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ANTLR: Is there a simple example?
...ens should now be generated.
To see if it all works properly, create this test class:
import org.antlr.runtime.*;
public class ANTLRDemo {
public static void main(String[] args) throws Exception {
ANTLRStringStream in = new ANTLRStringStream("12*(5-6)");
ExpLexer lexer = new E...
How can I enable or disable the GPS programmatically on Android?
....parse("3"));
sendBroadcast(poke);
}
}
use the following to test if the existing version of the power control widget is one which will allow you to toggle the gps.
private boolean canToggleGPS() {
PackageManager pacman = getPackageManager();
PackageInfo pacInfo = null;
t...
HTTPS setup in Amazon EC2
... answer for people who want a hassle free https on ec2 for mainly demo and testing purposes, one way they can achieve that very fast is:
With my answer here which describes How you can achieve https for testing purposes in minutes with EC2 without the hassle of creating certificates
...
How do I get the current date in JavaScript?
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The new Date.prototype.toLocaleDateString() method is a more flexible solution. It's a part of JavaScript since ECMAScript 5.1 and is well-supported by evergreen browsers. MDN: toLocaleDateString()
– Adam Brown
Feb 16 ...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...the cost is acceptable. If you want this for space-savings, you had better test, and TEST AGAIN. Testing includes all functionality, and more than just a few rows of data. Be warned that UTF-8 collations work best when ALL columns, and the database itself, are using VARCHAR data (columns, variables,...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
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If i call to validate this code myRe.test(str) and then try do execAll, it stars at second match and we lost the first match.
– fdrv
Mar 15 '16 at 4:34
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git add, commit and push commands in one?
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Yes, but you don't need to commit to test your code, either. You should write some code, test it, and then commit and push. The legendary use of local git commits to provide some sort of multi-file "undo" functionality is used far more in legend than in realit...
Circle line-segment collision detection algorithm?
...e ray,
L is the end point of the ray,
C is the center of sphere you're testing against
r is the radius of that sphere
Compute:
d = L - E ( Direction vector of ray, from start to end )
f = E - C ( Vector from center sphere to ray start )
Then the intersection is found by..
Plugging:
P = E ...
Windows service on Local Computer started and then stopped error
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You may want to unit test the initialization - but because it's in the OnStart method this is near to impossible. I would suggest moving the initialization code out into a separate class so that it can be tested or at least re-used in a form tes...
Difference between core and processor
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@Leeor I think I did the test incorrectly. it loooks like my online workspace has virtual CPUs (4) but a single processor. Thats why all of them get busy. When I performed the test on a 2 cpu physical machine (dual core), i can see that the cpu utili...