r - 注释会减慢R吗？-6ren

r - 注释会减慢R吗？

转载作者：行者123 更新时间：2023-12-04 08:35:00

注释会减慢R吗？

关于Python，在StackOverflow上已经问过两次这个问题:

Do comments slow down an interpreted language?
Will excessive commenting of code slow execution?

对于python，答案似乎为“否”。我对这两种语言之间的差异了解不足，无法知道这些答案与R的相关性。

这是关于R中的空白的类似问题。同样，答案似乎是“否”。

does white space slow down processing

最佳答案

对于R，除非我在下面的某个地方犯了错误，否则答案似乎是"is"。

# Time difference of 21.84725 secs
# Time difference of 24.05738 secs

# total.time.2 - total.time.1
#
# Time difference of 2.210126 secs

n <- 280

start.time.1 <- Sys.time()

b <- 2

for(i in 1:n) {
     for(j in 1:n) {
          for(k in 1:n) {

               b <- b + 2 - 1 - 0.75

          }
     }
}

b

end.time.1 <- Sys.time()

total.time.1 <- end.time.1 - start.time.1
total.time.1


start.time.2 <- Sys.time()

b <- 2

# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.


for(i in 1:n) {

# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.

     for(j in 1:n) {

# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.

          for(k in 1:n) {

# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.

               b <- b + 2 - 1 - 0.75

# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.
# I wonder whether comments slow down R.  Here are some comments.  Let's see.

          }
     }
}

b

end.time.2 <- Sys.time()

total.time.2 <- end.time.2 - start.time.2

total.time.1
total.time.2

total.time.2 - total.time.1

关于r - 注释会减慢R吗？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22971888/

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r - 注释会减慢R吗？