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Check a collection size with JSTL
...ly using a too old EL version. You'll need JSTL fn:length() function then. From the documentation:
length( java.lang.Object) - Returns the number of items in a collection, or the number of characters in a string.
Put this at the top of JSP page to allow the fn namespace:
<%@ taglib prefix="fn" ...
How to detect DIV's dimension changed?
...like the following. Since, the majority of element size changes will come from the window resizing or from changing something in the DOM. You can listen to window resizing with the window's resize event and you can listen to DOM changes using MutationObserver.
Here's an example of a function that...
PHP's array_map including keys
... correct, changed :) it is nice how different they've made array_map from array_walk.
– eis
Oct 23 '12 at 18:10
...
no new variables on left side of :=
...
Remove the colon : from the second statement as you are assigning a new value to existing variable.
myArray = [...]int{11,12,14}
colon : is used when you perform the short declaration and assignment for the first time as you are doing in you...
Why is a div with “display: table-cell;” not affected by margin?
...
Cause
From the MDN documentation:
[The margin property] applies to all elements except elements with
table display types other than table-caption, table and inline-table
In other words, the margin property is not applicable...
Adjust width of input field to its input
... {
if (e.which && e.charCode) {
var c = String.fromCharCode(e.keyCode | e.charCode);
var $this = $(this);
resizeForText.call($this, $this.val() + c);
}
});
// Backspace event only fires for keyup
$inputs.find('input').keyup(fun...
What do the plus and minus signs mean in Objective-C next to a method?
... of instance members. Instance methods of the class can also not be called from within a class method unless they are being called on an instance of that class.
(-) Instance methods:-
On the other hand require an instance of the class to exist before they can be called, so an instance of a class n...
What's the best way to get the current URL in Spring MVC?
...UriComponentsBuilder and its static methods:
ServletUriComponentsBuilder.fromCurrentContextPath()
ServletUriComponentsBuilder.fromCurrentServletMapping()
ServletUriComponentsBuilder.fromCurrentRequestUri()
ServletUriComponentsBuilder.fromCurrentRequest()
They use RequestContextHolder under the h...
Show SOME invisible/whitespace characters in Eclipse
...back I transitioned to doing all my web application development in Eclipse from BBEdit. But I miss one little feature from BBEdit. I used to be able to show invisible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, but I wonder ...
how to add records to has_many :through association in rails
...ay' depends on your needs and what feels most comfortable. Confusion comes from differences ActiveRecord's behavior of the new and create methods and the << operator.
The new Method
new will not add an association record for you. You have to build the House and Agent records yourself:
hous...