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css html hover on mouse over on active onmouse

<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.one{
padding: 10px;
cursor: pointer;
box-shadow: 2px 2px 2px #aaa;
}
.one:hover{
box-shadow: 3px 3px 3px #aaa;
z-index: 2;
}
.one:active{
box-shadow: 1px 1px 1px #aaa;
}
.one::selection{
background: #aaa;
}
</style>
</head>
<body style="font-family: sans-serif;">
<a href="new.html">hello</a>
<span class="one">Hello</span>
</body>
</html>

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android hide actionbar

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go url encoding

func  QueryUnescape func QueryUnescape (s string ) ( string , error ) QueryUnescape does the inverse transformation of QueryEscape, converting %AB into the byte 0xAB and '+' into ' ' (space). It returns an error if any % is not followed by two hexadecimal digits. func  QueryUnescape func QueryUnescape (s string ) ( string , error ) QueryUnescape does the inverse transformation of QueryEscape, converting %AB into the byte 0xAB and '+' into ' ' (space). It returns an error if any % is not followed by two hexadecimal digits.
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go golang get disk usage free space remain info

package main import ( "fmt" "syscall" ) func main() { fmt.Println(DiskUsage("./")) } func DiskUsage(path string) uint64 { fs := syscall.Statfs_t{} err := syscall.Statfs(path, &fs) if err != nil { return 0 } return fs.Bfree * uint64(fs.Bsize) } //All space   = fs.Blocks * uint64(fs.Bsize) //Free space = fs.Bfree * uint64(fs.Bsize) //Used space= fs.All - disk.Free
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