Implicit conversion from enumeration type 'enum CGImageAlphaInfo' to different enumeration type 'CGB 分类: iOS开发2013-11-28 15:55 745人阅读 评论(0) 收藏 举报 CGImageAlphaInfoCGContextRefCGBitmapContextCreatCGBitmapInfokCGBitmapByteOrderDe 在使用xcode5 sdk iOS7环境,创建…
写程序时提示 implicit conversion from real matrix to real scalar的一个warning,主要问题在于将一个矩阵当成一个标量在使用.我的程序出现这个warning是在使用SIZE函数的时候,size函数返回的应该是一个1X2的矩阵,但我直接拿来当标量使用肯定是会有warning 解决方法:修改size(A)成size(A,1)…
问题场景 在使用^0.5.10版本的solidity时,如果使用this关键字会出现以下问题. 代码: require(tokenContract.balanceOf(this) >= _numberOfTokens);(issue is here) 错误信息: TypeError: Invalid type for argument in function call. Invalid implicit conversion from contract DappTokenSale to addr…
I need to convert between UTF-8, UTF-16 and UTF-32 for different API's/modules and since I know have the option to use C++11 am looking at the new string types. It looks like I can use string, u16string and u32string for UTF-8, UTF-16 and UTF-32. I a…
The constants for specifying the alpha channel information are declared with the CGImageAlphaInfo type but can be passed to this parameter safely. Just use a cast to suppress the warning: CGBitmapInfo bitmapInfo =(CGBitmapInfo) kBitmapInfo;…