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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.
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improv...
How to install the current version of Go in Ubuntu Precise
...n
which outputs in my case (Ubuntu precise)
go version go1.1.1 linux/amd64
From there just export the settings you're gonna need to bash_rc or equivalent:
export GOROOT=/usr/lib/go
export GOBIN=/usr/bin/go
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...
How to set Java environment path in Ubuntu
...
Already solved here stackoverflow.com/questions/24641536/…
– user1420482
Apr 16 '18 at 2:02
1
...
list.clear() vs list = new ArrayList(); [duplicate]
... @RMT : Answer sounds unarguable.
– theapache64
May 20 '16 at 10:32
Sure, if the list is big or not, a clear h...
What is “missing” in the Visual Studio 2008 Express Editions?
... test framework support
No MFC/ATL support
No support for compiling C++ to 64-bit images (workaround is to install Windows SDK which is free)
NOTE: it is often said that the Express EULA does not permit commercial development - that is not true (Visual Studio Express FAQ Item 7)
...
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
....42
// Delay 2 seconds
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(2.0 * Double(NSEC_PER_SEC))), dispatch_get_main_queue()) { () -> Void in
println("Sum of times: \(time1 + time2)")
}
Objective C
CGFloat time1 = 3.49;
CGFloat time2 = 8.13;
// Delay 2 seconds
dispatch_after(...