Simple knowledge about NSNumber & Nsvalue's methodology

Simple sharing under, hope that Daniel more guidance maze, gradually revise, perfect insufficient support. For reference, please also understand

#import <Foundation/Foundation.h>

typedef struct{//c-Structural Body

int year;

int month;

int day;

}date;

void text () {

Date mydate; To define a struct-body variable

Date date={2016,8,20};

Char *[email protected] (Date); Generate a corresponding type description string based on struct type

void* represents any pointer. This is going to be the address of the struct &date

Nsvalue *val=[nsvalue value:&date Withobjctype:type];

[Val Objctype]; Remove type description string

[Val getvalue:&mydate]; Remove the packaged structure

NSLog (@ "%i-%i-%i", mydate.year,mydate.month,mydate.day); . Represents an Access member

}

int main (int argc, const char * argv[]) {

@autoreleasepool {

#pragma mark NSNumber common methods

Can only be packed with numbers, cannot package structures, and does not support automatic unpacking of packages

NSNumber *num=[nsnumber Numberwithint:10];

wrapping int Type 10 to a NSNumber object

Nsmutablearray *array=[nsmutablearray Array];

[Array addobject:num]; Adding values to the array

NSNumber *num1=[array Lastobject];

Removed is still a NSNumber object, does not support automatic unpacking

int NUMBER=[NUM1 Intvalue]; Convert NSNumber to int type

[Email protected]; quickly wrap digital objects

#pragma mark Nsvalue Common methods

Wrapper class, Nsvalue is the parent class of nsnumber, can wrap any value

Cgpoint Point=cgpointmake (10, 10);

Nsvalue *value=[nsvalue Valuewithpoint:point];

Wrapping a struct as an object

[Array Addobject:value]; Add Value

Nsvalue *v1=[array Lastobject];

Cgpoint P1=[v1 Pointvalue]; Remove the value put in

BOOL Re=cgpointequaltopoint (Point, p1); Comparison of Judgments

Nsvalue *[email protected] ' a '; Fast wrapper character, print out ANSCII code: 97

Text ();

}

return 0;

}

Simple knowledge about NSNumber & Nsvalue's methodology