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Can angularjs routes have optional parameter values?
Can I set a route with optional params (same template and controller, but some params should be ignored if they don't exist?
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How to prepend a string to a column value in MySQL?
...hat:
UPDATE tbl SET col=CONCAT('test',col);
If you want to get cleverer and only update columns which don't already have test prepended, try
UPDATE tbl SET col=CONCAT('test',col)
WHERE col NOT LIKE 'test%';
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离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
web服务启动报错：
Picked up JAVA_TOOL_OPTIONS: "-Dfile.encoding=UTF-8"
Executing [D:\appinventor\AppInventor2\resources\app.asar.unpacked\OpenJDK\bin\java, --add-opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.ne...
What does the [Flags] Enum Attribute mean in C#?
...t expect in bitwise operations, because by default the values start with 0 and increment.
Incorrect declaration:
[Flags]
public enum MyColors
{
Yellow, // 0
Green, // 1
Red, // 2
Blue // 3
}
The values, if declared this way, will be Yellow = 0, Green = 1, Red = 2, Blu...
UIView Infinite 360 degree rotation animation?
I'm trying to rotate a UIImageView 360 degrees, and have looked at several tutorials online. I could get none of them working, without the UIView either stopping, or jumping to a new position.
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When to use thread pool in C#? [closed]
I have been trying to learn multi-threaded programming in C# and I am confused about when it is best to use a thread pool vs. create my own threads. One book recommends using a thread pool for small tasks only (whatever that means), but I can't seem to find any real guidelines. What are some consid...
Callback on CSS transition
...vent listener to occur in bubble mode. One use of this is to attach event handlers right before they are needed in bubble mode. =) 37signals.com/svn/posts/…
– rybosome
Jul 29 '12 at 18:31
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Placeholder in IE9
...der jQuery Plugin
- by Mathias Bynens (a collaborator on HTML5 Boilerplate and jsPerf)
https://github.com/mathiasbynens/jquery-placeholder
Demo & Examples
http://mathiasbynens.be/demo/placeholder
p.s
I have used this plugin many times and it works a treat. Also it doesn't submit the placehol...
How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
I have ViewPager and below it I have 10 buttons. By clicking on button, for example #4, the pager goes immediately to page #4 by mPager.setCurrentItem(3); . But, I want to disable the paging by swiping with finger horizontally. Thus, the paging is done ONLY by clicking on the buttons.
So, how I ...
How to grep (search) committed code in the Git history
...ommit content (i.e., actual lines of source, as opposed to commit messages and the like), you need to do:
git grep <regexp> $(git rev-list --all)
git rev-list --all | xargs git grep <expression> will work if you run into an "Argument list too long" error.
If you want to limit the sea...