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Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...e this data gets dumped? Is it just to the console, or to some log file? If it's just to the console, what if I'm not logged into the Unix server through the console?
...
Why is printing “B” dramatically slower than printing “#”?
...hose lessons stick with you, they get burned in to your lizard brain. But if you leaned to code after that, when your environment word wraps everything, or you do it manually prior to runtime, it is harder to run into the issues with word wrap.
– JockM
Feb 23 ...
Drop multiple tables in one shot in mysql
...nd C. Then we can use the following syntax to drop all tables.
DROP TABLE IF EXISTS B,C,A;
This can be placed in the beginning of the script instead of individually dropping each table.
share
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i...
Match multiple cases classes in scala
...> "A"
case B(_) | C(_) => "B"
case _ => "default"
}
}
If you must, must, must extract the parameter and treat them in the same code block, you could:
def matcher(l: Foo): String = {
l match {
case A() => "A"
case bOrC @ (B(_) | C(_)) => {
val s = bOrC.asIn...
Mismatched anonymous define() module
...
Like AlienWebguy said, per the docs, require.js can blow up if
You have an anonymous define ("modules that call define() with no string ID") in its own script tag (I assume actually they mean anywhere in global scope)
You have modules that have conflicting names
You use loader plugi...
Comments in .gitignore?
...
Don't know if it was true when this was answered, but the linked book section indicates that in addition to starting a line, comments can also be appended to a line in the .gitignore file.
– Stuart R. Jefferys
...
Entity Framework - Start Over - Undo/Rollback All Migrations
...ny migration by using:
Update-Database -TargetMigration:"MigrationName"
If you want to rollback all migrations you can use:
Update-Database -TargetMigration:0
or equivalent:
Update-Database -TargetMigration:$InitialDatabase
In some cases you can also delete database and all migration class...
Is there a foreach loop in Go?
...e we are
// element is the element from someSlice for where we are
}
If you don't care about the index, you can use _:
for _, element := range someSlice {
// element is the element from someSlice for where we are
}
The underscore, _, is the blank identifier, an anonymous placeholder.
...
Best way to change the background color for an NSView
...Fill];
NSRectFill(dirtyRect);
[super drawRect:dirtyRect];
}
In Swift:
class MyView: NSView {
override func draw(_ dirtyRect: NSRect) {
super.draw(dirtyRect)
// #1d161d
NSColor(red: 0x1d/255, green: 0x16/255, blue: 0x1d/255, alpha: 1).setFill()
dirtyRe...
Performance differences between debug and release builds
...frame. This is a big one, notable for making debugging optimized code so difficult. And giving the volatile keyword a meaning.
Array index checking elimination. An important optimization when working with arrays (all .NET collection classes use an array internally). When the JIT compiler can ver...