大约有 15,000 项符合查询结果(耗时:0.0278秒) [XML]

https://stackoverflow.com/ques... 

Getting the index of the returned max or min item using max()/min() on a list

... values = [3,6,1,5], and need the index of the smallest element, i.e. index_min = 2 in this case. Avoid the solution with itemgetter() presented in the other answers, and use instead index_min = min(range(len(values)), key=values.__getitem__) because it doesn't require to import operator nor to ...
https://stackoverflow.com/ques... 

Pros and cons of using sbt vs maven in Scala project [closed]

... answered Jul 1 '12 at 12:25 0__0__ 63k1616 gold badges147147 silver badges237237 bronze badges ...
https://stackoverflow.com/ques... 

How can I check if my python object is a number? [duplicate]

...al('2.0'), complex(2,0), Fraction(2,1), '2']: ... print '%15s %s' % (n.__repr__(), isinstance(n, Number)) 2 True 2.0 True Decimal('2.0') True (2+0j) True Fraction(2, 1) True '2' False This is, of course, contrary to duck typing. If you are more ...
https://stackoverflow.com/ques... 

Finding the type of an object in C++

... dynamic_cast should do the trick TYPE& dynamic_cast<TYPE&> (object); TYPE* dynamic_cast<TYPE*> (object); The dynamic_cast keyword casts a datum from one pointer or reference type to another, performing a runtime...
https://stackoverflow.com/ques... 

How to generate a random number in C++?

...d (assuming rand() itself is uniformly distributed from 0 to RAND_MAX) */ while( ( n = rand() ) > RAND_MAX - (RAND_MAX-5)%6 ) { /* bad value retrieved so get next one */ } printf( "%d,\t%d\n", n, n % 6 + 1 ); } return 0; } ^^^ THAT sequence from a sing...
https://stackoverflow.com/ques... 

How to change the background color of the options menu?

..."> ... <item name="android:itemBackground">@color/overflow_background</item> ... </style> Tested from API 4.2 to 5.0. share | improve this answer | ...
https://stackoverflow.com/ques... 

Get city name using geolocation

...ake an educated guess as to which one will have the city. "administrative_area_level_1" is usually what you are looking for but sometimes locality is the city you are after. Anyhow - more details on google response types can be found here and here. Below is the code that should do the trick: &...
https://stackoverflow.com/ques... 

How to use a decimal range() step value?

... @LarsWirzenius: in Python 2.2+, from __future__ import division; 3/10 returns 0.3. This behaviour is the default in Python 3.x. – Benjamin Hodgson♦ Sep 14 '12 at 11:15 ...
https://stackoverflow.com/ques... 

Java Security: Illegal key size or default parameters?

...nload link is jce-7-download Copy the two downloaded jars in Java\jdk1.7.0_10\jre\lib\security Take a backup of older jars to be on safer side. For JAVA 8 the download link is jce-8-download Copy the downloaded jars in Java\jdk1.8.0_45\jre\lib\security Take a backup of older jars to be on safer ...
https://stackoverflow.com/ques... 

Is the practice of returning a C++ reference variable evil?

...he function, use a smart pointer (or in general, a container): std::unique_ptr<int> getInt() { return std::make_unique<int>(0); } And now the client stores a smart pointer: std::unique_ptr<int> x = getInt(); References are also okay for accessing things where you know the...