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xkcd style graphs in MATLAB
...,3);
plot(x,y2,'w','lineWidth',7);
plot(x,y2,'r','lineWidth',3);
xlim([0.95 10])
ylim([0 5])
set(gca,'fontName','Comic Sans MS','fontSize',18,'lineWidth',3,'box','off')
%# add an annotation
annotation(fh,'textarrow',[0.4 0.55],[0.8 0.65],...
'string',sprintf('text%shere',char(10)),'headStyl...
Reverse Range in Swift
...
185
Update For latest Swift 3 (still works in Swift 4)
You can use the reversed() method on a range...
What is the difference between Ruby 1.8 and Ruby 1.9
...ion: Use Hash.key
Fixnum.to_sym Now Gone
Ruby 1.9
irb(main):001:0> 5.to_sym
NoMethodError: undefined method 'to_sym' for 5:Fixnum
Ruby 1.8.6
irb(main):001:0> 5.to_sym
=> nil
(Cont'd) Ruby 1.9
# Find an argument value by name or index.
def [](index)
lookup(index.to_sym)
end
sv...
Convert column classes in data.table
...
105
For a single column:
dtnew <- dt[, Quarter:=as.character(Quarter)]
str(dtnew)
Classes ‘da...
How can I obtain the element-wise logical NOT of a pandas Series?
...st of 3: 91.8 µs per loop
In [11]: %timeit ~s
10000 loops, best of 3: 73.5 µs per loop
In [12]: %timeit (-s)
10000 loops, best of 3: 73.5 µs per loop
As of Pandas 0.13.0, Series are no longer subclasses of numpy.ndarray; they are now subclasses of pd.NDFrame. This might have something to do w...
Replace all 0 values to NA
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252
Replacing all zeroes to NA:
df[df == 0] <- NA
Explanation
1. It is not NULL what you s...
Expand a random range from 1–5 to 1–7
Given a function which produces a random integer in the range 1 to 5, write a function which produces a random integer in the range 1 to 7.
...
What are the aspect ratios for all Android phone and tablet devices?
...
5 Answers
5
Active
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C char array initialization
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225
This is not how you initialize an array, but for:
The first declaration:
char buf[10] = "";
...
Fastest hash for non-cryptographic uses?
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58
CRC32 is pretty fast and there's a function for it: http://www.php.net/manual/en/function.crc32...