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Which is faster?

Name: Anonymous 2011-10-10 23:42

++x or x+1?

Name: Anonymous 2011-10-10 23:47

they aren't equivalent. did you mean x = x+1 ?

Name: Anonymous 2011-10-10 23:54

hare>tortoise

Name: Anonymous 2011-10-11 1:13

x = x + 1
or
x += 1

Name: Anonymous 2011-10-11 1:15

If you use a crappy scripting language like Python or Ruby, ++x would be faster than x = x+1.

Name: Anonymous 2011-10-11 1:16

>>5
Also, in early days of C/C++, ++x was faster, that is why they invented a special operator.

Name: Anonymous 2011-10-11 1:34

>>6 1
Also, >>1 , don't you have anything better to do than increment a variable by one and then ask us how you can do it quicker?

Name: Anonymous 2011-10-11 3:43

It depends on the context; sometimes, a local variable can be optimized into a register. In that case, x+1 or x+=1 would result in an inc instruction, resulting in equivalent speed.

Name: Anonymous 2011-10-11 8:16

>>5
Ruby can't into ++ --

Name: Anonymous 2011-10-11 8:26

Obviously ++x because the addition is performed before

Name: Anonymous 2011-10-14 19:02

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Which is faster?

1 Name: Anonymous 2011-10-10 23:42

2 Name: Anonymous 2011-10-10 23:47

3 Name: Anonymous 2011-10-10 23:54

4 Name: Anonymous 2011-10-11 1:13

5 Name: Anonymous 2011-10-11 1:15

6 Name: Anonymous 2011-10-11 1:16

7 Name: Anonymous 2011-10-11 1:34

8 Name: Anonymous 2011-10-11 3:43

9 Name: Anonymous 2011-10-11 8:16

10 Name: Anonymous 2011-10-11 8:26

11 Name: Anonymous 2011-10-14 19:02