library("Biostrings") Loading required package: BiocGenerics Attaching package: ‘BiocGenerics’ The following objects are masked from ‘package:dplyr’: combine, intersect, setdiff, union The following objects are masked from ‘package:stats’: IQR, mad, sd, var, xtabs The following objects are masked from ‘package:base’: anyDuplicated, aperm, append, as.data.frame, basename, cbind, colnames, dirname, do.call, duplicated, eval, evalq, Filter, Find, get, grep, grepl, intersect, is.unsorted, lapply, Map, mapply, match, mget, order, paste, pmax, pmax.int, pmin, pmin.int, Position, rank, rbind, Reduce, rownames, sapply, setdiff, sort, table, tapply, union, unique, unsplit, which.max, which.min Loading required package: S4Vectors Loading required package: stats4 Attaching package: ‘S4Vectors’ The following objects are masked from ‘package:dplyr’: first, rename The following objects are masked from ‘package:base’: expand.grid, I, unname Loading required package: IRanges Attaching package: ‘IRanges’ The following objects are masked from ‘package:dplyr’: collapse, desc, slice Loading required package: XVector Loading required package: GenomeInfoDb Attaching package: ‘Biostrings’ The following object is masked from ‘package:base’: strsplit
时间: 2024-04-28 13:22:26 浏览: 10
这段信息提示是在加载R语言的Biostrings包时出现的,其中包含了一些被遮蔽的函数。同时,也加载了其他依赖的包S4Vectors、IRanges和XVector,以及GenomeInfoDb。这些包主要是用于生物学数据处理的。
在加载Biostrings包后,可以使用其中的函数来处理DNA和蛋白质序列数据,例如读取FASTA格式的文件,进行序列比对和搜索等操作。
相关问题
Attaching package: ‘dplyr’ The following objects are masked from ‘package:stats’: filter, lag
这个报错的意思是你在导入 `dplyr` 包时,会覆盖 `stats` 包中同名的函数 `filter` 和 `lag`,从而导致 `stats` 包中的这两个函数被隐藏,无法使用。解决这个问题的方法有两种:
1. 在调用这两个函数时,明确指定使用 `stats` 包中的函数,例如 `stats::filter()` 和 `stats::lag()`。
2. 在导入包时,使用 `library()` 函数的 `exclude` 参数来防止发生命名冲突,例如使用 `library(dplyr, exclude = c("filter", "lag"))` 来导入 `dplyr` 包并排除掉 `filter` 和 `lag` 这两个函数。
在Linux 下使用 C 语言实现 socket 编程的示例代码(服务器端):
以下是在 Linux 下使用 C 语言实现 socket 编程的示例代码(服务器端):
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#define PORT 8080
int main(int argc, char const *argv[]) {
int server_fd, new_socket, valread;
struct sockaddr_in address;
int opt = 1;
int addrlen = sizeof(address);
char buffer[1024] = {0};
char *hello = "Hello from server";
// Creating socket file descriptor
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
perror("socket failed");
exit(EXIT_FAILURE);
}
// Forcefully attaching socket to the port 8080
if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
perror("setsockopt");
exit(EXIT_FAILURE);
}
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(PORT);
// Forcefully attaching socket to the port 8080
if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0) {
perror("bind failed");
exit(EXIT_FAILURE);
}
if (listen(server_fd, 3) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0) {
perror("accept");
exit(EXIT_FAILURE);
}
valread = read(new_socket, buffer, 1024);
printf("%s\n", buffer);
send(new_socket, hello, strlen(hello), 0);
printf("Hello message sent\n");
return 0;
}
```
代码中创建了一个 socket 文件描述符,并将其绑定到本地 IP 地址的 8080 端口上。然后,它监听传入的连接请求,并接受它们。一旦连接被接受,服务器将读取客户端发送的消息,发送一个回复消息,然后关闭连接。