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Using an if statement to check if a div is empty
...eftmenu:empty').length ) {
// ...
Keep in mind that empty means no white space either. If there's a chance that there will be white space, then you can use $.trim() and check for the length of the content.
if( !$.trim( $('#leftmenu').html() ).length ) {
// ...
...
How to check if BigDecimal variable == 0 in java?
...s():
if (price.compareTo(BigDecimal.ZERO) == 0) // see below
Comparing with the BigDecimal constant BigDecimal.ZERO avoids having to construct a new BigDecimal(0) every execution.
FYI, BigDecimal also has constants BigDecimal.ONE and BigDecimal.TEN for your convenience.
Note!
The reason you ...
Why is Java's AbstractList's removeRange() method protected?
...eRange method in AbstractList (and also in ArrayList ) is protected ? It looks like a quite well-defined and useful operation, but still, to use it, we're forced to subclass the List implementation.
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How to convert an Array to a Set in Java
...n array to a Set in Java. There are some obvious ways of doing this (i.e. with a loop) but I would like something a bit neater, something like:
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Floating point vs integer calculations on modern hardware
I am doing some performance critical work in C++, and we are currently using integer calculations for problems that are inherently floating point because "its faster". This causes a whole lot of annoying problems and adds a lot of annoying code.
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Access denied for user 'root@localhost' (using password:NO)
I'm new to MySQL, I'm trying to run WordPress in my Windows desktop and it needs MySQL.
16 Answers
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What is the difference between Class Path and Build Path
I'm confused with these two terms.
6 Answers
6
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How to detect the device orientation using CSS media queries?
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CSS to detect screen orientation:
@media screen and (orientation:portrait) { … }
@media screen and (orientation:landscape) { … }
The CSS definition of a media query is at http://www.w3.org/TR/css3-mediaqueries/#orientation
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MySQL error 1449: The user specified as a definer does not exist
...two options:
1. Change the DEFINER
This is possibly easiest to do when initially importing your database objects, by removing any DEFINER statements from the dump.
Changing the definer later is a more little tricky:
How to change the definer for views
Run this SQL to generate the necessary ALT...
Git push/clone to new server
I'm just learning Git and there is something I can't work out. After creating and using a git repository locally on my Mac, can I push a copy to another server somewhere else? I am behind a firewall so unfortunately I can't run git clone from the other machine.
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