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Clarify documentation of global variables, fixes #44695 #44709

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Mar 24, 2022
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Clarify documentation of global variables, fixes #44695 #44709

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2 changes: 1 addition & 1 deletion doc/src/manual/performance-tips.md
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Expand Up @@ -13,7 +13,7 @@ The functions should take arguments, instead of operating directly on global var

## Avoid untyped global variables

An untyped global variable might have its value, and therefore possibly its type, changed at any point. This makes
The value of an untyped global variable might change at any point, possibly leading to a change of its type. This makes
it difficult for the compiler to optimize code using global variables. This also applies to type-valued variables,
i.e. type aliases on the global level. Variables should be local, or passed as arguments to functions, whenever possible.

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