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Difference between scaling horizontally and vertically for databases [closed]
...abases and SQL databases. There are varying parameters to measure the strength and weaknesses of these databases and scalability is one of them. What is the difference between horizontally and vertically scaling these databases?
...
How do you build a Singleton in Dart?
... SingletonTwo._privateConstructor();
static SingletonTwo get instance => _instance;
}
3. Static field
class SingletonThree {
SingletonThree._privateConstructor();
static final SingletonThree instance = SingletonThree._privateConstructor();
}
How to instanstiate
The above singleto...
Large Numbers in Java
...
@haylem the performance speed is the same but the length of the number makes it takes time. they use bitwise operators to do the calculations. like what happens normally when doing math with primitive types.
– ZOLDIK
Aug 20 '19 at 11:29
...
Gesture recognizer and button actions
...(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
if touch.view is UIButton {
return false
}
return true
}
Don't forget to:
Make your tapper object delegate to self (e.g: tapper.delegate = self)
...
Prevent Caching in ASP.NET MVC for specific actions using an attribute
...s(IServiceCollection services)
...
services.AddMvc(config=>
{
config.Filters.Add(
new ResponseCacheFilter(
new CacheProfile() {
NoStore=true
}));
}
...
)
I...
Iterating Through a Dictionary in Swift
... println("kind: \(kind)")
for number in numbers {
if number > largest {
largest = number
}
}
}
largest
This prints:
kind: Square
kind: Prime
kind: Fibonacci
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Rails migrations: Undo default setting for a column
...hema level:
def self.up
change_column :table, :column, :string, :null => false, :default => ""
change_column_default(:table, :column, nil)
end
share
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improve this answer
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Why would you use Oracle database? [closed]
...ce + support cost)
evolution perspectives, for example:
Oracle Express -> Oracle
SQL Server Express -> MSSQL
business perspectives - "secure, well known product" or open-source product (bear in mind the quotation around the first phrase). Other post tends to look deeper into this aspect.
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Update built-in vim on Mac OS X
...binary to your path, ahead of /usr/bin
$ echo 'PATH=/opt/local/bin:$PATH' >> ~/.bash_profile
$ # Reload bash_profile so the changes take effect in this window
$ source ~/.bash_profile
Voila! Now when we use vim we will be using the new one. But, to get back to our old configuration in the ev...
C state-machine design [closed]
...
while (state != ST_TERM) {
event = GetNextEvent();
for (i = 0; i < TRANS_COUNT; i++) {
if ((state == trans[i].st) || (ST_ANY == trans[i].st)) {
if ((event == trans[i].ev) || (EV_ANY == trans[i].ev)) {
state = (trans[i].fn)();
break;
...