Re^2: using split

[imp]

in reply to Re: using split
in thread using split

There is no difference in the two lines you listed.

perl -MO=Deparse -e "split('|', 'ab|c');"                   
split(/|/, 'ab|c', 0);
-e syntax OK

[girarde]

I think the difference is that when | is quoted it gets treated as a literal instead of a regex 'or', i.e., it will split the string on the pipe characters.

[FunkyMonk]

I think you missed the point entirely:(

[imp]

One of the most valuable things I learned from perlmonks is to always test my assumptions. Before posting a response to a question I always run the example code that I am providing and verify that it works the way I anticipate.

The reply I provided above demonstrates that the perl parser sees the two statements as equivalent. Here is an example that proves the behaviour:

> perl -le "print for @cols = split('|', 'ab|c');"            
a
b
|
c

[naikonta]

What would you have in mind if you knew from split that the first argument is /PATTERN/? :-)

[BrowserUk]

There is one subtle difference between using '...' and /.../ as regex delimiters. The latter interpolates where the former does not. That does not affect the examples in this thread though.

[ikegami]

And the difference between "..." and /.../ is that "..." unescapes too much.

For example,
"\d" is the same as /d/.
If you want /\d/, the equivalent would be "\\d".

I always use /.../ or qr/.../ to avoid confusion.

[BrowserUk]

Yes. I never use "...", preferring m[...] instead. Using '...' for a regex is simply shorthand for m'...' which gives the same, non-interpolating behaviour.

A bad habit? Maybe...