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Windows启动过程 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...护两部分:
1.系统启动代码 (共有446 bytes)
2.分区表入口(16 bytes colored entries in the bottom)
3、根据系统代码,我们可以找到系统所有的分区,并找到系统启动分区。如果分区表入口的第一个字节值为0x80,那么可以确认这就...
js实现ReplaceAll全部替换 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...替换,而JS 并没有提供replaceAll这样的方法,但使用正则表可以达成Replace 的效果。正则表达式:
str.replace(/word/g,"newWord")
g 的意义是:执行全局匹配(查找所有匹配而非在找到第一个匹配后停止)。
以上写法有个类同的写法...
重访切尔诺贝利城:落满灰尘的洋娃娃 - life组图 - 清泛网 - 专注C/C++及内核技术
...是历史上最严重的核电事故,也是首例被国际核事件分级表评为第七级事件的特大事故(目前为止第二例为2011年3月11日发生于日本福岛县的福岛第一核电站事故)。
【解决】Linux mysql如何重置root密码? - 更多技术 - 清泛网 - 专注C/C++及内核技术
...MySQL服务器:
sudo systemctl stop mysql
4. 略过grant授权表启动mysql/MariaDB服务
启用--skip-grant-tables选项后,任何人都可以在没有密码和所有权限的情况下连接到数据库服务器:
mysqld_safe --skip-grant-tables &
上面命令末尾的&...
Log all queries in mysql
...ediumtext NOT NULL,
`thread_id` bigint(21) unsigned NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
CREATE TABLE `general_log` (
`event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext NOT NU...
Linux下安装项目管理工具Redmine - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...有错误信息。)
# rake db:migrate RAILS_ENV="production" //创建表
# rake redmine:load_default_data RAILS_ENV="production" //加载默认配置
这里会要求选择默认语言,我选的中文zh:
Select language: bg, ca, cs, da, de, en, es, fi, fr, he, hu, it, ja, ko, lt, nl, no...
Reading an Excel file in PHP [closed]
...l file. If you want to import it into mysql, you could simply save it as a CSV formatted file and then use fgetcsv to parse it.
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For each row in an R dataframe
...nction is vectorized, then you can skip the loop and just use cat or write.csv:
write.csv(data.frame(wellid=getWellID(well$name, well$plate),
value1=well$value1, value2=well$value2), file=outputFile)
If getWellID() isn't vectorized, then Jonathan's recommendation of using by or knguyen'...
Importing data from a JSON file into R
...y(httr)
library(jsonlite)
I have had issues converting json to dataframe/csv. For my case I did:
Token <- "245432532532"
source <- "http://......."
header_type <- "applcation/json"
full_token <- paste0("Bearer ", Token)
response <- GET(n_source, add_headers(Authorization = full_tok...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)
...tring.
So just replace .encode with .decode, and it should work (if your .csv is UTF-8-encoded).
Nothing to be ashamed of, though. I bet 3 in 5 programmers had trouble at first understanding this, if not more ;)
Update:
If your input data is not UTF-8 encoded, then you have to .decode() with the ...