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Why Does OAuth v2 Have Both Access and Refresh Tokens?
...protocol indicates that an authorization server can return both an access_token (which is used to authenticate oneself with a resource) as well as a refresh_token , which is used purely to create a new access_token :
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String concatenation vs. string substitution in Python
...-squared. Some languages will optimize concatenation to the most recently allocated string, but it's risky to count on the compiler to optimize your quadratic algorithm down to linear. Best to use the primitive (join?) that takes an entire list of strings, does a single allocation, and concatenate...
Which is faster: Stack allocation or Heap allocation
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Stack allocation is much faster since all it really does is move the stack pointer.
Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches...
Cannot use ref or out parameter in lambda expressions
...id the search, to demonstrate the syntax:
public static ScanOperation<TToken> CreateScanOperation(
PrattTokenDefinition<TNode, TToken, TParser, TSelf> tokenDefinition)
{
var oldScanOperation = tokenDefinition.ScanOperation; // Closures still work.
return delegate(string text...
Java Hashmap: How to get key from value?
...));
}
Also, for Guava users, BiMap may be useful. For example:
BiMap<Token, Character> tokenToChar =
ImmutableBiMap.of(Token.LEFT_BRACKET, '[', Token.LEFT_PARENTHESIS, '(');
Token token = tokenToChar.inverse().get('(');
Character c = tokenToChar.get(token);
...
Uncaught SyntaxError: Unexpected token with JSON.parse
... it attempts json.parse('[object Array]') which complains it didn't expect token o after [.
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How can I tell when HttpClient has timed out?
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@UserControl check TaskCanceledException.CancellationToken.IsCancellationRequested. If false, you can be reasonably certain it was a timeout.
– Todd Menier
Apr 28 '14 at 22:29
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When should I use the new keyword in C++?
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Method 1 (using new)
Allocates memory for the object on the free store (This is frequently the same thing as the heap)
Requires you to explicitly delete your object later. (If you don't delete it, you could create a memory leak)
Memory stays al...
Does the APNS device token ever change, once created?
Once created does the push notification device token ever change?
13 Answers
13
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How to repeat a string a variable number of times in C++?
...ster implementation, the idea is to minimise copying operations and memory allocations by first exponentially growing the string:
#include <string>
#include <cstddef>
std::string repeat(std::string str, const std::size_t n)
{
if (n == 0) {
str.clear();
str.shrink_to...