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Find the nth occurrence of substring in a string
...,s)]
[0, 2, 11]
>>> [m.start() for m in re.finditer(r"ab",s)][2] #index 2 is third occurrence
11
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您好，如果我想设置如果到某个时间就显示文字，怎么做 - App Inventor 2 中...
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获取当前时间和格式化，参考：https://bbs.tsingfun.com/forum.php?mod=viewthread&tid=1534&fromguid=hot& ...
感觉还是不是很懂引用: App Inventor 2 发表于 2024-03-22 19:09
获取当前时间和格式化，参考：https://bbs.tsingfun.com/forum.php?mod=...
PDOException SQLSTATE[HY000] [2002] No such file or directory
...fortrabbit, but as soon as I connect to SSH to run some commands (such as php artisan migrate or php artisan db:seed ) I get an error message:
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Socket.IO - how do I get a list of connected sockets/clients?
...or (var id in ns.connected) {
if(roomId) {
var index = ns.connected[id].rooms.indexOf(roomId);
if(index !== -1) {
res.push(ns.connected[id]);
}
} else {
res.push(ns.connected[id]);
...
Convert PHP closing tag into comment
...w this regex, I'd say: Hmmm, what's going on? But that is downright and totally subjective.
– ppeterka
Mar 5 '13 at 9:20
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PHP MySQL Google Chart JSON - Complete Example
...generating a Google Chart (pie, bar, column, table) using a combination of PHP and MySQL. I finally managed to get one example working.
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
...change
rename_table :old_table_name, :new_table_name
end
And all of my indexes were taken care of for me. I did not need to manually update the indexes by removing the old ones and adding new ones.
And it works using the change for going up or down in regards to the indexes as well.
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探讨nginx与php-fpm是不是以多进程多线程方式运行的 - 更多技术 - 清泛网 -...
探讨nginx与php-fpm是不是以多进程多线程方式运行的Nginx在nginx的配置文件中可以设置开启多少个nginx进程，如下：worker_processes 2;同时也可以设置每个进程的最大连接数，如下：worker_co Nginx
在nginx的配置文件中可以设置开启多少...
Difference between float and double in php?
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There is no difference in PHP. float, double or real are the same datatype.
At the C level, everything is stored as a double.
The real size is still platform-dependent.
See the manual for more details:
http://www.php.net/manual/en/language.types.flo...
How to slice an array in Bash
...rns the contents of the array, :1:2 takes a slice of length 2, starting at index 1.
A=( foo bar "a b c" 42 )
B=("${A[@]:1:2}")
C=("${A[@]:1}") # slice to the end of the array
echo "${B[@]}" # bar a b c
echo "${B[1]}" # a b c
echo "${C[@]}" # bar a b c 42
echo "${C[@]...