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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" ...
Understanding repr( ) function in Python
...n thing is that you get a fairly good idea of the type and logical "value" from looking the the repr output.
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no new variables on left side of :=
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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...
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
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Is it good practice to use the xor operator for boolean checks? [closed]
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I think you've answered your own question - if you get strange looks from people, it's probably safer to go with the more explicit option.
If you need to comment it, then you're probably better off replacing it with the more verbose version and not making people ask the question in the first ...
Why is a div with “display: table-cell;” not affected by margin?
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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...
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 ...
Replace one character with another in Bash
...his:
tr " " .
Example:
# echo "hello world" | tr " " .
hello.world
From man tr:
DESCRIPTION
Translate, squeeze, and/or delete characters from standard input, writ‐
ing to standard output.
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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...