大约有 900 项符合查询结果（耗时：0.0271秒） [XML]
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:...
Browser statistics on JavaScript disabled [closed]
...try (The German Federal Office for Information Security strongly recommends¹ all citizens to install NoScript.) and also available competition on the market (if your site is unique and I really want to use it, I’ll allow scripts; otherwise, I go to your competitor) might have a strong influence. ...
Remove accents/diacritics in a string in JavaScript
...nt pas d'accent ni de caractères spéciaux contrairement à la langue française qui en contient beaucoup. C'est sur ce critère que nous proposons une solution avec cet outil qui générant du faux-texte lorem ipsum mais avec en plus, des caractères spéciaux tel que les accents ou certains symbo...
How do I print the type of a variable in Rust?
...floating-point variables, if you don't constrain it, it will default to f64¹. (An unqualified integer literal will default to i32.)
See also:
What is the {integer} or {float} in a compiler error message?
¹ There may still be ways of baffling the compiler so that it can’t decide between f...
Avoid dropdown menu close on click inside
...red Oct 3 '15 at 12:44
ArbejdsglædeArbejdsglæde
11.5k1818 gold badges6666 silver badges131131 bronze badges
...
Detecting an undefined object property
...
if (typeof snaposhot === 'undefined') {
// ^
// misspelled¹ – this will never run, but it won’t throw an error!
}
var foo = …;
if (typeof foo === 'undefned') {
// ^
// misspelled – this will never run, but it won’t throw an error!
}
So unless...
String slugification in Python
I am in search of the best way to "slugify" string what "slug" is , and my current solution is based on this recipe
10 An...
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
...
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...