PERF: Ensure PythonQt python module only have their init function visible. #787
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…ible. Ensuring only the required symbols are visible will help speed up the dynamic loader symbol lookup. Indeed, here is a quote from [1]: "When the dynamic loader searches for symbols, it performs string comparisons with every symbol in the search scope. Reducing the number of symbols the dynamic loader has to go through to find the desired symbol improves your app’s performance" [1] https://developer.apple.com/library/content/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryUsageGuidelines.html#//apple_ref/doc/uid/TP40001928-SW22
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Ensuring only the required symbols are visible will help speed up the
dynamic loader symbol lookup.
Indeed, here is a quote from [1]:
"When the dynamic loader searches for symbols, it performs string
comparisons with every symbol in the search scope. Reducing the number
of symbols the dynamic loader has to go through to find the desired
symbol improves your app’s performance"
[1] https://developer.apple.com/library/content/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryUsageGuidelines.html#//apple_ref/doc/uid/TP40001928-SW22