大约有 48,000 项符合查询结果（耗时：0.0462秒） [XML]
Combine two ActiveRecord::Relation objects
...
If you want to combine using AND (intersection), use merge:
first_name_relation.merge(last_name_relation)
If you want to combine using OR (union), use or†:
first_name_relation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
...
Adding days to a date in Python
...to do:
import datetime
Then you'll have, using datetime.timedelta:
date_1 = datetime.datetime.strptime(start_date, "%m/%d/%y")
end_date = date_1 + datetime.timedelta(days=10)
share
|
improve t...
Align contents inside a div
...
You can do it like this also:
HTML
<body>
<div id="wrapper_1">
<div id="container_1"></div>
</div>
</body>
CSS
body { width: 100%; margin: 0; padding: 0; overflow: hidden; }
#wrapper_1 { clear: left; float: left; position: relative; left: 5...
How do I find out my python path using python?
...ent variable. To query the variable directly, use:
import os
try:
user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
except KeyError:
user_paths = []
share
|
improve this answer
...
mingw-w64 threads: posix vs win32
...helps someone else: The package g++-mingw-w64-x86-64 provides two files x86_64-w64-mingw32-g++-win32 and x86_64-w64-mingw32-g++-posix, and x86_64-w64-mingw32-g++ is aliased to one of them; see update-alternatives --display x86_64-w64-mingw32-g++.
– stewbasic
Fe...
How can I specify working directory for popen
...wd, import os and define cwd using this:
os.path.dirname(os.path.realpath(__file__))
share
|
improve this answer
|
follow
|
...
Hibernate show real SQL [duplicate]
...logger.org.hibernate.type=TRACE
The first is equivalent to hibernate.show_sql=true, the second prints the bound parameters among other things.
Reference
Hibernate 3.5 Core Documentation
3.5. Logging
Hibernate 4.1 Core Documentation
4.1. Logging
...
Using pickle.dump - TypeError: must be str, not bytes
..., that's why you are here.
import pickle
class MyUser(object):
def __init__(self,name):
self.name = name
user = MyUser('Peter')
print("Before serialization: ")
print(user.name)
print("------------")
serialized = pickle.dumps(user)
filename = 'serialized.native'
with open(filename,...
How can we run a test method with multiple parameters in MSTest?
...s
.Cast<KeyValuePair<string, object>>()
.Where(_ => _.Key.StartsWith("par"))
.Select(_ => _.Value as string)
.ToList();
}
//usage
[TestMethod]
[TestProperty("par1", "http://getbootstrap.com/components/")]
[TestProperty("par2", "http://www.wsj.com/eu...
What is the difference between range and xrange functions in Python 2.X?
...
xrange(x).__iter__() is a generator.
– augustomen
Aug 13 '13 at 14:28
36
...