Timeline for How to make a pattern to match?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Sep 19, 2016 at 19:01 | comment | added | Bob Hanlon | @Mr.Wizard - edited per your recommendation. Thanks. | |
| Sep 19, 2016 at 18:58 | history | edited | Bob Hanlon | CC BY-SA 3.0 |
Per Mr. Wizard's recommendation, added additional checks
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| Sep 19, 2016 at 10:49 | comment | added | Michael E2 |
An alternative one might use is MatchQ[#[[position]], val] instead of #[[position]] == val, and then val could be any pattern. One should beware that with ==, elements will match that are sufficiently close numerically to be considered equal, whereas with MatchQ, they have to be exactly the same. So == will be a superior approach in some applications and not in others.
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| Sep 19, 2016 at 9:46 | comment | added | Mr.Wizard |
This is the method I typically use, however consider adding a Length check to avoid e.g. {1, 2}[[3]], i.e. Length[#] >= position && #[[position]] == val
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| Sep 18, 2016 at 22:24 | history | answered | Bob Hanlon | CC BY-SA 3.0 |