wuhn - 博客园

2014年10月29日

摘要： Fun with layers这篇文章的有些内容很奇怪，我根本就没有这种现象，所以暂时就这样吧In this post, I’ll explain how to add a border, rounded corners, and drop shadow to any UIView using so... 阅读全文

posted @ 2014-10-29 13:57 wuhn 阅读(190) 评论(0) 推荐(0) 编辑

Property cannot be found on forward class object?

摘要： I have a UIView and I'm trying to set its layer properties.self.colorSwatch = [[UIView alloc] initWithFrame:CGRectMake(400, 150, 100, 100)];self.color... 阅读全文

posted @ 2014-10-29 11:29 wuhn 阅读(1009) 评论(0) 推荐(0) 编辑

100% opacity UILabel over a 50% opacity background (UIView?) UIView是百分之50透明而上面的UILable是100%不透明

摘要： So right now I have a UIView with a UILabel in it. I want the background to have an opacity < 1.0 and the label to have an opacity of 1.0. However sin... 阅读全文

posted @ 2014-10-29 11:27 wuhn 阅读(221) 评论(0) 推荐(0) 编辑

Go语言字符串

摘要：在所有编程语言中都涉及到大量的字符串操作，可见熟悉对字符串的操作是何等重要。 Go中的字符串和C#中的一样(java也是)，字符串内容在初始化后不可修改。需要注意的是在Go中字符串是有UTF-8编码的，请注意保存文件时将文件编码格式改成UTF-8(特别是在windows下)。初始化var str ... 阅读全文

posted @ 2014-10-29 00:18 wuhn 阅读(2398) 评论(0) 推荐(0) 编辑

2014年10月28日

A Tour of Go Buffered Channels

摘要： Channels can bebuffered. Provide the buffer length as the second argument tomaketo initialize a buffered channel:ch := make(chan int, 100)Sends to a b... 阅读全文

posted @ 2014-10-28 23:44 wuhn 阅读(188) 评论(0) 推荐(0) 编辑

A Tour of Go Channels

摘要： Channels are a typed conduit through which you can send and receive values with the channel operator,<-.ch <- v // Send v to channel ch.v := <-ch ... 阅读全文

posted @ 2014-10-28 23:40 wuhn 阅读(134) 评论(0) 推荐(0) 编辑

A Tour of Go Concurrency

摘要： The next section covers Go's concurrency primitives.A Tour of GoGoroutinesAgoroutineis a lightweight thread managed by the Go runtime.go f(x, y, z)sta... 阅读全文

posted @ 2014-10-28 23:32 wuhn 阅读(164) 评论(0) 推荐(0) 编辑

exercise.tour.go google的go官方教程答案

摘要： /* Exercise: Loops and Functions #43 */package main import ( "fmt" "math") func Sqrt(x float64) float64 { z := float64(2.) s := float64(0)... 阅读全文

posted @ 2014-10-28 23:29 wuhn 阅读(781) 评论(0) 推荐(0) 编辑

Exercise: Rot13 Reader

摘要： package mainimport ( "io" "os" "strings" "fmt")type rot13Reader struct { r io.Reader}func (rot13 rot13Reader)Read(p []byte) (n int, err... 阅读全文

posted @ 2014-10-28 23:27 wuhn 阅读(482) 评论(0) 推荐(0) 编辑

A Tour of Go Exercise: Images

摘要： Remember the picture generator you wrote earlier? Let's write another one, but this time it will return an implementation ofimage.Imageinstead of a sl... 阅读全文

posted @ 2014-10-28 23:09 wuhn 阅读(391) 评论(0) 推荐(0) 编辑

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