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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...np.random.randn(int(1e6))})
test = test.drop(test[test.x > 0].index)
# 194 ms ± 7.03 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
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Can I draw rectangle in XML?
...ground_shape">
<stroke android:width="2dp" android:color="#ff207d94" />
<padding android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp" />
<corners android:radius="5dp" />
<solid android:color="#ffffffff" />
&l...
Creating a zero-filled pandas data frame
...taFrame(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, columns=columns)
10000 loops, best of 3: 95.7 µs per loop
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How to use Bash to create a folder if it doesn't already exist?
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94
There is actually no need to check whether it exists or not. Since you already wants to create ...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
...8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x9...
Plurality in user messages
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94
You can avoid all of this messy plurality by just deleting the items without any message and gi...
CSS @font-face - what does “src: local('☺')” mean?
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94
if you read the notes in font-squirrel's font-face generator, you'll see that it was a gotcha b...
What is the “right” way to iterate through an array in Ruby?
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Robert GambleRobert Gamble
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Check if object is file-like in Python
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Nadia AlramliNadia Alramli
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Is there any way to close a StreamWriter without closing its BaseStream?
...ew method fot that!
http://msdn.microsoft.com/EN-US/library/gg712853(v=VS.110,d=hv.2).aspx
public StreamWriter(
Stream stream,
Encoding encoding,
int bufferSize,
bool leaveOpen
)
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