大约有 40,000 项符合查询结果（耗时：0.0566秒） [XML]
What's the difference between equal?, eql?, ===, and ==?
...
You might be familiar with === as an equality operator in Javascript and PHP, but this just not an equality operator in Ruby and has fundamentally different semantics.
So what does === do?
=== is the pattern matching operator!
=== matches regular expressions
=== checks range membership
=== che...
setuptools: package data folder location
...or example, if I have a project layout like so:
project/
foo/
__init__.py
data/
resource1/
foo.txt
You can add a function to __init__.py to locate an absolute path to a data
file:
import os
_ROOT = os.path.abspath(os.path.dirname(__file__))
def g...
Override setter with arc
...piles down to (ARMv7):
.align 2
.code 16
.thumb_func "-[Article setImageURLString:]"
"-[Article setImageURLString:]":
push {r7, lr}
movw r1, :lower16:(_OBJC_IVAR_$_Article._imageURLString-(LPC7_0+4))
mov r7, sp
movt r1, :up...
How to print a query string with parameter values when using Hibernate
...ogger.org.hibernate.type=trace
The first is equivalent to hibernate.show_sql=true legacy property, the second prints the bound parameters among other things.
Another solution (non hibernate based) would be to use a JDBC proxy driver like P6Spy.
...
SqlAlchemy - Filtering by Relationship Attribute
...tient.query.join(Patient.mother, aliased=True)\
.filter_by(phenoscore=10)
share
|
improve this answer
|
follow
|
...
GCC dump preprocessor defines
...o dump its preprocessor defines from the command line?
I mean things like __GNUC__ , __STDC__ , and so on.
6 Answers
...
html select option separator
...on>First</option>
</optgroup>
<optgroup label="_________">
<option>Second</option>
<option>Third</option>
</optgroup>
</select>
disabled option (a bit better):
<select>
<option>Fir...
Multiple linear regression in Python
...
sklearn.linear_model.LinearRegression will do it:
from sklearn import linear_model
clf = linear_model.LinearRegression()
clf.fit([[getattr(t, 'x%d' % i) for i in range(1, 8)] for t in texts],
[t.y for t in texts])
Then clf.coef_...
How to get datetime in JavaScript?
...
function pad_2(number)
{
return (number < 10 ? '0' : '') + number;
}
function hours(date)
{
var hours = date.getHours();
if(hours > 12)
return hours - 12; // Substract 12 hours when 13:00 and more
return h...
Traverse a list in reverse order in Python
...
You can do:
for item in my_list[::-1]:
print item
(Or whatever you want to do in the for loop.)
The [::-1] slice reverses the list in the for loop (but won't actually modify your list "permanently").
...