//將函數(shù)作為一種數(shù)據(jù)類型
func?changeScore(inout?scores:Array<Int>,operater?op:(inout?Array<Int>)->()){
????op(&scores);
}
func?allAddScore(inout?scores:Array<Int>)->(){
????for?i?in?0..<scores.count{
????????scores[i]?+=?5;
????}
}
func?allTransfer(inout?scores:Array<Int>){
????for?i?in?0..<scores.count{
????????scores[i]=Int(Double(scores[i])/150.0*100.0);
????}
}
func?allSqrt(inout?scores:Array<Int>){
????for?i?in?0..<scores.count{
????????scores[i]=Int(sqrt(Double(scores[i]))*10.0);
????}
}
var?scores:[Int]=[60,30,55,90,100,78,94];
allAddScore(&scores);
scores;
scores=[150,120,100,90,72];
allTransfer(&scores);
scores;
scores=[100,60,50,36,80,75,65];
allSqrt(&scores);
scores;

目前代碼運(yùn)行到這里，單獨(dú)調(diào)用每個(gè)函數(shù)都沒問題。結(jié)果都是對(duì)的。

scores=[1,2,3,4,5,6];
//var?myDelegate?=?allAddScore;
//changeScore(&scores,?operater:?myDelegate);
changeScore(&scores,?operater:?allAddScore);
scores;

代碼運(yùn)行到這里，如果我在調(diào)用changeScore這個(gè)函數(shù)時(shí)直接傳入的是allAddScore這個(gè)函數(shù)名，那么運(yùn)行結(jié)果也沒有問題。

但是，如果我單獨(dú)定義一個(gè)變量myDelegate將其賦值為函數(shù)名allAddScore，這時(shí)候編譯器不會(huì)出現(xiàn)紅色感嘆號(hào)，表示代碼是沒有問題的。但是XCode就報(bào)錯(cuò)了。錯(cuò)誤說明是com.apple.dt.xcode.Playground這個(gè)service create a crash log.然后編輯區(qū)的右邊就沒有任何結(jié)果了。

各位大神，幫忙看看這個(gè)是什么原因？！