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What is the difference between 'my' and 'our' in Perl?
... The variables differ with respect to newness.
$o ++;
$m ++;
print __PACKAGE__, " >> o=$o m=$m\n"; # $m is always 1.
# The package has changed, but we still have direct,
# unqualified access to both variables, because the
# lexical scope has not changed.
package F...
Repository Pattern Step by Step Explanation [closed]
...ng provider, settled on Azure (before they supported Oracle), so we had to convert to SQL Azure. Unfortunately, we had not separated all data access logic at that point, but we certainly did it as we did that migration (and going forward, I might add).
– Joe
No...
How do I get hour and minutes from NSDate?
...
Use an NSDateFormatter to convert string1 into an NSDate, then get the required NSDateComponents:
Obj-C:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"<your date format goes here"];
NSDate *date =...
How add “or” in switch statements?
...ase enter your selection: ");
string s = Console.ReadLine();
int n = int.Parse(s);
int cost = 0;
switch(n)
{
case 1:
cost += 25;
break;
case 2:
cost += 25;
...
In Gradle, how do I declare common dependencies in a single place?
... Although convenient, this plugin may have significant performance footprint. For 30 subprojects with 200+ dependencies it adds up to 1 minute to dependency resolution phase. For small projects it works like a charm, though
– Jk1
Jun 6 '15 at 23:33
...
Sell me on const correctness
...ause...
It protects you from accidentally changing variables that aren't intended be changed,
It protects you from making accidental variable assignments, and
The compiler can optimize it. For instance, you are protected from
if( x = y ) // whoops, meant if( x == y )
At the same time, the c...
Good examples of Not a Functor/Functor/Applicative/Monad?
...
A type constructor which is not a Functor:
newtype T a = T (a -> Int)
You can make a contravariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed:
fmap :: Functor f => (a -> b...
MAMP Pro 3.05 on Mavericks updated to Yosemite - Apache does not start
...t that contained quotes. By default, Yosemite keyboard settings are set to convert straight quotes to smart quotes ("no-cache" became “no-cache”. Depending on font and font size, this may not be immediately obvious). This made Apache crash, even when the host was disabled.
To change this settin...
Easily measure elapsed time
I am trying to use time() to measure various points of my program.
26 Answers
26
...
Regular expression to match URLs in Java
...egexBuddy. However, when I copied it as Java String flavor and pasted it into Java code, it does not work. The following class prints false :
...