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Collisions when generating UUIDs in JavaScript?
This relates to this question . I am using the code below from this answer to generate UUID in JavaScript:
6 Answers
...
Create an empty list in python with certain size
...uld still fail, as our list has only 10 elements.
range(x) creates a list from [0, 1, 2, ... x-1]
# 2.X only. Use list(range(10)) in 3.X.
>>> l = range(10)
>>> l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Using a function to create a list:
>>> def display():
... s1 = []
... ...
How to drop rows of Pandas DataFrame whose value in a certain column is NaN
...e missing data, including dropna(), is built into pandas explicitly. Aside from potentially improved performance over doing it manually, these functions also come with a variety of options which may be useful.
In [24]: df = pd.DataFrame(np.random.randn(10,3))
In [25]: df.iloc[::2,0] = np.nan; df....
Computed read-only property vs function in Swift
...when actual work is being done. Maybe something has to be computed or read from disk or from a database: In this case I use a function, even when only a simple value is returned. That way I can easily see whether a call is cheap (properties) or possibly expensive (functions).
We will probably get ...
AngularJS- Login and Authentication in each route and controller
...sLoggedIn : function(){
return(user)? user : false;
}
}
})
From your app.run, you should listen the $routeChangeStart event. When the route will change, it will check if the user is logged (the isLoggedIn method should handle it). It won't load the requested route if the user is not ...
How to convert List to int[] in Java? [duplicate]
...rticular:
List<T>.toArray won't work because there's no conversion from Integer to int
You can't use int as a type argument for generics, so it would have to be an int-specific method (or one which used reflection to do nasty trickery).
I believe there are libraries which have autogenerate...
How do I clone a Django model instance object and save it to the database?
...objects one by one. If you don't want the call to the database, just do:
from copy import deepcopy
new_instance = deepcopy(object_you_want_copied)
new_instance.id = None
new_instance.save()
It does the same thing as some of these other answers, but it doesn't make the database call to retrieve ...
Switch on Enum in Java [duplicate]
...
You definitely can switch on enums. An example posted from the Java tutorials.
public enum Day {
SUNDAY, MONDAY, TUESDAY, WEDNESDAY,
THURSDAY, FRIDAY, SATURDAY
}
public class EnumTest {
Day day;
public EnumTest(Day day) {
this.day = day;
}
p...
The most accurate way to check JS object's type?
...
|| (cache[key] = key.slice(8, -1).toLowerCase()); // get XXXX from [object XXXX], and cache it
};
}(this));
use as:
type(function(){}); // -> "function"
type([1, 2, 3]); // -> "array"
type(new Date()); // -> "date"
type({}); // -> "object"
...
Javascript - Track mouse position
...'t available and clientX/Y are,
// calculate pageX/Y - logic taken from jQuery.
// (This is to support old IE)
if (event.pageX == null && event.clientX != null) {
eventDoc = (event.target && event.target.ownerDocument) || document;
doc ...