使用 nil coalescing 减少行数

WenchaoD · WenchaoD · commit d9461a9311b0 · 2015-10-12T23:03:23.000+08:00
如题
diff --git a/MJRefresh/Custom/Header/MJRefreshNormalHeader.m b/MJRefresh/Custom/Header/MJRefreshNormalHeader.m
@@ -20,10 +20,7 @@ @implementation MJRefreshNormalHeader
 - (UIImageView *)arrowView
 {
     if (!_arrowView) {
-        UIImage *image = [UIImage imageNamed:MJRefreshSrcName(@"arrow.png")];
-        if (!image) {
-            image = [UIImage imageNamed:MJRefreshFrameworkSrcName(@"arrow.png")];
-        }
+        UIImage *image = [UIImage imageNamed:MJRefreshSrcName(@"arrow.png")] ?: [UIImage imageNamed:MJRefreshFrameworkSrcName(@"arrow.png")];
         UIImageView *arrowView = [[UIImageView alloc] initWithImage:image];
         [self addSubview:_arrowView = arrowView];
     }

Original file line number	Diff line number	Diff line change
`@@ -20,10 +20,7 @@ @implementation MJRefreshNormalHeader`
`20`	`20`	`- (UIImageView *)arrowView`
`21`	`21`	`{`
`22`	`22`	`if (!_arrowView) {`
`23`		`- UIImage *image = [UIImage imageNamed:MJRefreshSrcName(@"arrow.png")];`
`24`		`- if (!image) {`
`25`		`- image = [UIImage imageNamed:MJRefreshFrameworkSrcName(@"arrow.png")];`
`26`		`- }`
	`23`	`+ UIImage *image = [UIImage imageNamed:MJRefreshSrcName(@"arrow.png")] ?: [UIImage imageNamed:MJRefreshFrameworkSrcName(@"arrow.png")];`
`27`	`24`	`UIImageView *arrowView = [[UIImageView alloc] initWithImage:image];`
`28`	`25`	`[self addSubview:_arrowView = arrowView];`
`29`	`26`	`}`