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Does Python have a ternary conditional operator?
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7254
Yes, it was added in version 2.5. The expression syntax is:
a if condition else b
First conditi...
Why was the switch statement designed to need a break?
...default fall
through was used. The Sun ANSI C
compiler front end has 244 switch
statements, each of which has an
average of seven cases. Fall through
occurs in just 3% of all these cases.
In other words, the normal switch
behavior is wrong 97% of the time.
It's not just in a com...
Counting the number of elements with the values of x in a vector
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You can just use table():
> a <- table(numbers)
> a
numbers
4 5 23 34 43 54 56 65 67 324 435 453 456 567 657
2 1 2 2 1 1 2 1 2 1 3 1 1 1 1
Then you can subset it:
> a[names(a)==435]
435
3
Or convert it into a data.frame if you're mor...
How to convert an Stream into a byte[] in C#? [duplicate]
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164
Call next function like
byte[] m_Bytes = StreamHelper.ReadToEnd (mystream);
Function:
publ...
What is the difference between atan and atan2 in C++?
...all four quadrants. std::atan only allows calculating from quadrants 1 and 4.
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Correct way to detach from a container without stopping it
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answered Aug 12 '14 at 15:21
ReganRegan
6,42544 gold badges1919 silver badges2323 bronze badges
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PyPy — How can it possibly beat CPython?
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4 Answers
4
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How to know/change current directory in Python shell?
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304
You can use the os module.
>>> import os
>>> os.getcwd()
'/home/user'
>>...
Which version of PostgreSQL am I running?
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1674
Run this query from PostgreSQL:
SELECT version();
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Getting SyntaxError for print with keyword argument end=' '
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14 Answers
14
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