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Python if-else short-hand [duplicate]
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[i<2 and i or i-4 for i in range(4)] returns: [-4, 1, -2, -1]. It trolled me for two days and I had to actually read code line by line with my professor to figure out why our algorithm doesn't work. Thanks.
– Ch3shire
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Java Long primitive type maximum limit [duplicate]
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Ranges from -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807.
It will start from -9,223,372,036,854,775,808
Long.MIN_VALUE.
share
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How to set xlim and ylim for a subplot in matplotlib [duplicate]
...epend on the ylim, as you said one has to set_ylim to override the current range.
– dashesy
Jan 21 '14 at 21:45
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Convert generator object to list for debugging [duplicate]
...5
import ipdb
ipdb.set_trace()
g1 = gen()
text = "aha" + "bebe"
mylst = range(10, 20)
which when run:
$ python code.py
> /home/javl/sandbox/so/debug/code.py(10)<module>()
9
---> 10 g1 = gen()
11
ipdb> n
> /home/javl/sandbox/so/debug/code.py(12)<module>()
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STL：accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...uires(_InputIteratorConcept<_InputIterator>)
__glibcxx_requires_valid_range(__first, __last);
for ( ; __first != __last; ++__first)
__init = __binary_op(__init, *__first);
return __init;
}
第四个参数为 __binary_op ,我们需要重写这个函数对象，后面还...
C++读写EXCEL文件方式比较 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。但是读取速度可以改进，如果在读取的加载整个Sheet的Range的全部数据，而不是一个个单元格读取，那么速度还是相对不错。想想原理也很简单，整体读取减少了OLE的交互次数。OLE的写入方式一般只能几个进行比较方便，所以...
stl multimap用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t++)
{
int iCurrentKey = *pIterKeySet;
PairIter = mapTest.equal_range(iCurrentKey);
while (PairIter.first != PairIter.second)
{
CString csTempKey = PairIter.first->second;
cout<<csTempKey<<endl;
PairIter.first++; //这个要的
}
}
这样...
笨法玩电商网站秒杀 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...耗尽端口资源，具体取决于内核参数「net.ipv4.ip_local_port_range」。此时提高处理队列的速度是唯一的出路。
请求合并
把类似的请求合并起来是一件既简单又复杂的事情，介于本文的标题是笨法玩秒杀，我们就挑简单的说，当我...
Google breakpad stackwalker无法加载符号 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...< 2:
print ("Please input binary files.")
sys.exit(2)
for i in range(1,len(sys.argv)):
binary = sys.argv[i]
outputFile = basename(binary) + ".sym"
command = '{0} {1} > {2}'.format("dump_syms",binary,outputFile)
print ('--> Running {0}'.format(command) )
os.system(...
SliderVertical拓展：将滑块组件旋转 90º - App Inventor 2 拓展 - 清泛IT...
将滑块组件旋转 90º，效果如下：
[hide]来源：https://community.appinventor.mi ... o-ranges-free/29465
http://kio4.com/appinventor/294K_extension_crear_Deslizador.htm
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