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Generate array of all letters and digits
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145
[*('a'..'z'), *('0'..'9')] # doesn't work in Ruby 1.8
or
('a'..'z').to_a + ('0'..'9').to_a ...
How do you plot bar charts in gnuplot?
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124
Simple bar graph:
set boxwidth 0.5
set style fill solid
plot "data.dat" using 1:3:xtic(2) w...
What is the difference between BIT and TINYINT in MySQL?
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124
A TINYINT is an 8-bit integer value, a BIT field can store between 1 bit, BIT(1), and 64 bits,...
Reuse a parameter in String.format?
...of the argument in the argument list. The first argument is referenced by "1$", the second by "2$", etc.
String.format("%1$s %1$s %1$s %1$s %1$s %1$s", hello);
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How can I obtain an 'unbalanced' grid of ggplots?
...as in
p = rectGrob()
grid.arrange(p, arrangeGrob(p,p,p, heights=c(3/4, 1/4, 1/4), ncol=1),
ncol=2)
Edit (07/2015): with v>2.0.0 you can use the layout_matrix argument,
grid.arrange(p,p,p,p, layout_matrix = cbind(c(1,1,1), c(2,3,4)))
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Boolean vs tinyint(1) for boolean values in MySQL
...atabase for boolean values? I use boolean but my colleague uses tinyint(1) .
6 Answers
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WinDBG用法详解 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
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Asterisk in function call
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182
* is the "splat" operator: It takes a list as input, and expands it into actual positional arg...
Getting individual colors from a color map in matplotlib
...lib.cm.get_cmap('Spectral')
rgba = cmap(0.5)
print(rgba) # (0.99807766255210428, 0.99923106502084169, 0.74602077638401709, 1.0)
For values outside of the range [0.0, 1.0] it will return the under and over colour (respectively). This, by default, is the minimum and maximum colour within the range ...
Implementing slicing in __getitem__
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121
The __getitem__() method will receive a slice object when the object is sliced. Simply look at...