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Simple way to repeat a string

Im wanting for a elemental commons technique oregon function that permits maine to repetition any drawstring n occasions I cognize I may compose this utilizing

Identify if a string is a number

If I person these strings abc mendacious 123 actual ab2 mendacious Is location a bid similar IsNumeric oregon thing other that tin place if a drawstring is a

Convert Int to String in Swift

Im attempting to activity retired however to formed an Int into a Drawstring successful Swift I fig retired a workaround utilizing NSNumber however Id emotion