// exchange instance method

BOOL ty_swizzleInstanceMethod(Class aClass, SEL originalSel, SEL replacementSel);



// exchange class method

BOOL ty_swizzleClassMethod(Class aClass, SEL originalSel, SEL replacementSel);



// exchange method with IMP, and store orignal IMP

BOOL ty_swizzleMethodAndStoreIMP(Class aClass, SEL originalSel, IMP replacementIMP,IMP *orignalStoreIMP);



IMP  ty_swizzleMethodIMP(Class aClass, SEL originalSel, IMP replacementIMP);

// exchange instance method

+ (BOOL)ty_swizzleMethodWithOrignalSel:(SEL)orignalSel replacementSel:(SEL)replacementSel;



// exchange class method

+ (BOOL)ty_swizzleClassMethodWithOrignalSel:(SEL)orignalSel replacementSel:(SEL)replacementSel;



// exchange method with IMP, and store orignal IMP

+ (BOOL)ty_swizzleMethodWithOrignalSel:(SEL)orignalSel replacementIMP:(IMP)replacementIMP orignalStoreIMP:(IMP *)orignalStoreIMP;



+ (IMP) ty_swizzleMethodWithOrignalSel:(SEL)orignalSel replacementIMP:(IMP)replacementIMP;