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Python Logging (function name, file name, line number) using a single file
...dy provided funcName variable
import logging
logger = logging.getLogger('root')
FORMAT = "[%(filename)s:%(lineno)s - %(funcName)20s() ] %(message)s"
logging.basicConfig(format=FORMAT)
logger.setLevel(logging.DEBUG)
Then anywhere you want, just add:
logger.debug('your message')
Example output...
Select last N rows from MySQL
I want to select last 50 rows from MySQL database within column named id which is primary key . Goal is that the rows should be sorted by id in ASC order, that’s why this query isn’t working
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PHP mkdir: Permission denied problem
..., all you need it's to obtain correct path. I did it this way:
<?php
$root = $_SERVER["DOCUMENT_ROOT"];
$dir = $root . '/somefolder/';
if( !file_exists($dir) ) {
mkdir($dir, 0755, true);
}
?>
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John Carmack's Unusual Fast Inverse Square Root (Quake III)
... function in the Quake III source code which calculates the inverse square root of a float, 4x faster than regular (float)(1.0/sqrt(x)) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why this works so much faster t...
SQL statement to get column type
...
If you're using MySQL you could try
SHOW COLUMNS FROM `tbl_name`;
SHOW COLUMNS on dev.mysql.com
Otherwise you should be able to do
DESCRIBE `tbl_name`;
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Using DISTINCT and COUNT together in a MySQL Query
Is something like this possible:
7 Answers
7
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Update date + one year in mysql
When I want setting numerical value +1 in mysql table, I use e.g.:
3 Answers
3
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MySQL - Rows to Columns
...ts, but I only found solutions for SQL Server/Access. I need a solution in MySQL (5.X).
12 Answers
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致PHP路上的“年轻人” - PHP - 清泛IT社区，为创新赋能！
...段落的“过来人”，还是想写点东西给“年轻人”。关于如何成长？我直白的答案还是建议通过实践，通过项目来成长。虽然提倡多参加项目，但项目不能是乱七八糟的项目什么都去尝试做，对于刚工作的同学，希望做这两类项...
mysql实现split分割字符串（length, SUBSTRING_INDEX, substring） - 爬虫/...
由于MySql没有直接的split函数，只提供了length, SUBSTRING_INDEX, substring三个函数，这里介绍如何用这三个函数实现split功能。
# SUBSTRING_INDEX(str, delim, count)：返回字符串 str 中在第 count 个出现的分隔符 delim 之前的子串。如果 count 是...