Add string util.
Add string util.

zjh171/Typhoon,nickynick/Typhoon,manicakes/Typhoon,manicakes/Typhoon,r2B3Challenge/Typhoon,mbaltaks/Typhoon,1yvT0s/Typhoon,literator/Typhoon,gaurav1981/Typhoon,1yvT0s/Typhoon,eyeem/Typhoon,zjh171/Typhoon,mbaltaks/Typhoon,pomozoff/Typhoon,zjh171/Typhoon,pomozoff/Typhoon,1yvT0s/Typhoon,dmueller39/Typhoon,zjh171/Typhoon,r2B3Challenge/Typhoon,gaurav1981/Typhoon,1yvT0s/Typhoon,literator/Typhoon,pomozoff/Typhoon,dmueller39/Typhoon,eyeem/Typhoon,dmueller39/Typhoon,eyeem/Typhoon,pomozoff/Typhoon,r2B3Challenge/Typhoon,eyeem/Typhoon,gaurav1981/Typhoon,mbaltaks/Typhoon,literator/Typhoon,literator/Typhoon,literator/Typhoon,zjh171/Typhoon,manicakes/Typhoon,eyeem/Typhoon,nickynick/Typhoon,nickynick/Typhoon,gaurav1981/Typhoon,r2B3Challenge/Typhoon,manicakes/Typhoon,dmueller39/Typhoon,eyeem/Typhoon,zjh171/Typhoon,mbaltaks/Typhoon,1yvT0s/Typhoon,manicakes/Typhoon,nickynick/Typhoon,r2B3Challenge/Typhoon,mbaltaks/Typhoon,1yvT0s/Typhoon,gaurav1981/Typhoon,manicakes/Typhoon,literator/Typhoon,gaurav1981/Typhoon,r2B3Challenge/Typhoon,pomozoff/Typhoon,nickynick/Typhoon,mbaltaks/Typhoon,dmueller39/Typhoon