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Added note about CoreText loading performance workaround to Readme

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1 parent 170bbfb commit f6daeef7dd4c06d845105fb9c537b6fa1d7b2940 @odrobnik odrobnik committed Aug 10, 2011
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@@ -9,3 +9,11 @@ Your help is much appreciated. Please send pull requests for useful additions yo
If you find brief test cases where the created `NSAttributedString` differs from the version on OSX please send them to us!
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+CoreText has a problem prior to iOS 5 where it takes around a second on device to initialize its internal font lookup table. You have two workarounds available:
+- trigger the loading on a background thread like shown in
+- if you only use certain fonts then add the variants to the DTCoreTextFontOverrides.plist, this speeds up the finding of a specific font face from the font family

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