objective c - Calling instance method from class method: Possible or no? -


in previous post explained converting old 'c' program objective-c, , learned difference between messaging (old version) static methods , class methods.

however, how can class method call instance method (assuming it's possible)? here's original (static) function:

static int newsplitb(int b, int hi, int lo, int found) {  int hlp;   if(hi - lo <= 1)    return 0;    bis(lo + (hi - lo + 1) / 2); // calls function bis();   return 1; }

and exact same code 'translated' obj-c:

+(int)newsplitb :(int)b :(int)hi :(int)lo :(int)found { int hlp;  if((hi - lo) <= 1)     return 0;  [tablesclass bis:(lo+(hi-lo+1)/2)]; // gives compile error return 1; }

the 'bis()' function -- snipped brevity -- sitting in separate source file in 'tables' class. unfortunately, attempting build program gives me 'tablesclass' undeclared (first use in function) error, though class has been alloc/inited earlier in same implementation file.

i've searched net hours solution, no avail. if i'm trying isn't possible, how can modify last method i'm after? in advance :-)

make sure importing tablesclass.h file otherwise current class won't know of existence , common issue when dealing error.


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