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Intersection and union of ArrayLists in Java
...ethods don't modify the original lists input to the methods.
public class Test {
public static void main(String... args) throws Exception {
List<String> list1 = new ArrayList<String>(Arrays.asList("A", "B", "C"));
List<String> list2 = new ArrayList<String&...
What is a stored procedure?
...stored procedure.
Sample of creating a stored procedure
CREATE PROCEDURE test_display
AS
SELECT FirstName, LastName
FROM tb_test;
EXEC test_display;
Advantages of using stored procedures
A stored procedure allows modular programming.
You can create the procedure once, store it in the...
Do rails rake tasks provide access to ActiveRecord models?
...
Figured it out, the task should look like:
namespace :test do
task :new_task => :environment do
puts Parent.all.inspect
end
end
Notice the => :environment dependency added to the task
sh...
How do I raise the same Exception with a custom message in Python?
... where we raise our exception.
Traceback (most recent call last):
File "test.py", line 2, in <module>
1 / 0
ZeroDivisionError: division by zero
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "test.py", line 4, in <modu...
How to replace a hash key with another key
... key in hash then we can do it as follows:
Suppose my hash is my_hash = {'test' => 'ruby hash demo'}
Now I want to replace 'test' by 'message', then:
my_hash['message'] = my_hash.delete('test')
share
|
...
How to get current time and date in Android
...f in a loop you do
Time time = new Time(); time.setToNow();
Log.d("TIME TEST", Long.toString(time.toMillis(false)));
... do something that takes more than one millisecond, but less than one second ...
The resulting sequence will repeat the same value, such as 1410543204000, until the next secon...
Text border using css (border around text)
...px #fff, -1px -1px 0 #fff, 1px -1px 0 #fff, -1px 1px 0 #fff;
}
<h1>test</h1>
Alternatively, you could use text stroke, which only works in webkit:
-webkit-text-stroke-width: 2px;
-webkit-text-stroke-color: #fff;
body {
font-family: sans-serif;
background: #222;
...
How can I pretty-print JSON using node.js?
...your filesystem with fs. Example:
var fs = require('fs');
fs.writeFile('test.json', JSON.stringify({ a:1, b:2, c:3 }, null, 4));
/* test.json:
{
"a": 1,
"b": 2,
"c": 3,
}
*/
See the JSON.stringify() docs at MDN, Node fs docs
...
iPhone Debugging: How to resolve 'failed to get the task for process'?
... figure out.
If you are using a distribution / ad hoc/ profile you cannot test it through xcode. You will get the error: The program being debugged is not being run.
You can build the app, go to the products folder in your app in xcode, click on the file with your project name and choose reveal i...
How can I create an object and add attributes to it?
...
This seems a better solution to me than unittest.mock; the latter is a bit too heavy-weight and a bit more malleable. With a mock object, simply assigning to an attribute will cause it to spring into existence; SimpleNamespace will resist that.
– ...