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Using bare vars is more efficient because it makes the builtin `math` expression cache more useful. That's because if you prefix each var with a dollar-sign then the fish parser expands it before `math` is run. Something like `math x + 1` can be cached since the expression is the same each time it is run. But if you do `math $x + 1` and x==1 then you're effectively executing `math 1 + 1`. And if x==2 the next time then you're running `math 2 + 1`. Which makes the expression cache much less effective. |
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| .. | ||
| completions | ||
| functions | ||
| groff | ||
| tools | ||
| __fish_build_paths.fish.in | ||
| config.fish | ||