public class RateScreen extends MainScreen {
int mScrWidth = Display.getWidth();
int mScrHeight = Display.getHeight();
int mImgWidth = 40;
int mImgHeight = 40;
final BitmapField,bitmapField1,bitmapField2,bitmapField3,
bitmapField4,bitmapField5,bitmapField6;
final HorizontalFieldManager
之后
install.packages("devtools")
devtools::install_github("DataComputing/DataComputing")
首先,它给出了错误消息
'C:\Program' is not recognized as an internal or external command,
operable program or batch file.
Error: Command failed (1)
因此,我在C:(而不是C:programfiles)中卸载并重新安装,然后再次尝试,现在出现了新的错误
我正在尝试在R中安装dplyr包。
当我这样做的时候,我得到了以下错误:
> install.packages("dplyr")
Warning in install.packages :
InternetOpenUrl failed: ''
Warning in install.packages :
InternetOpenUrl failed: ''
Warning in install.packages :
unable to access index for repository https://mirrors.tuna