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Fix unicode.split with seperators examples (#17176)

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* Fix unicode.split with seperators examples

https://nim-lang.org/docs/unicode.html#split.i%2Cstring%2CRune%2Cint didn't work with the set constructor `{}` so replaced it with a string that's converted to an openArray compatible type containing `Rune`s.

* Add runnableExamples to unicode.split

* Add runnableExamples to split with single separator too

* Simplify runnableExamples unicode.split

* Improve the rest of the runnableExamples with the simplified code

* Simplify runnableExamples of unicode.split even more

* Formatted unicode.split example

* Update lib/pure/unicode.nim

Co-authored-by: zetashift <rishi2@laptop.localdomain>
Co-authored-by: Timothee Cour <timothee.cour2@gmail.com>
This commit is contained in:
zetashift
2021-02-26 15:08:48 +01:00
committed by GitHub
parent 63f1c38f4e
commit c7d6e4c6a6
1 changed files with 25 additions and 58 deletions
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83
lib/pure/unicode.nim
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@@ -955,43 +955,25 @@ iterator split*(s: string, seps: openArray[Rune] = unicodeSpaces,
## Splits the unicode string ``s`` into substrings using a group of separators.
##
## Substrings are separated by a substring containing only ``seps``.
##
## .. code-block:: nim
## for word in split("this\lis an\texample"):
## writeLine(stdout, word)
##
## ...generates this output:
##
## .. code-block::
## "this"
## "is"
## "an"
## "example"
##
## And the following code:
##
## .. code-block:: nim
## for word in split("this:is;an$example", {';', ':', '$'}):
## writeLine(stdout, word)
##
## ...produces the same output as the first example. The code:
##
## .. code-block:: nim
## let date = "2012-11-20T22:08:08.398990"
## let separators = {' ', '-', ':', 'T'}
## for number in split(date, separators):
## writeLine(stdout, number)
##
## ...results in:
##
## .. code-block::
## "2012"
## "11"
## "20"
## "22"
## "08"
## "08.398990"
##
runnableExamples:
import std/sequtils
assert toSeq("hÃllo\lthis\lis an\texample\l是".split) ==
@["hÃllo", "this", "is", "an", "example", "是"]
# And the following code splits the same string using a sequence of Runes.
assert toSeq(split("añyóng:hÃllo;是$example", ";:$".toRunes)) ==
@["añyóng", "hÃllo", "是", "example"]
# example with a `Rune` separator and unused one `;`:
assert toSeq(split("ab是de:f:", ";:是".toRunes)) == @["ab", "de", "f", ""]
# Another example that splits a string containing a date.
let date = "2012-11-20T22:08:08.398990"
assert toSeq(split(date, " -:T".toRunes)) ==
@["2012", "11", "20", "22", "08", "08.398990"]
splitCommon(s, seps, maxsplit)
iterator splitWhitespace*(s: string): string =
@@ -1010,28 +992,13 @@ proc splitWhitespace*(s: string): seq[string] {.noSideEffect,
iterator split*(s: string, sep: Rune, maxsplit: int = -1): string =
## Splits the unicode string ``s`` into substrings using a single separator.
##
## Substrings are separated by the rune ``sep``.
## The code:
##
## .. code-block:: nim
## for word in split(";;this;is;an;;example;;;", ';'):
## writeLine(stdout, word)
##
## Results in:
##
## .. code-block::
## ""
## ""
## "this"
## "is"
## "an"
## ""
## "example"
## ""
## ""
## ""
##
runnableExamples:
import std/sequtils
assert toSeq(split(";;hÃllo;this;is;an;;example;;;是", ";".runeAt(0))) ==
@["", "", "hÃllo", "this", "is", "an", "", "example", "", "", "是"]
splitCommon(s, sep, maxsplit)
proc split*(s: string, seps: openArray[Rune] = unicodeSpaces, maxsplit: int = -1):