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std::function and std::bind: what are they, and when should they be used?
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203
std::bind is for partial function application.
That is, suppose you have a function object f wh...
How to RSYNC a single file?
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answered Feb 15 '13 at 4:36
Michael PlaceMichael Place
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Call method in directive controller from other controller
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answered Feb 14 '13 at 21:46
satchmorunsatchmorun
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
...eir queries directly. It is private API so there is a huge risk that Rails 3 will totally break it, but for debugging, it is an ok solution.
The method is construct_finder_sql(options) (lib/active_record/base.rb:1681) you will have to use send because it is private.
Edit: construct_finder_sql was...
What does the “@” symbol do in Powershell?
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Don JonesDon Jones
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Why java classes do not inherit annotations from implemented interfaces?
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132
I'd say the reason is that otherwise a multiple-inheritance problem would occur.
Example:
@Re...
How to make rpm auto install dependencies
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103
Create a (local) repository and use yum to have it resolve the dependencies for you.
The CentOS...
Android: Bitmaps loaded from gallery are rotated in ImageView
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answered Sep 5 '10 at 22:03
JamesJames
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App Inventor 2 Canvas绘图教程 - 游戏精灵与动画实现 · App Inventor 2 中文网
...: 闪烁问题怎么解决？
Q2: 精灵图片背景透明？
Q3: 如何实现虚拟摇杆？
总结
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概述
Canvas组件是App Inventor 2中实现2D绘图和游戏的核心组件。它支持：
基本图形绘制（线、圆、矩...
How to perform OR condition in django queryset?
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573
from django.db.models import Q
User.objects.filter(Q(income__gte=5000) | Q(income__isnull=True))...