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Difference between volatile and synchronized in Java
...rdering (see http://www.cs.umd.edu/users/pugh/java/memoryModel/jsr-133-faq.html#volatile). For the purposes of visibility, each access to a volatile field acts like half a synchronization.
Under the new memory model, it is still true that volatile variables cannot be reordered with each other. ...
How to have a transparent ImageButton: Android
...ce changes." from developer.android.com/reference/android/view/SurfaceView.html
– Quintin Robinson
Aug 4 '10 at 6:02
57
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Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
...post_controller.rb
def index
@posts = Post.all
end
#app/view/posts/index.html.erb
<%= debug(@posts) %>
#start your server
rails -s
results (in browser)
- !ruby/object:Post
raw_attributes:
id: 2
title: My Second Post
body: Welcome! This is another example post
published...
How can I increment a date by one day in Java?
...roper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DateUtils.html. It is handy especially when you have to use it multiple places in your project and would not want to write your one liner method for this.
The API says:
addDays(Date date, int amount) : Adds a number of days to a...
Zoom to fit all markers in Mapbox or Leaflet
...an extend function, just like google maps.
http://leafletjs.com/reference.html#latlngbounds
So you could simply use:
var latlngbounds = new L.latLngBounds();
The rest is exactly the same.
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How can I do time/hours arithmetic in Google Spreadsheet?
...elforum.com/excel-general/471757-calculating-time-difference-over-midnight.html
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Example images for code and mark-up Q&As [closed]
...s bar.
Alternately:
Use the browser 'show source' and copy it from the HTML.
For those with enough rep. (100+, to edit a community Wiki answer), go to edit the answer and pull the URL from the text.
Code
Below is a Java class which splits up the chess piece sprite sheet, suitable for pasting ...
What is the meaning of symbol $ in jQuery?
...eady (similar to
body.onload() but better).
You can pass it a string of HTML to turn
into a DOM element which you can
then inject into the document.
You can pass it a DOM element or
elements that you want to wrap with
the jQuery object.
Here is the documentation: https://api.jquery.com/jQuer...
HttpWebRequest using Basic authentication
...n, see http://greenbytes.de/tech/webdav/draft-reschke-basicauth-enc-latest.html
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Regex to match only letters
...a letter followed by accent marks. As per regular-expressions.info/unicode.html
– ZoFreX
Sep 16 '16 at 13:42
with pyth...