iOS開發 NSPredicate 謂詞過濾

一、根據模型條件過濾陣列

nsmutablearray *marr = [[nsmutablearray alloc] init];

testmodel *t1 = [[testmodel alloc] init];
t1.age = @"1";
testmodel *t2 = [[testmodel alloc] init];
t2.age = @"3";
testmodel *t3 = [[testmodel alloc] init];
t3.age = @"
19";
[marr addobject:t1];
[marr addobject:t2];
[marr addobject:t3];
// nspredicate *predicate = [nspredicate predicatewithformat:@"age = '19' || age = '3'"]; 
nspredicate *predicate = [nspredicate predicatewithformat:@"age like '19' || age like '3'
"]; nsarray *receivearr = [marr filteredarrayusingpredicate:predicate];
nslog(@"
%@",receivearr);

nsmutablearray *marr = [[nsmutablearray alloc] init];

person *p = [[person alloc] init];
p.age = @5;
p.isfemail = yes;
person *p2 = [[person alloc] init];
p2.age = @16;
p2.isfemail = no;
person *p3 = [[person alloc] init];
p3.isfemail = yes;
p3.age = @5;
[marr addobject:p];
[marr addobject:p2];
[marr addobject:p3];
nspredicate *predicate = [nspredicate predicatewithformat:@"age = 5
"]; //崩潰
nspredicate *predicate = [nspredicate predicatewithformat:@"age like 5"];
nspredicate *predicate = [nspredicate predicatewithformat:@"isfemail = yes"];
//崩潰
nspredicate *predicate = [nspredicate predicatewithformat:@"isfemail like yes"];
nsarray *array = [marr filteredarrayusingpredicate:predicate];
nslog(@"
%@",array);

nsarray *array1 = [nsarray

arraywithobjects:
@1,@2,@3,@4,@5,@6,nil];
nsarray *array2 = [nsarray
arraywithobjects:
@4,@5,nil];
//self 指下面的array2
nspredicate *predicate = [nspredicate
predicatewithformat:@"self in %@",array1];
nsarray *resultarr = [array2 filteredarrayusingpredicate:predicate];
nslog(@"%@",resultarr);

//過濾數值

nsarray *array = @[@1,@2,@3,@4];
nspredicate *predicate = [nspredicate predicatewithformat:@"self >= 2"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

//過濾字串

nsarray *array = @[@"1",@"2",@"3",@"4"];
nspredicate *predicate = [nspredicate predicatewithformat:@"self >= '2'"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[

@1,@2,@3,@4];
nspredicate *predicate = [nspredicate predicatewithformat:@"self between "];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"
%@",array);

nsarray *array = @[@"1",@"2",@"3",@"4"];

nspredicate *predicate = [nspredicate predicatewithformat:@"self between "];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[@"1",@"2",@"3",@"4"];

nspredicate *predicate = [nspredicate predicatewithformat:@"self in "];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[@"1",@"21",@"31",@"4"];

//包含即可
nspredicate *predicate = [nspredicate predicatewithformat:@"self contains '1'"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[@"1",@"21",@"31",@"4"];

//以1開頭
nspredicate *predicate = [nspredicate predicatewithformat:@"self beginswith '1'"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[@"1",@"21",@"31",@"4"];

//以1結尾
nspredicate *predicate = [nspredicate predicatewithformat:@"self endswith '1'"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[@"1",@"21",@"31",@"4"];

nspredicate *predicate = [nspredicate predicatewithformat:@"self like '??1'"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

nsarray *array = @[@"1",@"21",@"31",@"4"];

nspredicate *predicate = [nspredicate predicatewithformat:@"self like '1*'"];
array = [array filteredarrayusingpredicate:predicate];
nslog(@"%@",array);

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