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Difference between java.util.Random and java.security.SecureRandom
...s plenty more research that clearly shows that you should never use an LCG for security-critical purposes. This also means that your random numbers are predictable right now, something you don't want for session IDs and the like.
How to break a Linear Congruential Generator
The assumption that an ...
Google Maps API v3: How do I dynamically change the marker icon?
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Call the marker.setIcon('newImage.png')... Look here for the docs.
Are you asking about the actual way to do it? You could just create each div, and a add a mouseover and mouseout listener that would change the icon and back for the markers.
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Rails: Default sort order for a rails model?
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default_scope
This works for Rails 4+:
class Book < ActiveRecord::Base
default_scope { order(created_at: :desc) }
end
For Rails 2.3, 3, you need this instead:
default_scope order('created_at DESC')
For Rails 2.x:
default_scope :order =>...
default select option as blank
... adding a hidden attribute to the option element did the magic for me! did not expect it to be this easy. thanks
– SMPLYJR
May 14 '19 at 7:18
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Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
...in a parent-child hierarchy.
The applicationContext.xml defines the beans for the "root webapp context", i.e. the context associated with the webapp.
The spring-servlet.xml (or whatever else you call it) defines the beans for one servlet's app context. There can be many of these in a webapp, one ...
Remove scroll bar track from ScrollView in Android
... not needing the ScrollView in the first place, I worked that out myself before checking back here. The 'setScrollBarStyle' on the web view worked a treat, thanks!
– Mick Byrne
Jun 8 '11 at 2:06
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Prevent wrapping of span or div
... the elements contained and white-space:nowrap on the parent did the trick for me. Thanks very much!
– Noitidart
Oct 11 '15 at 21:02
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Chrome Extension Message passing: response not sent
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From the documentation for chrome.runtime.onMessage.addListener:
This function becomes invalid when the event listener returns, unless you return true from the event listener to indicate you wish to send a response asynchronously (this will kee...
Float right and position absolute doesn't work together
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Use
position:absolute;
right: 0;
No need for float:right with absolute positioning
Also, make sure the parent element is set to position:relative;
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Logical operator in a handlebars.js {{#if}} conditional
...the logicless nature since there's already IF, UNLESS, and EACH... so much for logicless
– Asaf
Sep 7 '15 at 20:01
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