elements along which the sequence was split." }
|
|
{ $examples { $example "USING: prettyprint splitting ;" "\"hello world-how are you?\" \" -\" split ." "{ \"hello\" \"world\" \"how\" \"are\" \"you?\" }" } } ;
|
|
|
|
HELP: ?head
|
|
{ $values { "seq" "a sequence" } { "begin" "a sequence" } { "newseq" "a new sequence" } { "?" "a boolean" } }
|
|
{ $description "Tests if " { $snippet "seq" } " starts with " { $snippet "begin" } ". If there is a match, outputs the subrange of " { $snippet "seq" } " excluding " { $snippet "begin" } ", and " { $link t } ". If there is no match, outputs " { $snippet "seq" } " and " { $link f } "." } ;
|
|
|
|
HELP: ?head-slice
|
|
{ $values { "seq" "a sequence" } { "begin" "a sequence" } { "newseq" slice } { "?" "a boolean" } }
|
|
{ $description "Like " { $link ?head } ", except the resulting sequence is a " { $link slice } "." } ;
|
|
|
|
HELP: ?tail
|
|
{ $values { "seq" "a sequence" } { "end" "a sequence" } { "newseq" "a new sequence" } { "?" "a boolean" } }
|
|
{ $description "Tests if " { $snippet "seq" } " ends with " { $snippet "end" } ". If there is a match, outputs the subrange of " { $snippet "seq" } " excluding " { $snippet "end" } ", and " { $link t } ". If there is no match, outputs " { $snippet "seq" } " and " { $link f } "." } ;
|
|
|
|
HELP: ?tail-slice
|
|
{ $values { "seq" "a sequence" } { "end" "a sequence" } { "newseq" slice } { "?" "a boolean" } }
|
|
{ $description "Like " { $link ?tail } ", except the resulting sequence is a " { $link slice } "." } ;
|
|
|
|
HELP: string-lines
|
|
{ $values { "str" string } { "seq" "a sequence of strings" } }
|
|
{ $description "Splits a string along line breaks." }
|
|
{ $examples
|
|
{ $example "USING: prettyprint splitting ;" "\"Hello\\r\\nworld\\n\" string-lines ." "{ \"Hello\" \"world\" \"\" }" }
|
|
} ;
|