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How do I execute inserts and updates in an Alembic upgrade script?
...ly straightforward to adapt this to the other forms.
Note that Alembic provides some basic data functions: op.bulk_insert() and op.execute(). If the operations are fairly minimal, use those. If the migration requires relationships or other complex interactions, I prefer to use the full power of mo...
How to permanently remove few commits from remote branch
... @MoshFeu True: git gc is not always run often enough on the remote side. For instance on GitHub: twitter.com/githubhelp/status/387926738161774592?lang=es
– VonC
Jan 13 at 13:58
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Split a List into smaller lists of N size
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@HaraldCoppoolse the OP didn't ask for selecting, only to split lists
– Phate01
Mar 22 '18 at 16:11
1
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How to set data attributes in HTML elements
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HTML
<div id="mydiv" data-myval="10"></div>
JS
var a = $('#mydiv').data('myval'); //getter
$('#mydiv').data('myval',20); //setter
Demo
Reference
From the reference:
jQuery itself uses the .data() method to save inf...
SELECT DISTINCT on one column
...r greater, you can use a CTE with ROW_NUMBER():
SELECT *
FROM (SELECT ID, SKU, Product,
ROW_NUMBER() OVER (PARTITION BY PRODUCT ORDER BY ID) AS RowNumber
FROM MyTable
WHERE SKU LIKE 'FOO%') AS a
WHERE a.RowNumber = 1
...
How to pass an object from one activity to another on Android
...ass of your main custom class has implemented Serializable interface to avoid any serialization exceptions. For example:
class MainClass implements Serializable {
public MainClass() {}
public static class ChildClass implements Serializable {
public ChildClass() {}
}
}
...
Android - styling seek bar
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I would extract drawables and xml from Android source code and change its color to red.
Here is example how I completed this for mdpi drawables:
Custom red_scrubber_control.xml (add to res/drawable):
<selector xmlns:android="http://schemas.android.com/apk/res/and...
PopupWindow - Dismiss when clicked outside
...roundDrawable on PopupWindow that should close the window if you touch outside of it.
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plupload图片上传插件的使用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...upload配置说明
Browse_button:触发浏览文件按钮标签的唯一id,,在flash、html5、和silverlight中能找到触发事件的源（我理解的，这个参数在队列部件不需要参见）
Container: 展现上传文件列表的容器，[默认是body]
chunk_size：当上传文件...
Separation of business logic and data access in django
...cation. Your users will appreciate this :-)
Expressing Commands
Django provides two easy ways of expressing commands; they are both valid options and it is not unusual to mix the two approaches.
The service layer
The service module has already been described by @Hedde. Here you define a separate mod...