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How to check if any flags of a flag combination are set?
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If you want to know if letter has any of the letters in AB you must use the AND & operator. Something like:
if ((letter & Letters.AB) != 0)
{
// Some flag (A,B or both) is enabled
}
else
{
// None of them are enabled
}
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Iterating over every two elements in a list
...lementation.
For Python 2:
from itertools import izip
def pairwise(iterable):
"s -> (s0, s1), (s2, s3), (s4, s5), ..."
a = iter(iterable)
return izip(a, a)
for x, y in pairwise(l):
print "%d + %d = %d" % (x, y, x + y)
Or, more generally:
from itertools import izip
def group...
Connect Device to Mac localhost Server? [closed]
How do I allow any device, e.g., iPhone, to connect over a WLAN to my Mac's localhost server?
14 Answers
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What does “:=” do?
I've seen := used in several code samples, but never with an accompanying explanation. It's not exactly possible to google its use without knowing the proper name for it.
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Java SafeVarargs annotation, does a standard or best practice exist?
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1) There are many examples on the Internet and on StackOverflow about the particular issue with generics and varargs. Basically, it's when you have a variable number of arguments of a type-parameter type:
<T> void foo(T... args);
In Java, varargs are a syntactic sugar that undergo...
What is the best way to compute trending topics or tags?
...s Trends". There, you can see the topics which have the fastest growing number of mentions.
11 Answers
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BitBucket - download source as ZIP
I know I can get the project through git clone command, but is there any way, how to download the project through the web interface from BitBucket.org ?
In the best way, I am looking for a way to download a project source as ZIP compress file.
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How to print (using cout) a number in binary form?
I'm following a college course about operating systems and we're learning how to convert from binary to hexadecimal, decimal to hexadecimal, etc. and today we just learned how signed/unsigned numbers are stored in memory using the two's complement (~number + 1).
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Where can I find Android source code online? [closed]
...y, where can I browse the source code for any android source application(e.g.the contact application) ? Is the only way to go to download all there is?
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The tilde operator in C
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The ~ operator is bitwise NOT, it inverts the bits in a binary number:
NOT 011100
= 100011
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