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Does Java casting introduce overhead? Why?
...pe to a wider type, which is done automatically and there is no overhead:
String s = "Cast";
Object o = s; // implicit casting
Explicit casting, when you go from a wider type to a more narrow one. For this case, you must explicitly use casting like that:
Object o = someObject;
String s = (String...
How can you integrate a custom file browser/uploader with CKEditor?
...ard alert dialog, such as "illegal file" or something. Set url to an empty string if the third parameter is an error message.
CKEditor's "upload" tab will submit a file in the field "upload" - in PHP, that goes to $_FILES['upload']. What CKEditor wants your server to output is a complete JavaScript...
How to take screenshot of a div with JavaScript?
...or a shot within given cords and return the BASE64 encoded data of it as a string no Security problem
– Barkermn01
Dec 27 '12 at 19:56
...
How to send a JSON object using html form data
...
Get complete form data as array and json stringify it.
var formData = JSON.stringify($("#myForm").serializeArray());
You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If this data is passed as json string vi...
Query grants for a table in postgres
... really want one line per user, you can group by grantee (require PG9+ for string_agg)
SELECT grantee, string_agg(privilege_type, ', ') AS privileges
FROM information_schema.role_table_grants
WHERE table_name='mytable'
GROUP BY grantee;
This should output something like :
grantee | privil...
Complex nesting of partials and templates
...ject to address this problem
For subsections it's as easy as leveraging strings in ng-include:
<ul id="subNav">
<li><a ng-click="subPage='section1/subpage1.htm'">Sub Page 1</a></li>
<li><a ng-click="subPage='section1/subpage2.htm'">Sub Page 2</a&g...
python max function using 'key' and lambda expression
...ms based on a set of rules based on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a particular attribute/index, you've to use the key argument.
Example 1:
A simple example, suppose you have a list ...
Check if item is in an array / list
If I've got an array of strings, can I check to see if a string is in the array without doing a for loop? Specifically, I'm looking for a way to do it within an if statement, so something like this:
...
C# constructor execution order
...;
public A()
{
Console.WriteLine("A");
}
public A(string x) : this()
{
Console.WriteLine("A got " + x);
}
}
public class B : A
{
public readonly C bc = new C("B");
public B(): base()
{
Console.WriteLine("B");
}
public B(string x)...
Using an RDBMS as event sourcing storage
... CorrelationId and CausationId. Used to figure out what caused events, and string them together if need be.
– Daniel Park
Feb 20 at 23:22
...