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Access a variable outside the scope of a Handlebars.js each loop
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If future readers are still having trouble like I was, have a look at the comment for this answer here. It took me a while after seeing this answer to see that one. You may need to use ../ repeatedly depending on how many sco...
常用Sql - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
常用Sqlmysql：drop table if exists tablename;不能写成drop table tablename if exists tablename;mysql：建立索引SqlCREATE TABLE t...mysql：drop table if exists tablename;
不能写成
drop table tablename if exists tablename;
mysql：建立索引Sql
CREATE TABLE tablename (
`ID...
nginx 基础配置全攻略，入门这一篇就够了！ - 更多技术 - 清泛网 - 专注C/C...
...分开
server_name tsingfun.com www.tsingfun.com;
# 自动加www
if ( $host = 'tsingfun.com' ) {
rewrite ^(.*)$ https://www.tsingfun.com$1 permanent;
}
# ssl证书地址
ssl_certificate /etc/nginx/ssl/www.tsingfun.com.pem; # pem文件的路径
ssl_certificate_key /etc/n...
What does $.when.apply($, someArray) do?
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what about the difference between $.when($, arrayOfPromises).done(...) and $.when(null, arrayOfPromises).done(...) (which I found both as proposed solutions in the forums...)
– zeroquaranta
Jun 21...
Why does PostgreSQL perform sequential scan on indexed column?
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If the SELECT returns more than approximately 5-10% of all rows in the table, a sequential scan is much faster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row ...
Get a list of all the files in a directory (recursive)
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weird..this gives the root path even if i preface it with a . It goes /./path
– light24bulbs
Jul 23 '18 at 15:05
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How to show and update echo on same line
...rrectly the man echo page for this.
echo had 2 options that could do this if I added a 3rd escape character.
The 2 options are -n and -e.
-n will not output the trailing newline. So that saves me from going to a new line each time I echo something.
-e will allow me to interpret backslash escape ...
Python: Best way to add to sys.path relative to the current running script
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If you don't want to edit each file
Install you library like a normal python libray
or
Set PYTHONPATH to your lib
or if you are willing to add a single line to each file, add a import statement at top e.g.
import import_...
Right query to get the current number of connections in a PostgreSQL DB
...fewer rows to count. But you are not likely going to be able to measure a difference.
Both queries are based on exactly the same data, so they will be equally accurate.
share
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improve this answer
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How do I get the file name from a String containing the Absolute file path?
...esses the file system so wouldn't expect the performance to be materially different from a substring/indexOf.
– assylias
Sep 26 '13 at 7:15
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