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Boolean operators && and ||
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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143
Yes, it's subassignment in R using <- (or = or ->) that makes a copy of the whole object....
How to get execution time in rails console?
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242
timing = Benchmark.measure { Post.all }
The various attributes of the object returned (Benchm...
What is the difference between Ruby 1.8 and Ruby 1.9
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4 Answers
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Active
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efficient circular buffer?
...range(20):
... d.append(i)
...
>>> d
deque([10, 11, 12, 13, 14, 15, 16, 17, 18, 19], maxlen=10)
There is a recipe in the docs for deque that is similar to what you want. My assertion that it's the most efficient rests entirely on the fact that it's implemented in C by an incredibly s...
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) wit...
Regular expressions in C: examples?
...ning of passing 0 to regcomp? regcomp only takes four integer values 1, 2, 4 and 8 to represent 4 different modes.
– lixiang
Sep 21 '13 at 7:40
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What is difference between sjlj vs dwarf vs seh?
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There's a short overview at MinGW-w64 Wiki:
Why doesn't mingw-w64 gcc support Dwarf-2 Exception Handling?
The Dwarf-2 EH implementation for Windows is not designed at all to
work under 64-bit Windows applications. In win32 mode, the exception
unwin...
Piping both stdout and stderr in bash?
...en-stdout-and-stderr 2>&1 | grep -i SomeError
or, using >=bash-4:
cmd-doesnt-respect-difference-between-stdout-and-stderr |& grep -i SomeError
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