大约有 40,000 项符合查询结果（耗时：0.0313秒） [XML]
Flask-SQLAlchemy import/context issue
...ig['DEBUG'] = True
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
db = flask.ext.sqlalchemy.SQLAlchemy(app)
class Person(db.Model):
id = db.Column(db.Integer, primary_key=True)
...
class Computer(db.Model):
id = db.Column(db.Integer, primary_key=True)
...
# Create the da...
Print multiple arguments in Python
...mat() as more readable than the older % (tuple) -- even though I have seen tests that show the % interpolation is faster. The print('xxx', a, 'yyy', b) is also fine for simple cases. I recommend also to learn .format_map() with dictionary as the argument, and with 'ssss {key1} xxx {key2}' -- nice fo...
Redirect parent window from an iframe action
...frame with URL 'jsfiddle.net/ppkzS' from frame with URL 'parrisstudios.com/tests/iframe_redirect.html'. The frame attempting navigation of the top-level window is sandboxed, but the 'allow-top-navigation' flag is not set.
– Bjarte Aune Olsen
Mar 18 '15 at 9:09
...
How do I determine the size of an object in Python?
...s__ if hasattr(obj, s))
return size
return inner(obj_0)
And I tested it rather casually (I should unittest it):
>>> getsize(['a', tuple('bcd'), Foo()])
344
>>> getsize(Foo())
16
>>> getsize(tuple('bcd'))
194
>>> getsize(['a', tuple('bcd'), Foo(), {'fo...
How do you set a default value for a MySQL Datetime column?
...ith DATETIME...
But you can do it with TIMESTAMP:
mysql> create table test (str varchar(32), ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP);
Query OK, 0 rows affected (0.00 sec)
mysql> desc test;
+-------+-------------+------+-----+-------------------+-------+
| Field | Type | Null | Key | ...
How to check for DLL dependency?
...ially done in C#, meet "Dependencies.exe": github.com/lucasg/Dependencies. Test impression: a bit beta-ish, but it handles API-sets and SxS apparently (missing from Dependency Walker).
– Stein Åsmul
Dec 14 '17 at 12:15
...
How to output a multiline string in Bash?
...gnore leading tabs (but not leading spaces). For example this:
if [ some test ]; then
cat <<- xx
line1
line2
xx
fi
Outputs indented text without the leading whitespace:
line1
line2
share
...
Why does the MongoDB Java driver use a random number generator in a conditional?
...zed to negative 1:
private int logit = -1;
In the try block, make the test:
if( !ok && (logit = (logit + 1 ) % 10) == 0 ) { //log error
This always logs the first error, then every tenth subsequent error. Logical operators "short-circuit", so logit only gets incremented on an actua...
How to use permission_required decorators on django class-based views
...
Mentioned here in latest docs docs.djangoproject.com/en/dev/topics/class-based-views/intro
– Bharathwaaj
May 26 '13 at 6:38
...
C++ multiline string literal
...er 2012 CTP [microsoft.com/en-us/download/details.aspx?id=35515] for the latest bleeding edge.
– emsr
Jan 31 '13 at 1:17
5
...