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C++ STL Vectors: Get iterator from index?
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answered Mar 22 '09 at 18:42
dirkgentlydirkgently
98.7k1616 gold badges119119 silver badges180180 bronze badges
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Disable assertions in Python
...rt False"
Traceback (most recent call last):
File "<string>", line 1, in <module>
AssertionError
Note that by disable I mean it also does not execute the expression that follows it:
$ python -Oc "assert 1/0"
$ python -c "assert 1/0"
Traceback (most recent call last):
File "<st...
How do I use floating-point division in bash?
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18 Answers
18
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Python and pip, list all versions of a package that's available?
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16 Answers
16
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pyplot scatter plot marker size
...d the output they produce.
# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quickly. If instead we have
# doubling the area of markers
x = [0,2,4,6,8,10]
y = [0]*len(...
Is there a difference between x++ and ++x in java?
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16 Answers
16
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dropping infinite values from dataframes in pandas?
... use the dropna:
df.replace([np.inf, -np.inf], np.nan).dropna(subset=["col1", "col2"], how="all")
For example:
In [11]: df = pd.DataFrame([1, 2, np.inf, -np.inf])
In [12]: df.replace([np.inf, -np.inf], np.nan)
Out[12]:
0
0 1
1 2
2 NaN
3 NaN
The same method would work for a Series.
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Why does an overridden function in the derived class hide other overloads of the base class?
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410
Judging by the wording of your question (you used the word "hide"), you already know what is go...
How to implement a queue using two stacks?
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710
Keep 2 stacks, let's call them inbox and outbox.
Enqueue:
Push the new element onto inbox
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Why always ./configure; make; make install; as 3 separate steps?
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121
Because each step does different things
Prepare(setup) environment for building
./configure
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