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Android SDK Manager Not Installing Components
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In my case I had to specify proxy settings in Tools->Options.
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How can I create a keystore?
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I've used this command which sets the 2 passwords so that you skip some of the prompts: keytool -genkey -v -keystore debug.keystore -storepass android -alias android -keypass android -keyalg RSA -keysize 2048 -validity 10000. Then to generate the SHA-1 ...
Do you use NULL or 0 (zero) for pointers in C++?
... 0. For example, handles are often implemented as some integral type, and setting them to NULL is not uncommon. I've even seen abuses like using NULL to set a char to a zero-terminator.
– Adrian McCarthy
May 1 '12 at 22:41
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What's the rationale for null terminated strings?
...ing
array initialisation in C, you can
even avoid the NUL terminator. Just
set the right size. char a[3] =
"foo"; is valid C (not C++) and
won't put a final zero in a.
coherent with the unix point of view "everything is file", including
"files" that have no intrinsic length
like stdin, stdout. You s...
Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
...e 4 ECMAScript proposal. You can use it today with Babel. It allows you to set a default value if the left-hand side of the operator is a nullary value (null/undefined).
const myVariable = a?.b?.c ?? 'Some other value';
// Evaluates to 'Some other value'
const myVariable2 = null ?? 'Some other valu...
Difference between VARCHAR and TEXT in MySQL [duplicate]
When we create a table in MySQL with a VARCHAR column, we have to set the length for it. But for TEXT type we don't have to provide the length.
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When should iteritems() be used instead of items()?
...ewvalues methods, the most useful being viewkeys which behaves more like a set (which you'd expect from a dict).
Simple example:
common_keys = list(dict_a.viewkeys() & dict_b.viewkeys())
Will give you a list of the common keys, but again, in Python 3.x - just use .keys() instead.
Python 3.x...
What is the meaning of “non temporal” memory accesses in x86
...d IA-32 Architectures Software Developer’s Manual, Volume 2: Instruction Set Reference
LOAD (MOVNTDQA—Load Double Quadword Non-Temporal Aligned Hint)
Loads a double quadword from the source operand (second operand) to the destination operand (first operand) using a non-temporal hint if the memo...
Scala type programming resources
...ere a is of type A and b is of type B.
Additional Resources
The complete set of available constructs can be found in the types section of the scala reference manual (pdf).
Adriaan Moors has several academic papers about type constructors and related topics with examples from scala:
Generics of ...
Is there a way for multiple processes to share a listening socket?
...still in the parent process however), which will have the inheritable flag set on it. Then you can give that handle in the STARTUPINFO structure to the child process in CreateProcess as a STDIN, OUT or ERR handle (assuming you didn't want to use it for anything else).
EDIT:
Reading the MDSN librar...