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Is the primary key automatically indexed in MySQL?
...
I guess this is the answer
mysql> create table test(id int primary key, s varchar(20));
Query OK, 0 rows affected (0.06 sec)
mysql> show indexes from test \G
*************************** 1. row ***************************
Table: test
Non_unique: 0
Key_name: ...
Check if a string has white space
... couldn't you put in s.indexOf(/^\s+$/) as well?
– Zoidberg
Nov 13 '09 at 19:08
2
this is not sup...
chart.js load totally new data
...is is my <canvas> element
$('#graph-container').append('<canvas id="results-graph"><canvas>');
canvas = document.querySelector('#results-graph'); // why use jQuery?
ctx = canvas.getContext('2d');
ctx.canvas.width = $('#graph').width(); // resize to parent width
ctx.canvas...
How do I create a list of random numbers without duplicates?
...ur specific code example, you probably want to read all the lines from the file once and then select random lines from the saved list in memory. For example:
all_lines = f1.readlines()
for i in range(50):
lines = random.sample(all_lines, 40)
This way, you only need to actually read from the f...
How to run Django's test database only in memory?
...
I usually create a separate settings file for tests and use it in test command e.g.
python manage.py test --settings=mysite.test_settings myapp
It has two benefits:
You don't have to check for test or any such magic word in sys.argv, test_settings.py can si...
Get MIME type from filename extension
How can I get the MIME type from a file extension?
24 Answers
24
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How Pony (ORM) does its tricks?
...ted in the first step, so let me explain how decompiling works.
Let's consider this query:
>>> from pony.orm.examples.estore import *
>>> select(c for c in Customer if c.country == 'USA').show()
Which will be translated into the following SQL:
SELECT "c"."id", "c"."email", "c"...
Best way to make Django's login_required the default
...w function. You can also put the login_required() decorator in the urls.py file.
While this is still a manual task, at least you have it all in one place, which makes it easier to audit.
e.g.,
from my_views import home_view
urlpatterns = patterns('',
# "Home":
(r'^$', log...
Can I delete a git commit but keep the changes?
...oft moves your HEAD to point to the specified commit, without changing any files. HEAD^ refers to the (first) parent commit of your current commit, which in your case is the commit before the temporary one.
Note that another option is to carry on as normal, and then at the next commit point instead...
How to prevent line-break in a column of a table cell (not a single cell)?
...answered Dec 12 '09 at 15:31
David MDavid M
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