大约有 830 项符合查询结果（耗时：0.0503秒） [XML]
How to automatically generate a stacktrace when my program crashes
...ace:
/lib/libSegFault.so[0xb7f9e100]
??:0(??)[0xb7fa3400]
/usr/include/c++/4.3/bits/stl_queue.h:226(_ZNSt5queueISsSt5dequeISsSaISsEEE4pushERKSs)[0x805647a]
/home/dbingham/src/middle-earth-mud/alpha6/src/engine/player.cpp:73(_ZN6Player5inputESs)[0x805377c]
/home/dbingham/src/middle-earth-mud/alpha6/s...
How are msys, msys2, and msysgit related to each other?
...get, and to which MacOSX users are
used to from Homebrew or MacPorts, or BSD users from the Ports system,
to MSys2: a simple pacman -Syu will update all installed packages to
the newest versions currently available.
MSys2 is also very active, typically providing package updates
multiple...
How to modify a global variable within a function in bash?
... then let's implement an API for exactly this:
# This needs a modern bash 4.3 (see "help declare" if "-n" is present,
# we get rid of it below anyway).
: capture VARIABLE command args..
capture()
{
local -n output="$1"
shift
output="$("$@")"
}
Now, instead of writing
d1=$(d)
we can write
capt...
How to profile a bash shell script slow startup?
... follow in this...
Using script, scriptreplay and timing file
As part of BSD Utils, script (and scriptreplay) is a very old tool which can be used to profile bash, with a very small footprint.
script -t script.log 2>script.tim -c 'bash -x -c "
for ((i=3;i--;));do sleep .1;done
for ((i...
Pretty-print C++ STL containers
... which is available as part of C++0x, and works in Visual C++ 2010 and g++ 4.3 (needs the -std=c++0x flag) and later. This way there is no dependency on Boost.
share
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Cartesian product of x and y array points into single array of 2D points
...std. dev. of 7 runs, 10 loops each)
cartesian_product_transpose:
184 ms ± 4.32 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
cartesian_product_itertools:
3.69 s ± 73.5 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
In [7]: test_cartesian(*(x10 * 6))
cartesian_product:
26.5 ms ...
Unicode equivalents for \w and \b in Java regular expressions?
...ent wish to see that done (with some sort of open-source licence, probably BSD or ASL). I'm probably going to change the API from what it is in this alpha prototype, clean up the code, etc. But it helps us out tremendously, and we figure it will help others, too. I really wish Sun would do something...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
... Yes, thanks indeed it improves somewhat. I now get about 4.1-4.3 Gflops, or 1.55 flops per cycle. And no, in this example -O2 didn't loop unroll.
– user1059432
Dec 5 '11 at 18:37
...
What is the difference between quiet NaN and signaling NaN?
...eference Manual - ARMv8, for ARMv8-A architecture profile - DDI 0487C.a A1.4.3 "Single-precision floating-point format":
fraction != 0: The value is a NaN, and is either a quiet NaN or a signaling NaN. The two types of NaN are distinguished by their most significant fraction bit, bit[22]:
bit[22]...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...值
@smin(x1,x2,…,xn) 返回x1，x2，…，xn中的最小值
例4.3 给定一个直角三角形，求包含该三角形的最小正方形。
解：如图所示。
求最小的正方形就相当于求如下的最优化问题：
LINGO代码如下：
model:
sets:
object/1..3/:...