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Javascript: formatting a rounded number to N decimals
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edited Feb 8 '10 at 11:33
answered Feb 8 '10 at 11:27
Gu...
Why does i = i + i give me 0?
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The issue is due to integer overflow.
In 32-bit twos-complement arithmetic:
i does indeed start out having power-of-two values, but then overflow behaviors start once you get to 230:
230 + 230 = -231
-231 + -231 = 0
...in int arithmetic, since it's essentially ari...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
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13 Answers
13
Active
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Take the content of a list and append it to another list
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379
You probably want
list2.extend(list1)
instead of
list2.append(list1)
Here's the differen...
How to add title to subplots in Matplotlib?
...fig = plt.figure()
ax1 = fig.add_subplot(221)
ax2 = fig.add_subplot(222)
ax3 = fig.add_subplot(223)
ax4 = fig.add_subplot(224)
ax1.title.set_text('First Plot')
ax2.title.set_text('Second Plot')
ax3.title.set_text('Third Plot')
ax4.title.set_text('Fourth Plot')
plt.show()
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Python `if x is not None` or `if not x is None`?
...ompile to the same bytecode:
Python 2.6.2 (r262:71600, Apr 15 2009, 07:20:39)
>>> import dis
>>> def f(x):
... return x is not None
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>>> dis.dis(f)
2 0 LOAD_FAST 0 (x)
3 LOAD_CONST 0 (None)
6 COMPA...
How to convert index of a pandas dataframe into a column?
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835
either:
df['index1'] = df.index
or, .reset_index:
df.reset_index(level=0, inplace=True)
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Debugging “Element is not clickable at point” error
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333
This is caused by following 3 types:
1.The element is not visible to click.
Use Actions or J...
Creating an instance of class
What's the difference between lines 1 , 2 , 3 , 4?
3 Answers
3
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Escaping regex string
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336
Use the re.escape() function for this:
4.2.3 re Module Contents
escape(string)
Retur...