equalTo(...)不能传数值参数，因为参数是 id 类型的。mas_equalTo(...) 可以传数值参数，因为mas_equalTo(...) 宏定义替换为一个equalTo(...)装箱操作。如下：
#define mas_equalTo(...) equalTo(MASBoxValue((__VA_ARGS__)))
其中MASBoxValue((__VA_ARGS__))定义如下：
#define MASBoxValue(value) _MASBoxValue(@encode(__typeof__((value))), (value))
staticinlineid_MASBoxValue(constchar*type, ...) {
va_list v;
va_start(v, type);
idobj =nil;
if(strcmp(type,@encode(id)) ==0) {
idactual =va_arg(v,id);
obj = actual;
}elseif(strcmp(type,@encode(CGPoint)) ==0) {
CGPointactual = (CGPoint)va_arg(v,CGPoint);
obj = [NSValuevalue:&actualwithObjCType:type];
}elseif(strcmp(type,@encode(CGSize)) ==0) {
CGSizeactual = (CGSize)va_arg(v,CGSize);
obj = [NSValuevalue:&actualwithObjCType:type];
}elseif(strcmp(type,@encode(MASEdgeInsets)) ==0) {
MASEdgeInsets actual = (MASEdgeInsets)va_arg(v, MASEdgeInsets);
obj = [NSValuevalue:&actualwithObjCType:type];
}elseif(strcmp(type,@encode(double)) ==0) {
doubleactual = (double)va_arg(v,double);
obj = [NSNumbernumberWithDouble:actual];
}elseif(strcmp(type,@encode(float)) ==0) {
floatactual = (float)va_arg(v,double);
obj = [NSNumbernumberWithFloat:actual];
}elseif(strcmp(type,@encode(int)) ==0) {
intactual = (int)va_arg(v,int);
obj = [NSNumbernumberWithInt:actual];
}elseif(strcmp(type,@encode(long)) ==0) {
longactual = (long)va_arg(v,long);
obj = [NSNumbernumberWithLong:actual];
}elseif(strcmp(type,@encode(longlong)) ==0) {
longlongactual = (longlong)va_arg(v,longlong);
obj = [NSNumbernumberWithLongLong:actual];
}elseif(strcmp(type,@encode(short)) ==0) {
shortactual = (short)va_arg(v,int);
obj = [NSNumbernumberWithShort:actual];
}elseif(strcmp(type,@encode(char)) ==0) {
charactual = (char)va_arg(v,int);
obj = [NSNumbernumberWithChar:actual];
}elseif(strcmp(type,@encode(bool)) ==0) {
boolactual = (bool)va_arg(v,int);
obj = [NSNumbernumberWithBool:actual];
}elseif(strcmp(type,@encode(unsignedchar)) ==0) {
unsigned char actual = (unsigned char)va_arg(v, unsigned int);
obj = [NSNumbernumberWithUnsignedChar:actual];
}elseif(strcmp(type,@encode(unsignedint)) ==0) {
unsigned int actual = (unsigned int)va_arg(v, unsigned int);
obj = [NSNumbernumberWithUnsignedInt:actual];
}elseif(strcmp(type,@encode(unsignedlong)) ==0) {
unsigned long actual = (unsigned long)va_arg(v, unsigned long);
obj = [NSNumbernumberWithUnsignedLong:actual];
}else if (strcmp(type, @encode(unsigned long long)) == 0) {
unsigned long long actual = (unsigned long long)va_arg(v, unsigned long long);
obj = [NSNumber numberWithUnsignedLongLong:actual];
}elseif(strcmp(type,@encode(unsignedshort)) ==0) {
unsigned short actual = (unsigned short)va_arg(v, unsigned int);
obj = [NSNumbernumberWithUnsignedShort:actual];
}
va_end(v);
returnobj;
}