大约有 3,200 项符合查询结果（耗时：0.0218秒） [XML]
How to implement the Android ActionBar back button?
... answered Apr 17 '15 at 7:30
Sågär ŚåxëńáSågär Śåxëńá
10111 silver badge66 bronze badges
...
Limit the length of a string with AngularJS
... the "...". The result should be: "My String..."
– Snæbjørn
Sep 2 '14 at 13:37
I'm not seeing the ellipsis here: pln...
How do I create a list of random numbers without duplicates?
...cted from 0 to 99, without duplicates. Benchmarking in IPython, yields 103 µs ± 513 ns for %timeit random.sample(range(1000), 100) , and 17 µs ± 1.24 µs for %timeit np.random.permutation(1000)[:100] .
– Ant Plante
Sep 4 at 10:26
...
Spring get current ApplicationContext
... edited Oct 6 '17 at 10:39
buræquete
12.5k44 gold badges3131 silver badges6262 bronze badges
answered Sep 19 '16 at 13:59
...
Is there a NumPy function to return the first index of something in an array?
...or idx, val in np.ndenumerate(a) if val==0))
100000 loops, best of 3: 17.6 µs per loop
In [287]: %timeit np.argmax(a==0)
1000 loops, best of 3: 254 µs per loop
In [288]: %timeit np.where(a==0)[0][0]
1000 loops, best of 3: 314 µs per loop
This is an open NumPy GitHub issue.
See also: Numpy:...
How to develop a soft keyboard for Android? [closed]
...o", "p", "q", "r", "s", "t", "u", "v", "w",
"x", "y", "z", "ç", "à", "é", "è", "û", "î" };
private String cL[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J",
"K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W",
"X", "Y", "Z", "ç", "à", "é", "è", "û", "î" };
...
Pandas percentage of total with groupby
...les'].sum().rename("count")
c / c.groupby(level=0).sum()
3.42 ms ± 16.7 µs per loop
(mean ± std. dev. of 7 runs, 100 loops each)
2nd Paul H
state_office = df.groupby(['state', 'office_id']).agg({'sales': 'sum'})
state = df.groupby(['state']).agg({'sales': 'sum'})
state_office.div(state, lev...
Get folder name from full file path
...red Mar 8 '11 at 6:53
Øyvind BråthenØyvind Bråthen
52.2k2525 gold badges113113 silver badges138138 bronze badges
...
Get the (last part of) current directory name in C#
...ot exactly what the question was about.
– Jakob Möllås
May 16 '11 at 13:47
...
Creating a zero-filled pandas data frame
...index=orig_df.index, columns=orig_df.columns)
10000 loops, best of 3: 60.2 µs per loop
Compare to:
In [4]: %timeit d = pd.DataFrame(0, index = np.arange(10), columns=columns)
10000 loops, best of 3: 110 µs per loop
In [5]: temp = np.zeros((10, 10))
In [6]: %timeit d = pd.DataFrame(temp, column...