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Greedy vs. Reluctant vs. Possessive Quantifiers
...leaving the "foo" at the end of the string unmatched). Now, the matcher finally matches the f in the regex, and the o and the next o are matched too. Success!
A reluctant or "non-greedy" quantifier first matches as little as possible. So the .* matches nothing at first, leaving the entire string un...
Django Passing Custom Form Parameters to Formset
...m functools import partial, wraps
from django.forms.formsets import formset_factory
ServiceFormSet = formset_factory(wraps(ServiceForm)(partial(ServiceForm, affiliate=request.affiliate)), extra=3)
I think this is the cleanest approach, and doesn't affect ServiceForm in any way (i.e. by making it ...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
... to create a field in the class.
PRE Django 1.7
Django lets you pass a callable as the default, and it will invoke it each time, just as you want:
from datetime import datetime, timedelta
class MyModel(models.Model):
# default to 1 day from now
my_date = models.DateTimeField(default=lambda: ...
Spring Data JPA find by embedded object property
...
According to me, Spring doesn't handle all the cases with ease. In your case
the following should do the trick
Page<QueuedBook> findByBookIdRegion(Region region, Pageable pageable);
or
Page<QueuedBook> findByBookId_Region(Region region, Pageable ...
How to have the cp command create any necessary folders for copying a file to a destination [duplica
... the mkdir/cp command above. It just creates a single level of folder. Actually I'm not sure when it can be useful.
– Penghe Geng
Apr 13 '15 at 14:30
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Why a function checking if a string is empty always returns true? [closed]
...
Simple problem actually. Change:
if (strTemp != '')
to
if ($strTemp != '')
Arguably you may also want to change it to:
if ($strTemp !== '')
since != '' will return true if you pass is numeric 0 and a few other cases due to PHP's autom...
How to add JTable in JPanel with null layout?
...iety of components into a frame to demonstrate how to use nested layouts. All the layouts that are explicitly set are shown as a titled-border for the panel on which they are used.
Notable aspects of the code are:
There is a combo-box to change PLAF (Pluggable Look and Feel) at run-time.
The GUI...
add a string prefix to each value in a string column using Pandas
...map :
df['col'].map('str{}'.format)
It will apply the word "str" before all your values.
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Where can I find my .emacs file for Emacs running on Windows?
I tried looking for the .emacs file for my Windows installation for Emacs, but I could not find it. Does it have the same filename under Windows as in Unix?
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Eclipse error: 'Failed to create the Java Virtual Machine'
...swered Sep 4 '11 at 22:52
Matt BallMatt Ball
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