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UnicodeEncodeError: 'latin-1' codec can't encode character
...t. They map exactly to the Unicode characters U+0080–U+009F, which are a selection of control characters. They're control characters that aren't used very much which is why browsers got away with it, but it's annoying when you are trying to convert a sequences of bytes-as-Unicode.
...
Create a new Ruby on Rails application using MySQL instead of SQLite
I want to create my Rails application with MySQL, because I like it so much. How can I do that in the latest version of Rails instead of the default SQLite?
...
Kill a postgresql session/connection
...user to use this function. This works on all operating systems the same.
SELECT
pg_terminate_backend(pid)
FROM
pg_stat_activity
WHERE
-- don't kill my own connection!
pid <> pg_backend_pid()
-- don't kill the connections to other databases
AND datname = 'database...
Remove Identity from a column in a table
...USTERED INDEX IX_Original_Value ON Original (Value);
INSERT INTO Original
SELECT 'abcd'
UNION ALL
SELECT 'defg';
You can do the following:
--create new table with no IDENTITY
CREATE TABLE Original2
(
Id INT PRIMARY KEY
, Value NVARCHAR(300)
);
CREATE NONCLUSTERED INDEX IX_Original_Value2 ON O...
Python: How would you save a simple settings/config file?
...s')) # You know the datatype?
which outputs
List all contents
Section: mysql
x host:::localhost:::<type 'str'>
x user:::root:::<type 'str'>
x passwd:::my secret password:::<type 'str'>
x db:::write-math:::<type 'str'>
Section: other
x preprocessing_queue:::["preprocessing...
乐高机器人®组件 · App Inventor 2 中文网
...hoCount 获取计数器()
获取当前计数器值。
ResetTachoCount 重置计数器()
将当前计数器值设置为零。
RotateInDistance 按距离旋转(power,distance,useBrake)
按指定距离旋转马达。
RotateInDuration 按时长旋转(power,milliseconds,useBrake)
在一...
C#连接有用户名密码验证的MongoDB - 更多技术 - 清泛网 - 专注C/C++及内核技术
C#连接有用户名密码验证的MongoDBMongoDB连接字符串格式如下：mongodb: [username:password@]hostname[:port][ [database][?options]]使用MongoVUE输入用户名密码能够连接M...MongoDB连接字符串格式如下：mongodb://[username:password@]hostname[:port][/[database][?option...
How to use NULL or empty string in SQL
...
Select *
From Table
Where (col is null or col = '')
Or
Select *
From Table
Where IsNull(col, '') = ''
share
|
improve t...
支撑Github的开源技术 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...取服务状态等，在2013年的QCon北京中，Giuthub的工程曾针对如何使用Hubot做运维进行过分享：《ChatOps at GitHub》。
d3
d3是使用JavaScript实现的数据可视化框架，使用HTML、SVG和CSS等，在d3的基础之上发展处诸如crossfilter、NVD3.js等一...
How to secure database passwords in PHP?
...in your httpd.conf or virtual hosts file file. If you do that you can call mysql_connect() with no parameters, which means PHP will never ever output your information.
This is how you specify these values in those files:
php_value mysql.default.user myusername
php_value mysql.default.password...