Difference between revisions of "Str.cnt"
From OpenEUO
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m (→Calling Pattern) |
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Results | Results | ||
r is a number, the count of occurrences of s2 in s1 | r is a number, the count of occurrences of s2 in s1 | ||
| − | c0...cN are numbers, the locations where | + | c0...cN are numbers, the locations where s2 was found |
== Usage Example == | == Usage Example == | ||
Latest revision as of 18:08, 24 November 2010
Calling Pattern
Call
local r[,c...] = sl.str.cnt(s1,s2[,bsimple[,bpos]])
Args
s1 is a string s2 is a string bsimple (optional) is a boolean or nil bpos (optional) is of any type
Results
r is a number, the count of occurrences of s2 in s1 c0...cN are numbers, the locations where s2 was found
Usage Example
local s = sl.str local i = 'This is a test' local j = 'is' local r,c1,c2 = s.cnt(i,j,true,true) print(r..' '..c1..' '..c2)
--> 2 3 6
Description
Counts the number of occurrences of string s2 in string s1 and optionally returns the positions as well. If argument bsimple is left unspecified, or is specified as true, then pattern matching is disabled and a plain search is undertaken. If bsimple is specified as false, then pattern matching will be performed. If bpos is specified as true, then the positions of the substring in string s1 will also be returned following the occurrence count.
Upon Error
Cnt fails silently. If s1 or s2 aren't strings, then 0 (zero) is returned.
