.net – IF / ELSE语句顺序的最佳实践

发布时间：2020-12-17 00:09:22 所属栏目：大数据来源：网络整理

导读：哪个更好的做法？ (我在.Net中编码,如果这有所作为) IF condition = true THEN ...true action--even if rare...ELSE ...actionEND IF 要么 IF condition = [most common condition] THEN ...most common action....ELSE ...least common actionEND IF 根据C

哪个更好的做法？ (我在.Net中编码,如果这有所作为)

IF condition = true THEN
   ...true action--even if rare...
ELSE
   ...action
END IF

要么

IF condition = [most common condition] THEN
   ...most common action....
ELSE
   ...least common action
END IF

根据Code Complete的作者Steve McConnell,你应该

“Put the case you normally expect to
process first. This is in line with
the general principle of putting code
that results from a decision as close
as possible to the decision…[putting
the normal case after the if] puts the
focus on reading the main flow rather
than on wading through the exceptional
cases,so the code is easier to read
overall.”

Code Complete,第2版,第356-357页.

（编辑：李大同）

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