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Multi-line commands in GHCi
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187
Most of the time, you can rely on type inference to work out a signature for you. In your exam...
Inline labels in Matplotlib
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mask = (xy[:,0] >= 0) & (xy[:,0] < N) & (xy[:,1] >= 0) & (xy[:,1] < N)
xy = xy[mask]
# add to pop
for p in xy:
pop[l][tuple(p)] = 1.0
# find whitespace, nice place for labels
ws = 1.0 - (np.sum(pop, axis=0) > 0) *...
fork() branches more than expected?
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answered Jun 21 '12 at 6:58
wallykwallyk
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Pip freeze vs. pip list
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111
When you are using a virtualenv, you can specify a requirements.txt file to install all the de...
How to set a Timer in Java?
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281
So the first part of the answer is how to do what the subject asks as this was how I initially i...
C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...题首先看如下代码：int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
printf("%d,%d\n", *(a+1), *(ptr-1));
return 0...
Shell equality operators (=, ==, -eq)
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197
It's the other way around: = and == are for string comparisons, -eq is for numeric ones. -eq i...
What is a regular expression for a MAC Address?
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How do I replace NA values with zeros in an R dataframe?
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