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printf() formatting for hex
...but how about the hex: 0x43A66C31C68491C0 I have tried the following: __int64 int64 = 0x43A66C31C68491C0; printf_s("%#15X %d",int64,int64); But the output is 0XC68491C0, not 0x43A66C31C68491C0
– 123iamking
May 7 '16 at 4:16
...
Frequency table for a single variable
...,2,3,3,3])
print(my_series.value_counts())
3 3
2 2
1 1
dtype: int64
Notice here that the item returned is a pandas.Series
In comparison, numpy.unique returns a tuple with two items, the unique values and the counts.
vals, counts = np.unique(my_series, return_counts=True)
print(vals, co...
C library function to perform sort
...range of incredibly fast sorting routings, like so:
#define SORT_NAME int64
#define SORT_TYPE int64_t
#define SORT_CMP(x, y) ((x) - (y))
#include "sort.h"
/* You now have access to int64_quick_sort, int64_tim_sort, etc., e.g., */
int64_quick_sort(arr, 128); /* Assumes you have some int *arr or int...
How to use QueryPerformanceCounter?
...
#include <windows.h>
double PCFreq = 0.0;
__int64 CounterStart = 0;
void StartCounter()
{
LARGE_INTEGER li;
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
QueryPerfor...
AES Encryption for an NSString on the iPhone
...d 10.4 doesn't, so YMMV.
EDIT: See this follow-up question on using Base64 encoding for representing encrypted data bytes as a string (if desired) using safe, lossless conversions.
share
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improv...
VS 2015 Preview版已经发布,支持Android开发 - IT产品资讯 - 清泛网 - 专注IT技能提升
...持完全基于.NET Compiler Platform(Roslyn),该版本的重点也是放在了云上。其中包括使用ASP.NET vNet打造为云而优化的网站的功能。
VS 2014的CTP(社区技术预览版)的主要目的是鼓励开发人员提供早期反馈,以便微软对其进行充分必要的...
国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术
...混乱代码大赛结果《你见过或写过的最复杂的 C 语言程序是?》这个帖子中的指针,对部分童鞋来说够烧脑子了。觉着不过瘾的朋友,继续来看看本文。第 24 届国际 C 语言混乱代码大赛结果出炉了,之前两位常在该比赛中拿奖...
老人炒股亏了本一怒打隔壁老王 因他穿绿衬衫 - 轻松一刻 - 清泛网 - 专注C/...
...因他穿绿衬衫家住重庆巴南区龙洲湾的徐大爷年近七旬,是个老股民,退休后就用自己的退休金在家炒股,同时他还是一个非常迷信的人。
家住重庆巴南区龙洲湾的徐大爷年近七旬,是个老股民,退休后就用自己的退休金在家...
C++模板-继承-具现化 - C/C++ - 清泛网 - 专注C/C++及内核技术
...est>
{
public:
int val;
};
怎么样?看了上面的代码,大家是否有些迷惑?首先,类NewHandlerSurpport采用的模板类的定义,其内部却没用到类型T;其次,它的子类在继承时,用了class Test : public NewHandlerSurpport<Test>的方式,将自身作为...
fstream默认不支持中文路径和输出整数带逗号的解决办法 - C/C++ - 清泛网 -...
...);
}
程序将输出创建文件夹失败的信息。
一个解决办法是:在中文操作系统下,调用locale::global(std::locale("")),将全局区域设置为中文,如下例:
#include <iostream>
#include <fstream>
#include <string>
#include <direct.h>
using namespace st...
