大约有 45,300 项符合查询结果（耗时：0.0427秒） [XML]
Formatting floats without trailing zeros
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Alex MartelliAlex Martelli
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Explicitly calling return in a function or not
...turn. The following plot is created from data selected this way:
bench_nor2 <- function(x,repeats) { system.time(rep(
# without explicit return
(function(x) vector(length=x,mode="numeric"))(x)
,repeats)) }
bench_ret2 <- function(x,repeats) { system.time(rep(
# with explicit return
(function(...
Copying the GNU screen scrollback buffer to a file (extended hardcopy)
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286
To write the entire contents of the scrollback buffer to a file, type
Ctrl + A and :
to get t...
Random float number generation
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This will generate a number from 0.0 to some arbitrary float, X:
float r2 = static_cast <float> (rand()) / (static_cast <float> (RAND_MAX/X));
This will generate a number from some arbitrary LO to some arbitrary HI:
float r3 = LO + static_cast <float> (rand()) /( static_cast ...
How do you run multiple programs in parallel from a bash script?
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227
prog1 &
prog2 &
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How can I get the assembly file version
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edited May 26 at 16:04
billinkc
52.1k99 gold badges9494 silver badges145145 bronze badges
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Python naming conventions for modules
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answered Apr 2 '09 at 22:34
Stephan202Stephan202
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How do I print a double value with full precision using cout?
...y on std::cout and use the std::fixed format specifier.
double d = 3.14159265358979;
cout.precision(17);
cout << "Pi: " << fixed << d << endl;
You can #include <limits> to get the maximum precision of a float or double.
#include <limits>
typedef std::numeric_...
What is a Proxy in Doctrine 2?
I just finished reading all the Doctrine 2 documentation, I started my own sandbox, I understood most of the principes, but there is still a question and I couldn't find any complete explanation in the doc.
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ie8 var w= window.open() - “Message: Invalid argument.”
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251
This is an old posting but maybe still useful for someone.
I had the same error message. In t...