Created
April 10, 2012 10:04
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------------------------------------------------------- | |
C++: | |
#include <iostream> | |
#include <string> | |
#include <fstream> | |
#include <boost/tokenizer.hpp> | |
#include <vector> | |
#include <iterator> | |
#include <sys/time.h> | |
using namespace std; | |
using namespace boost; | |
int main() | |
{ | |
string data = ("test.csv"); | |
struct timeval begin, end; | |
gettimeofday(&begin, NULL); | |
ifstream in(data.c_str()); | |
typedef tokenizer< escaped_list_separator<char> > Tokenizer; | |
string line; | |
while(getline(in, line)) | |
{ | |
Tokenizer tok(line); | |
} | |
gettimeofday(&end, NULL); | |
cout << "Time elapsed: " << (begin.tv_usec - end.tv_usec)/1000 <<endl; | |
} | |
------------------------------------------------------- | |
D: | |
import std.file; | |
import std.string; | |
void main(string args[]) { | |
char[][][] f = split(split(cast(char[])read("test.csv"), "\n"), "\t"); | |
} | |
------------------------------------------------------- | |
Julia: | |
macro timeit(ex,name) | |
quote | |
t = Inf | |
for i=1:5 | |
t = min(t, @elapsed $ex) | |
end | |
println(t*1000) | |
end | |
end | |
function parse() | |
file = LineIterator(open("./test.csv")) | |
for line in file | |
split(line, '\t') | |
end | |
end | |
@timeit parse() "parse" | |
------------------------------------------------------- | |
Perl: | |
use Time::HiRes qw(gettimeofday); | |
my $t = gettimeofday(); | |
open(FILE, './2.txt'); | |
while( <FILE> ) { | |
split('\t'); | |
} | |
close (FILE); | |
print(gettimeofday()-$t . "\n"); | |
exit; | |
--------------------------------------------------------- | |
Python: | |
#!/usr/bin/python | |
import time | |
def parse(): | |
file_handle = open("./test.csv") | |
for line in file_handle: | |
line.split("\t") | |
tmin = float("inf") | |
for i in range(5): | |
t = time.time() | |
parse() | |
t = time.time()-t | |
if t < tmin: | |
tmin = t | |
print(str(tmin)) | |
--------------------------------------------------------- | |
Ruby: | |
min = 1000000000 | |
5.times do | |
t = Time.now | |
File.open("./test.csv").each do |r| | |
r.split("\t") | |
end | |
finish = (Time.now - t) | |
if finish < min | |
min = finish | |
end | |
end | |
puts min |
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