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How do I sort an observable collection?
... return -1; // decide how to handle error case
}
usage:
Sample with an observer (used a Person class to keep it simple)
public class Person:IComparable<Person>,IEquatable<Person>
{
public string Name { get; set; }
public ...
How can I see the raw SQL queries Django is running?
...t the output of the query is not valid SQL, because:
"Django never actually interpolates the parameters: it sends the query and the parameters separately to the database adapter, which performs the appropriate operations."
From Django bug report #17741.
Because of that, you should not send qu...
What is the 'new' keyword in JavaScript?
...inherited properties and methods for the objects you make.
Here is an example:
ObjMaker = function() {this.a = 'first';};
// ObjMaker is just a function, there's nothing special about it that makes
// it a constructor.
ObjMaker.prototype.b = 'second';
// like all functions, ObjMaker has an acc...
How do you version your database schema? [closed]
...
Brazil looks pretty good, too bad I'm using mainly PHP. Ever considered porting the system?
– Eran Galperin
Jan 1 '09 at 20:26
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What is the _references.js used for?
...
In VS 11, Visual Studio will give you intellisense from all files
that have references in the “_references.js” file.
For More Info
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How to update a record using sequelize for node?
...gt;
handleError(err)
)
Update 2016-03-09
The latest version actually doesn't use success and error anymore but instead uses then-able promises.
So the upper code will look as follows:
Project.update(
{ title: 'a very different title now' },
{ where: { _id: 1 } }
)
.then(result =&g...
What must I know to use GNU Screen properly? [closed]
... \# select 13
bind $ select 14
bind % select 15
bind \^ select 16
bind & select 17
bind * select 18
bind ( select 19
bind ) select 10
That assigns ctrl+a shift+0 through 9 for windows 10 through 19.
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
...
From what I've found online, this is a bug introduced in JDK 1.7.0_45. It appears to also be present in JDK 1.7.0_60. A bug report on Oracle's website states that, while there was a fix, it was removed before the JDK was rele...
How to make inline functions in C#
...=> x + y;
void print(int x) { Console.WriteLine(x); }
There are basically two different types for these: Func and Action. Funcs return values but Actions don't. The last type parameter of a Func is the return type; all the others are the parameter types.
There are similar types with different...
Accessing the index in 'for' loops?
... an index variable (which you would normally use in languages such as C or PHP), is considered non-pythonic.
The better option is to use the built-in function enumerate(), available in both Python 2 and 3:
for idx, val in enumerate(ints):
print(idx, val)
Check out PEP 279 for more.
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