blocks|key|1263448|text|在不旋转的情况下确定firstSize是否适合secondSize：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1263449|if(firstSize.width+<=+secondSize.width+&&+firstSize.height+<=+secondSize.height)|code-block|syntax|javascript|1263450|entityMap^0|A|9|N|A|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Determine whether <code>firstSize</code> fits into <code>secondSize</code> without rotating:

<pre><code>if(firstSize.width &lt;= secondSize.width &amp;&amp; firstSize.height &lt;= secondSize.height)
</code></pre>

blocks|key|1684568|text|要检查等价性，可以使用Apple的CGSizeEqualToSize函数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1684569|CGSize+firstSize+=+CGSizeMake(1.0,1.0);
CGSize+secondSize+=+CGSizeMake(5.0,3.0);

if(CGSizeEqualToSize(firstSize,+secondSize))+{
++++//they+are+equal
}else{
++++//they+aren't+equal
}|code-block|syntax|javascript|1684570|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/mac/#documentation/graphicsimaging/reference/CGGeometry/Reference/reference.html^0|H|H|B|5|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

To check for equality you can use, CGSizeEqualToSize function by <a href="https://developer.apple.com/library/mac/#documentation/graphicsimaging/reference/CGGeometry/Reference/reference.html">Apple</a>.

<pre><code>CGSize firstSize = CGSizeMake(1.0,1.0);
CGSize secondSize = CGSizeMake(5.0,3.0);

if(CGSizeEqualToSize(firstSize, secondSize)) {
 //they are equal
}else{
 //they aren't equal
}
</code></pre>

blocks|key|2987584|text|以下函数确定第一个参数中的CGSize的矩形是否完全适合第二个参数中的CGSize的矩形范围。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2987585|-+(BOOL)size:(CGSize)smallerSize+isSmallerThanOrEqualToSize:(CGSize)largerSize+{

++++return+CGRectContainsRect(
++++++++CGRectMake(0.0f,+0.0f,+largerSize.width,+largerSize.height),
++++++++CGRectMake(0.0f,+0.0f,+smallerSize.width,+smallerSize.height)
++++);
}|code-block|syntax|javascript|2987586|您可以使用内置的内联助手函数，其名称是描述性的，而不是自己编写难以阅读的条件语句的完整逻辑。|2987587|虽然我还没有做过研究，但这个方法的执行速度可能比公认的答案慢，因为它涉及到将两个CGSizes转换为两个CGRects+C结构。尽管它确实有更快被读者理解的优点。|2987588|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The following function determines if the rectangle of the CGSize in the first parameter fits wholly within or at the extent of the rectangle of the CGSize in the second parameter.

<pre><code>- (BOOL)size:(CGSize)smallerSize isSmallerThanOrEqualToSize:(CGSize)largerSize {

 return CGRectContainsRect(
 CGRectMake(0.0f, 0.0f, largerSize.width, largerSize.height),
 CGRectMake(0.0f, 0.0f, smallerSize.width, smallerSize.height)
 );
}
</code></pre>

Instead of writing the full logic yourself with difficult to read conditional statements, you can use the built-in, inline helper functions whose names are descriptive.

While I haven't done the research, this method is probably slower in execution than the accepted answer since it involves converting the two CGSizes to two CGRects C structs. Though it does have the advantage of being quicker to comprehend by the reader.

blocks|key|2987664|text|这是使用运算符重载的一个很好的例子。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2987665|按区域比较(即一个CGSize的大小比另一个大)：|offset|length|style|CODE|2987666|func+<=(left:+CGSize,+right:+CGSize)+->+Bool+{
++++return+(left.width+*+left.height)+<=+(right.width+*+right.height)
}|code-block|syntax|javascript|2987667|或者，按维度进行比较(即一个CGSize是否适合另一个)：|2987668|func+<=(left:+CGSize,+right:+CGSize)+->+Bool+{
++++return+(left.width+<=+right.width)+&&+(left.height+<=+right.height)
}|2987669|显然，您不能在项目中全局地包含这两个版本，所以为了安全起见，您可能需要考虑将函数设置为当前文件的private。|2987670|entityMap^0|0|9|6|0|0|E|6|0|0|1C|7|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|Y|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|Z|8|@$D|10|E|11|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|T|$]]

This is a great case to use operator overloading.

Compare by area (i.e. is one <code>CGSize</code> larger in size than the other):

<pre><code>func &lt;=(left: CGSize, right: CGSize) -&gt; Bool {
 return (left.width * left.height) &lt;= (right.width * right.height)
}
</code></pre>

Or, compare by dimensions (i.e. would one <code>CGSize</code> fit into another):

<pre><code>func &lt;=(left: CGSize, right: CGSize) -&gt; Bool {
 return (left.width &lt;= right.width) &amp;&amp; (left.height &lt;= right.height)
}
</code></pre>

Obviously you can't include both versions globally in your project, so to be on the safe side you might want to consider making the function <code>private</code> to the current file.

blocks|key|1263452|text|if(firstSize.width+<=+secondSize.width+&&+firstSize.height+<=+secondSize.height+&&
++++firstSize.width*firstSize.height+<+secondSize.width*secondSize.height)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1263453|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>if(firstSize.width &lt;= secondSize.width &amp;&amp; firstSize.height &lt;= secondSize.height &amp;&amp;
 firstSize.width*firstSize.height &lt; secondSize.width*secondSize.height)
</code></pre>

blocks|key|2987627|text|这是CGSize上Swift+4.0的一个非常简单的扩展。正如OP所述，这假设您关注的是尺寸而不是面积。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|BOLD|entityRanges|data|2987628|import+UIKit

extension+CGSize+{
++++func+isGreaterOrEqual(to+size:+CGSize)+->+Bool+{
++++++++return+width+>=+size.width+&&
++++++++++++height+>=+size.height
++++}
}|code-block|syntax|javascript|2987629|然后您可以使用以下值对其进行测试：|2987630|let+size+=+CGSize(width:+100,+height:+100)
let+smaller+=+CGSize(width:+80,+height:+80)
let+bigger+=+CGSize(width:+120,+height:+120)

let+small+=+size.isGreaterOrEqual(to:+smaller)+//+true
let+big+=+size.isGreaterOrEqual(to:+bigger)+//+false
let+same+=+size.isGreaterOrEqual(to:+size)+//+true|2987631|entityMap^0|2|6|9|9|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|W|8|@]|E|@]|F|$J|K]]|$1|L|3|M|5|6|7|X|8|@]|E|@]|F|$]]|$1|N|3|O|5|I|7|Y|8|@]|E|@]|F|$J|K]]|$1|P|3|-4|5|6|7|Z|8|@]|E|@]|F|$]]]|Q|$]]

A pretty straight forward extension for Swift 4.0 on <code>CGSize</code>.
As OP states, this assumes that you are concerned with dimensions and not area.

<pre><code>import UIKit

extension CGSize {
 func isGreaterOrEqual(to size: CGSize) -&gt; Bool {
 return width &gt;= size.width &amp;&amp;
 height &gt;= size.height
 }
}
</code></pre>

You can then test it with the following values:

<pre><code>let size = CGSize(width: 100, height: 100)
let smaller = CGSize(width: 80, height: 80)
let bigger = CGSize(width: 120, height: 120)

let small = size.isGreaterOrEqual(to: smaller) // true
let big = size.isGreaterOrEqual(to: bigger) // false
let same = size.isGreaterOrEqual(to: size) // true
</code></pre>

blocks|key|1263604|text|灵感来自Jonathan's+answer。它应该更安全，因为有时值可以像这样的667.0000000000001。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1263605|extension+CGSize+{
++++static+func+<=+(left:+CGSize,+right:+CGSize)+->+Bool+{
++++++++let+delta+=+0.001
++++++++return+(left.width+-+right.width)+<+delta+&&+(left.height+-+right.height)+<+delta
++++}
}|code-block|syntax|javascript|1263606|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/55020714/1836420^0|14|H|4|A|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@$9|V|A|W|1|X]]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

Inspired by <a href="https://stackoverflow.com/a/55020714/1836420">Jonathan's</a> answer. It should be safer because sometimes the value can like this <code>667.0000000000001</code>.
<pre><code>extension CGSize {
 static func &lt;= (left: CGSize, right: CGSize) -&gt; Bool {
 let delta = 0.001
 return (left.width - right.width) &lt; delta &amp;&amp; (left.height - right.height) &lt; delta
 }
}
</code></pre>

I want to make sure a <code>CGSize</code> is smaller or equal to another <code>CGSize</code>. like: 

<pre><code>CGSize firstSize = CGSizeMake(1.0,1.0);
CGSize secondSize = CGSizeMake(5.0,3.0);
if(firstSize &lt;= secondSize){
 Do Stuff . . .
}
</code></pre>

How would I compare this?

How to compare two CGSize variables?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我希望确保一个CGSize小于或等于另一个CGSize。像这样：CGSize firstSize = CGSizeMake(1.0,1.0);CGSize secondSize = CGSizeMake(5.0,3.0);if(firstSize <= secondSize){ Do Stuff . . .}我该如何比较这个呢？

问如何比较两个CGSize变量？
EN

回答 7

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问如何比较两个CGSize变量？EN

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问如何比较两个CGSize变量？
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