大约有 47,000 项符合查询结果（耗时：0.0624秒） [XML]
Correct way to quit a Qt program?
...CoreApplication::quit() it "tells the application to exit with return code 0 (success).". If you want to exit because you discovered file corruption then you may not want to exit with return code zero which means success, so you should call QCoreApplication::exit() because you can provide a non-zero...
Printing tuple with string formatting in Python
...
205
>>> thetuple = (1, 2, 3)
>>> print "this is a tuple: %s" % (thetuple,)
this i...
Can't connect to local MySQL server through socket '/tmp/mysql.sock
...
PratyayPratyay
1,90611 gold badge1313 silver badges1414 bronze badges
...
What's a standard way to do a no-op in python?
...
Use pass for no-op:
if x == 0:
pass
else:
print "x not equal 0"
And here's another example:
def f():
pass
Or:
class c:
pass
share
|
impr...
Converting between datetime, Timestamp and datetime64
... np
>>> dt = datetime.utcnow()
>>> dt
datetime.datetime(2012, 12, 4, 19, 51, 25, 362455)
>>> dt64 = np.datetime64(dt)
>>> ts = (dt64 - np.datetime64('1970-01-01T00:00:00Z')) / np.timedelta64(1, 's')
>>> ts
1354650685.3624549
>>> datetime.utcfromt...
Add a new element to an array without specifying the index in Bash
...
|
edited Dec 23 '09 at 9:18
answered Dec 23 '09 at 9:02
...
onTouchListener warning: onTouch should call View#performClick when a click is detected
...
SeckoSecko
6,72044 gold badges2727 silver badges3535 bronze badges
...
Depend on a branch or tag using a git URL in a package.json?
...
580
From the npm docs:
git://github.com/<user>/<project>.git#<branch>
git://gith...
Understanding scala enumerations
...
150
the Enumeration trait has a type member Value representing the individual elements of the enumer...
Create Pandas DataFrame from a string
...that to the pandas.read_csv function. E.g:
import sys
if sys.version_info[0] < 3:
from StringIO import StringIO
else:
from io import StringIO
import pandas as pd
TESTDATA = StringIO("""col1;col2;col3
1;4.4;99
2;4.5;200
3;4.7;65
4;3.2;140
""")
df = pd.read_csv(TEST...