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Useful example of a shutdown hook in Java?
...ile boolean keepRunning = true;
In run() you change to
for (int i = 0; i < N && keepRunning; ++i)
writeBatch(pw, i);
In main() you add:
final Thread mainThread = Thread.currentThread();
Runtime.getRuntime().addShutdownHook(new Thread() {
public void run() {
keepRunning ...
SQLAlchemy: print the actual query
...ata(), Column('x', MyFancyType()))
print(
tab.select().where(tab.c.x > 5).compile(
compile_kwargs={"literal_binds": True})
)
producing output like:
SELECT mytable.x
FROM mytable
WHERE mytable.x > my_fancy_formatting(5)
...
How to detect if a function is called as constructor?
...nction x(y) {
var isConstructor = false;
if (this instanceof x // <- You could use arguments.callee instead of x here,
// except in in EcmaScript 5 strict mode.
&& !this.__previouslyConstructedByX) {
isConstructor = true;
this....
convert pfx format to p12
...FX to P12. First import the certificate into the Firefox browser (Options > Privacy & Security > View Certificates... > Import...). Once installed, perform the export to create the P12 file by choosing the certificate name from the Certificate Manager and then click Backup... and enter ...
Should I use multiplication or division?
...4234.234 * 0.5 end'
real 0m7.997s
user 0m7.516s
sys 0m0.036s
=> no real difference
LuaJIT:
time luajit -O -e 'for i=1,1e8 do t=12341234234.234 / 2.0 end'
real 0m1.921s
user 0m1.668s
sys 0m0.004s
time luajit -O -e 'for i=1,1e8 do t=12341234234.234 * 0.5 end'
real 0m1.84...
What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN? [duplicate]
...cause SQL joins are NOT the intersection of two sets- the join can be one->one, one->many, or many->many. So it's actually impossible to represent with a Venn diagram: all this diagram does is show you "what portion of the table will be involved in the join." In which case select a.* from a...
BackgroundWorker vs background Thread
...he difference with great excellence, but I would add that it's more difficult to comprehend exactly what the code is doing, and this can make debugging harder. It's easier to think about creating and shutting down threads, IMO, than it is to think about giving work to a pool of threads.
I still ca...
How to create a colored 1x1 UIImage on the iPhone dynamically?
...s:
Swift
extension UIImage {
class func image(with color: UIColor) -> UIImage {
let rect = CGRectMake(0.0, 0.0, 1.0, 1.0)
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()
CGContextSetFillColorWithColor(context, color.CGColor...
Copying text with color from Notepad++
...happy that this exists, though it would be even nicer if the default Edit > Copy command provided RTF as a default for MS Word, Outlook etc.
– Jonathan Watmough
Sep 26 '16 at 14:16
...
What port is a given program using? [closed]
...d then use tasklist to lookup which process has the corresponding id.
C:\>netstat -ano
Active Connections
Proto Local Address Foreign Address State PID
...
TCP [::]:49335 [::]:0 LISTENING 1056
...
C:\>tasklist /fi "pid...