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Using parameters in batch files at Windows command line
...ow to access the parameters.
Checking if a parameter was passed
This is done with constructs like IF "%~1"=="", which is true if and only if no arguments were passed at all. Note the tilde character which causes any surrounding quotes to be removed from the value of %1; without a tilde you will ge...
Handling click events on a drawable within an EditText
...w OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
final int DRAWABLE_LEFT = 0;
final int DRAWABLE_TOP = 1;
final int DRAWABLE_RIGHT = 2;
final int DRAWABLE_BOTTOM = 3;
if(event.getAction() == MotionEvent.ACTION_UP) {
...
Fast and responsive interactive charts/graphs: SVG, Canvas, other?
...edrawing individual circles while zooming. You could probably even combine one or more of these techniques with CSS3 transforms to add some hardware acceleration (as in the hierarchical edge bundling example), although that can be tricky to implement and may introduce visual artifacts.
Still, my pe...
Should methods that throw RuntimeException indicate it in method signature?
...led.
Declaring it in the javadoc is a better approach since it allows someone to handle it if they think it is necessary, but knowing they can ignore it if they want. This makes the separation between checked and unchecked clear.
...
How to store Node.js deployment settings/configuration files?
...uld be to have a settings.py file containing the standard settings (timezone, etc), and then a local_settings.py for deployment specific settings, ie. what database to talk to, what memcache socket, e-mail address for the admins and so on.
...
How to avoid overflow in expr. A * B - C * D
...
This seems too trivial I guess.
But A*B is the one that could overflow.
You could do the following, without losing precision
A*B - C*D = A(D+E) - (A+F)D
= AD + AE - AD - DF
= AE - DF
^smaller quantities E & F
E = B - D (hence, far s...
How do I loop through or enumerate a JavaScript object?
...
For..in is ugly, error-prone and deprecated (developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…). Use Object.keys() unless you have to support archeologists using IE8 or below.
– Michael Bushe
Feb 25...
iPhone: How to switch tabs with an animation?
...
Update 04/2016: Justed wanted to update this to say thank you to everyone for all the votes. Please also note that this was originally written way back when ... before ARC, before constraints, before ... a lot of stuff! So please take this into account when deciding whether to use these techniq...
How to list commits since certain commit?
... I get a huge, huge list of SHAs... even for a commit that's just one back (one leg of a merge). What is it telling me and how is that useful?
– ErikE
Feb 26 '17 at 1:30
...
Exposing a port on a live Docker container
... -A DOCKER -p tcp --dport 8001 -j DNAT --to-destination 172.17.0.19:8000
One way you can work this out is to setup another container with the port mapping you want, and compare the output of the iptables-save command (though, I had to remove some of the other options that force traffic to go via t...