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Results tagged with design-patterns
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user 13548
10
votes
2
answers
727
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Opposite of Alternatives
I was looking at this question (here) and I tried to find any thing gives the opposite of Alternatives. In other words, some pattern matching function that gives true when expression matches ALL patt …
- 20k
0
votes
0
answers
67
views
How to correctly use PatternTest (?) [duplicate]
This works fine:
{3, -5, 2, 7, -6, 3} /. x_ /; x < 0 :> 0
(*{3, 0, 2, 7, 0, 3}*)
and this works fine:
{3, -5, 2, 7, -6, 3} /. _?Negative :> 0
(*{3, 0, 2, 7, 0, 3}*)
I am trying to use something …
- 20k