大约有 44,100 项符合查询结果(耗时:0.0558秒) [XML]
Accessing dict keys like an attribute?
...
27 Answers
27
Active
...
Pandas conditional creation of a series/dataframe column
...
print(df)
yields
Set Type color
0 Z A green
1 Z B green
2 X B red
3 Y C red
If you have more than two conditions then use np.select. For example, if you want color to be
yellow when (df['Set'] == 'Z') & (df['Type'] == 'A')
otherwise blue when (df['Set'] ...
Looping through a hash, or using an array in PowerShell
...g the keys property. Here is an example how:
$hash = @{
a = 1
b = 2
c = 3
}
$hash.Keys | % { "key = $_ , value = " + $hash.Item($_) }
Output:
key = c , value = 3
key = a , value = 1
key = b , value = 2
share...
Android Studio - How to Change Android SDK Path
...
29 Answers
29
Active
...
Difference between method and function in Scala
...
240
Jim has got this pretty much covered in his blog post, but I'm posting a briefing here for ref...
How do I remove a folder from source control with TortoiseSVN?
...
|
edited Sep 29 '14 at 9:32
answered Aug 5 '10 at 13:35
...
Convert Python dictionary to JSON array
...
answered Feb 2 '13 at 10:50
kmerenkovkmerenkov
2,60111 gold badge1616 silver badges77 bronze badges
...
Plot a bar using matplotlib using a dictionary
...ng the appropriate ticks:
import matplotlib.pyplot as plt
D = {u'Label1':26, u'Label2': 17, u'Label3':30}
plt.bar(range(len(D)), list(D.values()), align='center')
plt.xticks(range(len(D)), list(D.keys()))
# # for python 2.x:
# plt.bar(range(len(D)), D.values(), align='center') # python 2.x
# plt...
Java 8 NullPointerException in Collectors.toMap
...
324
You can work around this known bug in OpenJDK with this:
Map<Integer, Boolean> collect = ...
CSS table layout: why does table-row not accept a margin?
...
See the CSS 2.1 standard, section 17.5.3. When you use display:table-row, the height of the DIV is solely determined by the height of the table-cell elements in it. Thus, margin, padding, and height on those elements have no effect.
htt...