Perform Secure-by-default or Woefully Insecure ‘DNS’ Queries
您最多选择25个主题 主题必须以字母或数字开头,可以包含连字符 (-),并且长度不得超过35个字符

123456789
  1. "bits" <- function(object, bit) {
  2. (object %/% (2^bit)) %% 2
  3. }
  4. "bits<-" <- function(object, bit, value) {
  5. mask <- 2^bit
  6. object <- object+(value - ((object %/% mask) %% 2))*mask
  7. object
  8. }