Search conducted from right to left? Topic is solved

[FredOoo]

Code: Select all

	Haystack := "The Quick Brown Fox Jumps Over the Lazy Dog"
	Needle   := "Fox"
	p1  := inStr(Haystack, Needle, false, +1) ; 17
	p2  := inStr(Haystack, Needle, false, -1) ; 27 ★ ???
	; If Occurrence is omitted, a negative StartingPos causes the search to be conducted from right to left.
	msgBox p1 "`n" p2

I get p1 and p2 = 17
Maybe something I misunderstood?

[boiler]

The position where "Fox" is found is supposed to be 17 in that string no matter which direction the search starts from because there is only one instance of that word. Starting the search from the end doesn’t mean it will count how many characters it is from the end. It means it will find the first match when starting from that end. You’ll see the difference if you change the needle to "the" because it will find the first instance at position 1 when starting from the beginning of the string and the last instance at position 32 when starting from the end.

[FredOoo]

hum… ok, I see.
Thanks

[Helgef]

Regardless of the values of StartingPos or Occurrence, the return value is always relative to the first character of Haystack. For example, the position of "abc" in "123abc789" is always 4.