Hi!
If I want to get the first element of a delimited string, which of this two
methods would be the best performancevise?
Dim s0 as String = "abc;def;ggg"
Dim s1 as String
Dim s2 as String
Method 1:
s1 = s0.Split(";")(0)
Method 2:
s2 = s0.Substring(0, s0.IndexOf(";"))
Brgds
Jonas 9 9763
"Jonas" <jo***@nospam.pl> schrieb If I want to get the first element of a delimited string, which of this two methods would be the best performancevise?
Why not test it?
Dim s0 as String = "abc;def;ggg" Dim s1 as String Dim s2 as String
Method 1: s1 = s0.Split(";")(0)
Method 2: s2 = s0.Substring(0, s0.IndexOf(";"))
I guess Method2 is faster because only the first part is extracted from the
string. You can also try to pass a char instead of a string to IndexOf:
s2 = s0.Substring(0, s0.IndexOf(";"c)) ' ";"c for char literals
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
With this short string? Dim s0 as String = "abc;def;ggg"
Do you want to know it in 1/10000000000000000000000000 second?
Cor
Hi Armin,
I had the same answer but changed it (even with the character).
See my answer.
Cor
Hi Armin,
Last week I did a test about this again with the Regex in it, I don't know
if you have seen it.
The processing of the loop did take the most time.
So I think that this kind of things are only a question when it is a long
string, and then it could not be another answer than "just take the 4
characters with the substring" of course.
Cor
"Cor" <no*@non.com> schrieb Last week I did a test about this again with the Regex in it, I don't know if you have seen it.
No, I haven't followed the Regex threads.
The processing of the loop did take the most time.
So I think that this kind of things are only a question when it is a long string, and then it could not be another answer than "just take the 4 characters with the substring" of course.
You are right, but whenever I have the choice, I choose the faster version.
:-)
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
in addition
are you going to use the other parts of the string?
if so use the split and send it to a string array
eric
"Jonas" <jo***@nospam.pl> wrote in message
news:uh**************@TK2MSFTNGP12.phx.gbl... Hi!
If I want to get the first element of a delimited string, which of this
two methods would be the best performancevise?
Dim s0 as String = "abc;def;ggg" Dim s1 as String Dim s2 as String
Method 1: s1 = s0.Split(";")(0)
Method 2: s2 = s0.Substring(0, s0.IndexOf(";"))
Brgds
Jonas
:-)
It was just an example, the actual string is longer, up to 256 characters.
/Jonas
"Cor" <no*@non.com> wrote in message
news:eV**************@TK2MSFTNGP10.phx.gbl... With this short string?
Dim s0 as String = "abc;def;ggg"
Do you want to know it in 1/10000000000000000000000000 second?
Cor
Hi Jonas,
I think you saw my answer with Armin, it is the same as he, but actualy with
strings of 256characters the difference is also almost nothing (on a modern
computer).
But I would choose for your option without the split (when it is not
something Eric said) and then with the small c from character in it as Armin
made in his example.
Cor This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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