[Tips] Nsarray Use Tips

Nsarray believe that the development of iOS almost every day to use, in some cases, we need to go to the array of weight and sequencing, the general wording is nothing but the first traversal, and then processing the results, in fact, we have a more convenient way to fix.

Fast array de-weight

Nsarray *[email protected][@ "One", @ "one", @ "one"];

Tmparray = [Tmparray valueforkeypath:@ "@distinctUnionOfObjects. Self"];

In this way, we have already completed the Tmparray of the array, and we have removed the duplicate @ "one" inside the resulting.

Array Fast Reverse

Nsarray *tmparray = @[@ "One", @ "one", @ "three"];

Tmparray = Tmparray. Reverseobjectenumerator. AllObjects;

Very simple, only with one line of code, completed the reverse operation, the resulting tmparray is @[@ "three", @ "Two", @ "one"].

[Tips] Nsarray Use Tips