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What is `related_name` used for in Django?
...go automatically creates one using the name of your model with the suffix _set, for instance User.map_set.all().
If you do specify, e.g. related_name=maps on the User model, User.map_set will still work, but the User.maps. syntax is obviously a bit cleaner and less clunky; so for example, if you h...
App Inventor 2 字典(Dictionary)操作教程 - 键值对数据结构 · App Inventor 2 中文网
...创建含数据的字典）
添加和修改键值对
set value for key（设置键值对）
从2个键值对增加到3个或更多
获取值
get value for key（根据键获取值）
get value at key path（沿路径获取嵌套值）
set val...
How do I set the value property in AngularJS' ng-options?
.../select>
Update
With the updates on AngularJS, it is now possible to set the actual value for the value attribute of select element with track by expression.
<select ng-options="obj.text for obj in array track by obj.value">
</select>
How to remember this ugly stuff
To all the ...
UILabel is not auto-shrinking text to fit label size
...tangle (this property is effective only when the numberOfLines property is set to 1).
When setting this property, minimumScaleFactor MUST be set too (a good default is 0.5).
Swift
var adjustsFontSizeToFitWidth: Bool { get set }
Objective-C
@property(nonatomic) BOOL adjustsFontSizeToFitWidth;
A Bo...
TextView.setTextSize behaves abnormally - How to set text size of textview dynamically for different
Calling TextView.setTextSize() is working abnormally. Right after the call to setTextSize if we get a getTextSize its returning a much higher value that what we set it to earlier.
...
Django Admin - change header 'Django administration' text
...lt;/h1>
{% endblock %}
For this to work, you need to have the correct settings for your project, namely in settings.py:
Make sure /projectdir/templates/ is added into TEMPLATE_DIRS.
Make sure django.template.loaders.filesystem.Loader is added into TEMPLATE_LOADERS.
See docs for more informa...
Algorithm to detect corners of paper sheet in photo
What is the best way to detect the corners of an invoice/receipt/sheet-of-paper in a photo? This is to be used for subsequent perspective correction, before OCR.
...
Panel.Dock Fill ignoring other Panel.Dock setting
If you create a panel on a form and set it to Dock=Top and drop another panel and set its Dock=Fill, it may fill the entire form, ignoring the first panel. Changing the tab order does nothing.
...
SQL: capitalize first letter only [duplicate]
...e column? If its data you've to change, then use this:
UPDATE [yourtable]
SET word=UPPER(LEFT(word,1))+LOWER(SUBSTRING(word,2,LEN(word)))
If you just wanted to change it only for displaying and do not need the actual data in table to change:
SELECT UPPER(LEFT(word,1))+LOWER(SUBSTRING(word,2,LEN(...
TaifunWiFi 拓展：WiFi Manager WiFi管理器扩展 · App Inventor 2 中文网
...抑制成功消息()
返回是否抑制成功消息的设置状态。
SetSuppressSuccessMessage 设置抑制成功消息(抑制)
设置是否抑制成功消息显示。true为抑制，false为显示。
LocalIP 本地IP地址()
返回本地IP地址。如果WiFi启用则返回WiFi IP，否...