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Prefer evaluation over test for arithmetic expression

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Usage of `(( ... ))` over `[[ ... ]]` is preferred for arithmetic expression
since the former is less error prone.

Also, unset local variable whenever possible.
This commit is contained in:
Indrajit Raychaudhuri
2017-07-07 23:27:18 -05:00
committed by Kaleb Elwert
parent e3520b737f
commit 3f99519021
2 changed files with 4 additions and 2 deletions
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CONTRIBUTING.md
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@@ -30,6 +30,7 @@ there are a number of additional things to keep in mind.
- Local variables should be used whenever possible.
- Prefer `zstyle` over environment variables for configuration.
- Prefer (( ... )) over [[ ... ]] for arithmetic expression.
- Use the function keyword to define functions.
- The 80 character hard limit can be waved for readability.