大约有 48,000 项符合查询结果（耗时：0.0555秒） [XML]
One-line list comprehension: if-else variants
...ssion you're returning for each element. Thus you need:
[ x if x%2 else x*100 for x in range(1, 10) ]
The confusion arises from the fact you're using a filter in the first example, but not in the second. In the second example you're only mapping each value to another, using a ternary-operator exp...
How do I convert an interval into a number of hours with postgres?
...er of epochs?
– Asmox
Oct 19 '19 at 10:49
add a comment
|
...
Can I return the 'id' field after a LINQ insert?
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\...
How Do I Hide wpf datagrid row selector
...
answered May 19 '10 at 13:05
slugsterslugster
46.4k1313 gold badges9090 silver badges135135 bronze badges
...
How to add 10 days to current time in Rails
...
Use
Time.now + 10.days
or even
10.days.from_now
Both definitely work. Are you sure you're in Rails and not just Ruby?
If you definitely are in Rails, where are you trying to run this from? Note that Active Support has to be loaded.
...
awk without printing newline
...
answered Jan 7 '10 at 16:56
CodeRainCodeRain
5,18444 gold badges2323 silver badges3232 bronze badges
...
Creating a zero-filled pandas data frame
...
Testing this I find %timeit temp = np.zeros((10, 11)); d = pd.DataFrame(temp, columns = ['col1', 'col2',...'col11']) takes 156 us. But %timeit d = pd.DataFrame(0, index = np.arange(10), columns = ['col1', 'col2',...'col11']) takes 171 us. I'm surprised it's not any fast...
Handler is abstract ,cannot be instantiated
...rting/autocompleting is one i.e. is quicker 90% of the time, is 5 x slower 10% of the time. Thanks again
– Joel Balmer
Mar 12 '14 at 22:20
1
...
How to get string width on Android?
...
answered Sep 2 '10 at 19:05
FrankFrank
3,10611 gold badge1616 silver badges1212 bronze badges
...
unable to locate nuget.exe when building webservice on appharbor
...
answered Dec 10 '13 at 18:07
mcdrummermanmcdrummerman
2,24011 gold badge1414 silver badges99 bronze badges
...