objective c - how to put characters combination as constant command into iOS framework -

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i new ios programming. developing sdk framework right now. have command 3 characters: 'esc' 'e' '1', wanna combine 3 characters generate nsstring , put nsstring framework. therefore others can directly use constant in framework.

any 1 knows how this? because in constant.h file, cannot use run-time functions such stringwithformat.

i think using \u combine 3 characters. doing way: nsstring *message2 = @"\\u001b\\u002d\\u0031"; failed. considered long string: \\u001b\\u002d\\u0031 rather esc+e+1

thanks lot.

\u universal characters restricted iso 10646 exclude characters. of particular interest esc. can encode in octal:

nsstring *message2 = @"\033e1";

note typically not put these in header file. typically implement this way:

mymessages.h

// declare here extern nsstring * const mymessage2;

mymessages.m

// define here nsstring * const mymessage2 = @"...";

as possible, avoid generic files constant.h. place constants in header closely matches. example, nsglobaldomain string constant defined in nsuserdefaults.h because it's used user defaults. there's no global "cocoastringconstants.h" file.


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