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How do I create a slug in Django?
...ify("b b b b")
u'b-b-b-b'
>>>
You can call slugify automatically by overriding the save method:
class Test(models.Model):
q = models.CharField(max_length=30)
s = models.SlugField()
def save(self, *args, **kwargs):
self.s = slugify(self.q)
super(Test, self)....
The difference between the Runnable and Callable interfaces in Java
...both are designed
for classes whose instances are
potentially executed by another
thread. A Runnable, however, does not
return a result and cannot throw a
checked exception.
share
|
impro...
How can I get the ID of an element using jQuery?
...s a JQuery selector and returns an array() of results not a single element by its default functionality
an alternative for DOM selector in jquery is
$('#test').prop('id')
which is different from .attr() and $('#test').prop('foo') grabs the specified DOM foo property, while $('#test').attr('foo'...
Why are C# 3.0 object initializer constructor parentheses optional?
...s no problems for the sort of "partial program" analysis that is performed by the IDE's "IntelliSense" engine while you are typing. And so on.
the feature hits a common "sweet spot" for the larger object initialization feature; typically if you are using an object initializer it is precisely becaus...
How to get the name of enumeration value in Swift?
...ode 7 beta 5 (Swift version 2) you can now print type names and enum cases by default using print(_:), or convert to String using String's init(_:) initializer or string interpolation syntax. So for your example:
enum City: Int {
case Melbourne = 1, Chelyabinsk, Bursa
}
let city = City.Melbourn...
Change values while iterating
...ied, making the original value untouchable.
This behavior is demonstrated by the following code:
x := make([]int, 3)
x[0], x[1], x[2] = 1, 2, 3
for i, val := range x {
println(&x[i], "vs.", &val)
}
The code prints you completely different memory locations for the value from range a...
TypeScript sorting an array
...ould like to add that if you have an array of objects and you wish to sort by key then its almost the same, this is an example of one that can sort by both date(number) or title(string):
if (sortBy === 'date') {
return n1.date - n2.date
} else {
if (n1.title > n2.title) {...
How do I execute inserts and updates in an Alembic upgrade script?
...e following example:
from alembic import op
# revision identifiers, used by Alembic.
revision = '1ce7873ac4ced2'
down_revision = '1cea0ac4ced2'
branch_labels = None
depends_on = None
def upgrade():
# ### commands made by andrew ###
op.execute('UPDATE STOCK SET IN_STOCK = -1 WHERE IN_STOC...
apc vs eaccelerator vs xcache
...
APC definitely. It's written by the PHP guys, so even though it might not share the highest speeds, you can bet on the fact it's the highest quality.
Plus you get some other nifty features I use all the time (http://www.php.net/apc).
...
Empty set literal?
...types.html#set-types-set-frozenset says "non-empty sets ... can be created by placing a comma-separated list of elements within braces"
– S.Lott
May 25 '11 at 20:32
...