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Is there a way to get a collection of all the Models in your Rails app?
Is there a way that you can get a collection of all of the Models in your Rails app?
28 Answers
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Converting between java.time.LocalDateTime and java.util.Date
... completely new API for date and time. One of the most useful classes in this API is LocalDateTime , for holding a timezone-independent date-with-time value.
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Why is spawning threads in Java EE container discouraged?
One of the first things I've learned about Java EE development is that I shouldn't spawn my own threads inside a Java EE container. But when I come to think about it, I don't know the reason.
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How can I check whether an array is null / empty?
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There's a key difference between a null array and an empty array. This is a test for null.
int arr[] = null;
if (arr == null) {
System.out.println("array is null");
}
"Empty" here has no official meaning. I'm choosing to define empty as having 0 elements:
arr = new int[0];
if (arr.lengt...
Get the real width and height of an image with JavaScript? (in Safari/Chrome)
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Webkit browsers set the height and width property after the image is loaded. Instead of using timeouts, I'd recommend using an image's onload event. Here's a quick example:
var img = $("img")[0]; // Get my img elem
var pic_real_width, pic_real_height;
$("<img/>") // Make in memory ...
How to quit android application programmatically
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Since API 16 you can use the finishAffinity method, which seems to be pretty close to closing all related activities by its name and Javadoc description:
this.finishAffinity();
Finish this activity as well as all activities immediately below it in the cur...
What is the purpose of double curly braces in React's JSX syntax?
From the react.js tutorial we see this usage of double curly braces:
7 Answers
7
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How do I invert BooleanToVisibilityConverter?
I'm using a BooleanToVisibilityConverter in WPF to bind the Visibility property of a control to a Boolean . This works fine, but I'd like one of the controls to hide if the boolean is true , and show if it's false .
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How to close this ssh tunnel? [closed]
I opened a ssh tunnel as described in this post: Zend_Db: How to connect to a MySQL database over SSH tunnel?
3 Answers
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