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Why should eval be avoided in Bash, and what should I use instead?
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What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
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answered Mar 21 '10 at 6:24
Andrew HareAndrew Hare
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Using awk to print all columns from the nth to the last
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24 Answers
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Remove an entire column from a data.frame in R
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421
You can set it to NULL.
> Data$genome <- NULL
> head(Data)
chr region
1 chr1 CD...
Check if something is (not) in a list in Python
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Syntax behind sorted(key=lambda: …)
...at of def to create a function.
adder_lambda = lambda parameter1,parameter2: parameter1+parameter2
def adder_regular(parameter1, parameter2): return parameter1+parameter2
lambda just gives us a way of doing this without assigning a name. Which makes it great for using as a parameter to a function...
What is the difference between print and puts?
...ot one already.
print does not add a new line.
For example:
puts [[1,2,3], [4,5,nil]] Would return:
1
2
3
4
5
Whereas print [[1,2,3], [4,5,nil]]
would return:
[[1,2,3], [4,5,nil]]
Notice how puts does not output the nil value whereas print does.
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How to get all subsets of a set? (powerset)
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26 Answers
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Multiple linear regression in Python
...ress my dependent variable (y) against several independent variables (x1, x2, x3, etc.).
13 Answers
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Equation for testing if a point is inside a circle
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In general, x and y must satisfy (x - center_x)^2 + (y - center_y)^2 < radius^2.
Please note that points that satisfy the above equation with < replaced by == are considered the points on the circle, and the points that satisfy the above equation with < replaced ...