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Predicate in Java
...usage of Predicate here
Basically it is used to filter rows in the resultset based on any specific criteria that you may have and return true for those rows that are meeting your criteria:
// the age column to be between 7 and 10
AgeFilter filter = new AgeFilter(7, 10, 3);
// set the fi...
How do you find the current user in a Windows environment?
...ou can get a complete list of environment variables by running the command set from the command prompt.
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Which concurrent Queue implementation should I use in Java?
...he easiest first, ArrayBlockingQueue is a queue of a fixed size. So if you set the size at 10, and attempt to insert an 11th element, the insert statement will block until another thread removes an element. The fairness issue is what happens if multiple threads try to insert and remove at the same t...
bower command not found windows
... In my case 'C:\Users\username\AppData\Roaming\npm' was already set in environment vairables, however running the 'npm config get prefix' revealed that the path had .ssh in it (C:\Users\username\.ssh\AppData\Roaming\npm) therefore overwriting this in the environment variable fixed the pro...
What does passport.session() middleware do?
...n authentication system using Passport.js using Easy Node Authentication: Setup and Local tutorial .
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Android static object lifecycle
I am creating event search application, we set search criteria from one screen populate in another screen then user can edit search criteria from 3rd screen and goes to 4th screen.
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Are PDO prepared statements sufficient to prevent SQL injection?
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The Attack
So, let's start off by showing the attack...
$pdo->query('SET NAMES gbk');
$var = "\xbf\x27 OR 1=1 /*";
$query = 'SELECT * FROM test WHERE name = ? LIMIT 1';
$stmt = $pdo->prepare($query);
$stmt->execute(array($var));
In certain circumstances, that will return more than 1 ro...
Understanding dispatch_async
...e dispatch_async() system) - you just make your work units as code blocks, set a priority for them (based on the queue you choose) and let the system handle the rest.
So to answer your above question: you are partially correct. You are "asking that code" to perform concurrent tasks on a global conc...
How do I create a parameterized SQL query? Why Should I?
...up being used as a value, whereas with the other method if variable fuz is set to
"x'; delete from foo where 'a' = 'a"
can you see what might happen?
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How to convert Set to Array?
Set seems like a nice way to create Arrays with guaranteed unique elements, but it does not expose any good way to get properties, except for generator [Set].values, which is called in an awkward way of mySet.values.next() .
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