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window.onload vs
...l of the common JavaScript libraries, Prototype, ExtJS, Dojo, JQuery, YUI, etc. provide nice wrappers around events that occur as the document is loaded. You can listen for the window onLoad event, and react to that, but onLoad is not fired until all resources have been downloaded, so your event han...
Making a private method public to unit test it…good idea?
...stacks to the test, you could test that the class returns the pages in the order you expect it to after calling first() or last().
For example, consider this pseudo-code:
public class NavigationTest {
private Navigation nav;
@Before
public void setUp() {
// Set up nav so the ...
How to get the instance id from within an ec2 instance?
...dvanced use (retrieve instance ID as well as availability zone and region, etc.):
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
test -n "$EC2_INSTANCE_ID" || die 'cannot obtain instance-id'
EC2_AVAIL_ZONE="`wget -q -O...
pyplot scatter plot marker size
...lt is rcParams['lines.markersize'] ** 2.
This can be taken literally. In order to obtain a marker which is x points large, you need to square that number and give it to the s argument.
So the relationship between the markersize of a line plot and the scatter size argument is the square. In order...
Node.js check if file exists
...
A easier way to do this synchronously.
if (fs.existsSync('/etc/file')) {
console.log('Found file');
}
The API doc says how existsSync work:
Test whether or not the given path exists by checking with the file system.
...
What does __FILE__ mean in Ruby?
...LE__ is the full path (which in my opinion is preferable). This is why, in order to make your paths portable in Ruby, you really need to use this:
File.expand_path(File.dirname(__FILE__) + "relative/path/to/file")
I should note that in Ruby 1.9.1 __FILE__ contains the full path to the file, the a...
Simulator or Emulator? What is the difference?
...hat can provide accelerated CPU support, exclusive hardware device access, etc.
– Lee B
Oct 18 '09 at 13:30
Wait, does...
In Bash, how to add “Are you sure [Y/n]” to any command or alias?
...want to continue? <y/N> " prompt
if [[ $prompt =~ [yY](es)* ]]
then
(etc...)
That tests whether the user input starts with 'y' or 'Y' and is followed by zero or more 'es's.
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How can I make a .NET Windows Forms application that only runs in the System Tray?
... only difference is that it creates a icon in windows system tray area. In order to create sys.tray icon use NotifyIcon component , you can find it in Toolbox(Common controls), and modify it's properties: Icon, tool tip. Also it enables you to handle mouse click and double click messages.
And One m...
How to effectively work with multiple files in Vim
...ms to store the complete state of things (window splits, buffer locations, etc). So, thanks!
– Kasapo
Jun 15 '16 at 19:42
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