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Iterate a list as pair (current, next) in Python
...ls module docs:
import itertools
def pairwise(iterable):
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
a, b = itertools.tee(iterable)
next(b, None)
return zip(a, b)
For Python 2, you need itertools.izip instead of zip:
import itertools
def pairwise(iterable):
"s -> (s0,s1),...
What is meant by immutable?
...rDouglas Leeder
47.7k88 gold badges8484 silver badges127127 bronze badges
3
...
How to calculate the intersection of two sets? [duplicate]
...
Use the retainAll() method of Set:
Set<String> s1;
Set<String> s2;
s1.retainAll(s2); // s1 now contains only elements in both sets
If you want to preserve the sets, create a new set to hold the intersection:
Set<String> intersection = new HashSet<String&...
c/c++如何获取CPU的序列号？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...nsigned long st1 = 0;
unsigned long st2 = 0;
unsigned long s1,s2;
unsigned char vendor_id[]="------------";
char CPUSERIAL[20];
memset(CPUSERIAL,0,20);
__asm{
xor eax,eax
cpuid
mov dword ptr vendor_id,ebx
mov dword ptr vendor_id[+4],...
VBA 行剪切到其他Sheet - 更多技术 - 清泛网 - 专注C/C++及内核技术
VBA 行剪切到其他SheetVBA 行剪切代码：Worksheets("S1") Range("A" & 1) EntireRow Copy Worksheets("S2") Range("A" & 1)Worksheets("S1") Range("A" & VBA 行剪切代码：
Worksheets("S1").Range("A" & 1).EntireRow.Copy Worksheets("S2").Range("A" & 1)
Worksheets("S1").Range("A" & 1).Enti...
How to change Android version and code version number?
...version and code version number Android Studio? I want to change apk file (app) on Google Play and I need to change Android version and code version number. I tried with this in AndroidManifest.xml file in Android Studio:
...
C# string reference type?
... Paul Fleming
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answered Jul 8 '09 at 6:51
eglasiuseglasius
34.5k44 gold...
Java Byte Array to String to Byte Array
...array anymore. For example :
byte[] b1 = new byte[] {97, 98, 99};
String s1 = Arrays.toString(b1);
String s2 = new String(b1);
System.out.println(s1); // -> "[97, 98, 99]"
System.out.println(s2); // -> "abc";
As you can see, s1 holds the string representation of the array b1...
Case-insensitive string comparison in C++ [closed]
...
Josh Kelley
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answered Nov 24 '08 at 21:03
RobRob
...
What's the _ underscore representative of in Swift References?
..., we have this foo() method defined in class Bar:
class Bar{
func foo(s1: String, s2: String) -> String {
return s1 + s2;
}
}
When you call foo(), it is called like bar.foo("Hello", s2: "World").
But, you can override this behavior by using _ in front of s2 where it's declared...