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How to pull a random record using Django's ORM?
...['count']
random_index = randint(0, count - 1)
return self.all()[random_index]
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How do I convert a String object into a Hash object?
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The string created by calling Hash#inspect can be turned back into a hash by calling eval on it. However, this requires the same to be true of all of the objects in the hash.
If I start with the hash {:a => Object.new}, then its string represen...
mysqli or PDO - what are the pros and cons? [closed]
...nvincing somebody works better with a killer feature. So there it is:
A really nice thing with PDO is you can fetch the data, injecting it automatically in an object. If you don't want to use an ORM (cause it's a just a quick script) but you do like object mapping, it's REALLY cool :
class Student...
How to write a Python module/package?
I've been making Python scripts for simple tasks at work and never really bothered packaging them for others to use. Now I have been assigned to make a Python wrapper for a REST API. I have absolutely no idea on how to start and I need help.
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django urls without a trailing slash do not redirect
...ost.". "The APPEND_SLASH setting is only used if CommonMiddleware is installed...". I prefer Michael Gendin's answer for a cleaner solution.
– Wtower
Feb 11 '15 at 9:26
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Devise form within a different controller
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As Andres says, the form calls helpers which are specified by Devise and so aren't present when you access a Devise form from a non-Devise controller.
To get around this, you need to add the following methods to the helper class of the controller you...
How to wait for several Futures?
...ave several futures and need to wait until either any of them fails or all of them succeed.
8 Answers
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Difference between / and /* in servlet mapping url pattern
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<url-pattern>/*</url-pattern>
The /* on a servlet overrides all other servlets, including all servlets provided by the servletcontainer such as the default servlet and the JSP servlet. Whatever request you fire, it will end up in that servlet. This is thus a bad URL pattern for servle...
How do I check if an element is really visible with JavaScript? [duplicate]
In JavaScript, how would you check if an element is actually visible?
16 Answers
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MFC子窗口和父窗口（SetParent,SetOwner） - C/C++ - 清泛网 - 专注C/C++及内核技术
...、几个相关函数的说明
（1）获取/设置所有者窗口
win32 API提供了函数GetWindow函数（GW_OWNER 标志）来获取一个窗口的所有者窗口句柄。
GetWindow(hWnd, GW_OWNER)永远返回窗口的所有者(owner)。对于子窗口，函数返回 NULL，因为它们的父...