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What is the difference between `after_create` and `after_save` and when to use which?
... readers should note that, according to the docs, ActiveRecord's update_all does not invoke any callbacks, including after_*
– user2426679
Jan 10 at 19:34
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jQuery convert line breaks to br (nl2br equivalent)
... if you get the error "x.replace is not a function" then use x.toString().replace
– Vörös Amadea
Aug 15 '19 at 12:18
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How to reset Android Studio
... this answer solved my problem that android studio can not recognize type String.
– Helin Wang
May 27 '14 at 21:56
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Gesture recognizer and button actions
...nizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
// Disallow recognition of tap gestures in the segmented control.
if ((touch.view == yourButton)) {//change it to your condition
return NO;
}
return YES;
}
hope it will help
Edit
As Daniel noted you must con...
Get all Attributes from a HTML element with Javascript/jQuery
...example, will this include an attribute named 'dataFld' with value 'null' (string value) or would it exclude it?
– mightyiam
Jun 19 '14 at 13:55
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Octave-Gnuplot-AquaTerm error: set terminal aqua enhanced title “Figure 1”…unknown terminal type"
I've installed Octave and gnuplot via Homebrew, and downloaded AquaTerm.dmg.
When I try to plot, I get the following message:
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javax.xml.bind.UnmarshalException: unexpected element (uri:“”, local:“Group”)
...hat.. Thanks alot mate.. :) . I just made the namespace mentioned to empty string.
– Arundev
Jun 13 '17 at 11:45
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正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...尽可能少重复
处理选项
在C#中，你可以使用Regex(String, RegexOptions)构造函数来设置正则表达式的处理选项。如：Regex regex = new Regex(@"\ba\w{6}\b", RegexOptions.IgnoreCase);
上面介绍了几个选项如忽略大小写，处理多行等，这些选项...
400 BAD request HTTP error code meaning?
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Keep in mind that client developer may do strange things and try to parse strings which you return as human readable description. And by changing the strings you will break such badly written clients. So always provide machine readable description and try to avoid reporting additional information i...
What's the difference between event.stopPropagation and event.preventDefault?
...;/div>
With stopPropagation, only the button's click handler is called while the div's click handler never fires.
Where as if you use preventDefault, only the browser's default action is stopped but the div's click handler still fires.
Below are some docs on the DOM event properties and ...