Pattern matching(패턴매칭)

published by Houdini on Wed, 06/24/2009 - 00:51

String patterns

You can use string patterns anywhere an expression function needs a name (such as a parameter or node name) to match multiple things at once.

* Matches any string.
? Matches any single character.
[chars]

Matches any of the characters between the square brackets. This does not support character ranges using a hyphen (you cannot do ).
^pattern Removes strings matching pattern from the previous match.
@pattern Matches object group, channel group, and/or bundle (depending on context).

Examples:

geo* Matches everything beginning with “geo”.
[gG]eo* Matches everything beginning with “geo” or “Geo”.
?eo* Matches everything that has any character followed by “eo” and then any number of characters.
* ^geo1 Matches everything except the string “geo1”.

Numeric patterns in the Group node

* Matches all points/primitives.
number Matches a single number.
start-end Matches all numbers in a range (inclusive).
start-end:step Matches all numbers in a range, matching only every stepthe number.
!pattern Matches everything except pattern.
^pattern Removes numbers matching pattern from the previous match.

Examples:

10-20 Match numbers 10 through 20 (including 10 and 20).
0-30:2 Match every other number between 0 and 30 (0, 2, 4, 6, … 30).
0-30:2,3 Match every 2 of 3 numbers between 0 and 30 (0, 1, 3, 4, 6, 7, … 30).
!3-5 Match everything except 3-5.
0-100:2 ^10-20 Match every other number between 0 and 100 except for numbers between 10 and 20.

Notes

  • Separate multiple patterns with spaces. Commas are not allowed as separator characters.

 

Comments

Happy_Challenge's picture

Happy_Challenge

Tue, 06/30/2009 - 18:24

Numeric patterns in the Group node의 Example에서 이부분-

0-30:2,3 Match every 2 of 3 numbers between 0 and 30 (0, 1, 3, 4, 6, 7, … 30).

2,3 이면 [0, 2, 3, 5, 6, 8, 9, … 30]  이든지 0-30:1,3 이어야 맞는 것 같아서요~

We are the Captains of our souls.

Houdini

Mon, 07/06/2009 - 01:03

리턴되는 값을 취하시면 될거 같습니다. SESI 도움말을 grab한거라 문제가 있을 수도 있어요. 암튼 좋은 지적 감사합니다. 꼭 확인해서 스샷 부탁드립니다. 

Happy_Challenge's picture

Happy_Challenge

Tue, 07/07/2009 - 21:20

파일 첨부가 안되서 북페이지에 같이  올려놨습니다.

첨부해서 이미지링크하는게 좋더라구요 ㅎㅎ

제목은 '패턴매칭의 오해' 입니다.

We are the Captains of our souls.