Add CHOP command to rxstrings #10
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CHOP key count Removes characters from a value to a String key. If 'count' is positive or zero, it removes from the right of the string; if 'count' is negative, it removes from the left of the string. If |count| is greater than the string length, the value is set as an empty string. It is an error if the value is not a String. Integer Reply: the length of the string after the chop operation.
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@neomantra nice and useful, thanks! Looks good by a cursory glace so I plan to merge this. I'll keep this open for now until I revisit the redex modules in the near future to make them Redis v4 ready. |
Since Redis 4 was released without https://github.com/antirez/redis/pull/3718 this change was required to make CHOP work properly with Redis 4.0.0. Now all tests pass on stock Redis 4.0.0.
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I just updated this for the released Redis 4.0.0. All tests pass. |
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Don't merge this yet? I'm exploring the generalized form discussed in #12 |
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Note that tests for this module will fail until this redis pull request is merged.
CHOP key count
Removes characters from a value to a String key.
If 'count' is positive or zero, it removes from the right of the string;
if 'count' is negative, it removes from the left of the string.
If |count| is greater than the string length, the value is set as an empty string.
It is an error if the value is not a String.
Integer Reply: the length of the string after the chop operation.