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17+ < table >
18+ < tr >
19+ < th > Language </ th >
20+ < th > int< br > (1..1,000,000) </ th >
21+ < th > strcat< br > (1000000 times) </ th >
22+ < th > </ th >
23+ </ tr >
24+ < tr > < td > c</ td > < td > 2</ td > < td > 10</ td > < td > strcpy</ td > </ tr >
25+ < tr > < td > cpp</ td > < td > 2</ td > < td > 22</ td > < td > std::string.append< br > string+string leads no response</ td > </ tr >
26+ < tr > < td > go</ td > < td > 0.5</ td > < td > 13</ td > < td > bytes.Buffer.WriteString< br > strings.Join cost 80ms+< br > NOTICE: in fact "go run" cost much time, it can be proved by exec "time go run test.go" on your shell </ td > </ tr >
27+
28+ < tr > < td > java 6</ td > < td > 6</ td > < td > 35</ td > < td > StringBuilder</ td > </ tr >
29+ < tr > < td > OBJC(iOS Simulator)</ td > < td > 2</ td > < td > 45</ td > < td >
30+ NSString stringByAppendingString:TIMEOUT< br >
31+ NSMutableString appendFormat:246ms < br >
32+ NSMutableArray componentsJoinedByString:129ms < br >
33+ NSMutableString appendString:63ms < br >
34+ CFMutableStringRef appendString:52ms < br >
35+ CFStringRef[]=> CFArrayRef join appendString:45ms</ td > </ tr >
36+
37+ < tr > < td > php 5.4</ td > < td > 36</ td > < td > 56</ td > < td > with APC< br > ./test.php but not php test.php</ td > </ tr >
38+ < tr > < td > scala 2.0</ td > < td > 4.5</ td > < td > 76</ td > < td > no java.lang.stringBuilder no response!!!</ td > </ tr >
39+ < tr > < td > nodejs 0.8.22</ td > < td > 2</ td > < td > 95</ td > < td > </ td > </ tr >
40+ < tr > < td > lua 5.2.1</ td > < td > 40</ td > < td > 225</ td > < td > table.insert/concat</ td > </ tr >
41+ < tr > < td > groovy 2.2.1</ td > < td > 239</ td > < td > 227</ td > < td > str< < =str2< br > older version have to use java.StringBuilder?</ td > </ tr >
42+ < tr > < td > python 2.7.2</ td > < td > 213</ td > < td > 247</ td > < td > arr.append-> join< br > pyc has a same result</ td > </ tr >
43+ < tr > < td > perl 5.12</ td > < td > 144</ td > < td > 288</ td > < td > </ td > </ tr >
44+ < tr > < td > ruby 1.8.7(REWROTE)</ td > < td > 140</ td > < td > 286</ td > < td > arr.join</ td > </ tr >
45+ < tr > < td > ruby 2.0.0</ td > < td > 141</ td > < td > 438</ td > < td > (arr.join)< br > str+str no response</ td > </ tr >
46+
47+ < tr > < td > js/ff22</ td > < td > 2</ td > < td > 34</ td > < td > (+ on ff is amazing), innerHTML is pretty fast< br > it does not mean html render is fast either.</ td > </ tr >
48+ < tr > < td > js/chrome</ td > < td > 2</ td > < td > 110</ td > < td > </ td > </ tr >
49+ < tr > < td > js/safari6</ td > < td > 62</ td > < td > 112</ td > < td > </ td > </ tr >
50+ < tr > < td > js/opera12</ td > < td > 180</ td > < td > 250</ td > < td > </ td > </ tr >
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