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Android setTextSize

在帮TextView控件设置大小的时候，发现和在XML中用PX设置的不一样，原因是setTextSize()默认的单位是sp，可以用另一个设置字体大小的方法：
setTextSize(int unit, int size)
第一个参数可设置如下静态变量：
TypedValue.COMPLEX_UNIT_PX : Pixels
TypedValue.COMPLEX_UNIT_SP : Scaled Pixels
TypedValue.COMPLEX_UNIT_DIP : Device Independent Pixels
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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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How can I create a Windows bootable USB stick using Ubuntu?

even other Linux distros as long as  GParted  and  GRUB  are installed. Install GParted and GRUB on Ubuntu with: sudo apt-get install gparted grub-pc-bin p7zip-full ntfs-3g For BIOS: MBR partition scheme Rewrite the partition table as  msdos  and format your USB drive as  NTFS  using GParted (and then "Manage flags" and add the  boot  flag). In GParted, right click the USB partition and select  Information . Copy the UUID somewhere as you will need it. Copy all files from mounted Windows ISO or DVD to USB drive using your favorite file manager. Go to USB drive and if the folder named  boot  has uppercase characters, make them all lowercase by renaming it. Install GRUB on USB: sudo grub-install --target=i386-pc --boot-directory="/<USB_mount_folder>/boot" /dev/sdX Create a GRUB config file in the USB drive folder  boot/grub  with the name  grub.cfg . Write this into the file: echo "If...
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