CODEWITHSUNDEEP
listtcl
Sjs
Sjs

Reputation: 213

TCL: searching a list for elements containing a particular character using lsearch

In the following list:

{12 34 23 54 67 75 46}

Using lsearch, what is the search pattern to be used for finding all the elements from this list which has the number '4' in it?

(i.e the output should return {34 54 46})

Upvotes: 0

Views: 1051

Answers (2)

Schelte Bron
Schelte Bron

Reputation: 4813

The answer given by Brad Lanam will work if you know what you are matching will not contain any characters with a special meaning to glob. If that is not guaranteed, you can use:

set newlist [lsearch -all -inline -regexp $mylist (?q)4]

The (?q) makes anything following it a literal string. So no special interpretation of any characters will happen. But a regular expression is not anchored by default, so the string can appear anywhere in the list elements to match.

Upvotes: 0

Brad Lanam
Brad Lanam

Reputation: 5723

Reference: lsearch

You can use:

 set newlist [lsearch -all -inline -glob $mylist *4*]

-glob is the default, I put it in for documentation purposes.

-all indicates to return all results, not just the first match.

-inline indicates to return the list as the result.

Upvotes: 2

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