Nsstring in obj-C

1. Compare

1. isequaltostring should be used

2 Compare

This can provide an arrangement. It can also be sorted by the character length of the string.

Nsstring * STR = [nsstring stringwithformat: @ "100"];
Nsstring * str2 = [nsstring stringwithformat: @ "100"];
Nscomparisonresult resul = [STR compare: str2 options: nscaseinsensitivesearch | nsnumericsearch];
If (resul = nsorderedsame ){
Nslog (@ "they are same! ");
}

 

 

Contain

Hasprefix

Hassuffix

Rangeofstring

Eg:

Nsange range = [STR rangeofstring: @ "2"];
Nslog (@ "Location: % I length: % I", range. Location, range. Length );

 

Third: nsmutablestring

 

Nsmutablestring * multabstr = [nsmutablestring stringwithcapacity: [STR length];
[Multabstr appendstring: Str];
Nslog (@ "% @", multabstr );