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What's up with Java's “%n” in printf?
...mode on a dos/windows system then when you write \n the file handling code converts it to \r\n. So by opening a file in text mode and using \n you get the platform specific line ending.
I can see why the designers of java didn't want to replicate C's hacky ideas regarding "text" and "binary" file ...
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
...
MySQL: selecting rows where a column is null
...
I had the same issue when converting databases from Access to MySQL (using vb.net to communicate with the database).
I needed to assess if a field (field type varchar(1)) was null.
This statement worked for my scenario:
SELECT * FROM [table name] W...
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...
Parse query string into an array
...
If you're having a problem converting a query string to an array because of encoded ampersands
&
then be sure to use html_entity_decode
Example:
// Input string //
$input = 'pg_id=2&parent_id=2&document&video';...
Easily measure elapsed time
I am trying to use time() to measure various points of my program.
26 Answers
26
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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...
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 :
...