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What is the relative performance difference of if/else versus switch statement in Java?
...tion's performances, I am wondering which of "if/else" or switch statement is better regarding performance?
8 Answers
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File name? Path name? Base name? Naming standard for pieces of a path
...dard" naming convention will be in vain. Here are my proposals, based on existing, well-known programs:
A) C:\users\OddThinking\Documents\My Source\Widget\foo.src
Vim calls it file root (:help filename-modifiers)
B) C:\users\OddThinking\Documents\My Source\Widget\foo.src
file name or base...
Does assignment with a comma work?
...ds (from left to right) and returns the value of the second operand.
This code:
aaa = 1,2,3
Is equivalent to:
aaa = 1;
2;
3;
So aaa is implicitly declared and assigned a value of 1. Notice that the output on the console is the result of the last statement, 3.
This code:
var bbb = 1,2,3...
When should std::move be used on a function return value? [duplicate]
In this case
6 Answers
6
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What is stability in sorting algorithms and why is it important?
I'm very curious, why stability is or is not important in sorting algorithms?
10 Answers
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Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...
First off, let me just say that Jon's answer is correct. This is one of the hairiest parts of the spec, so good on Jon for diving into it head first.
Second, let me say that this line:
An implicit conversion exists from a method group to a compatible delegate type
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Returning unique_ptr from functions
...
is there some other clause in the language specification that this exploits?
Yes, see 12.8 §34 and §35:
When certain criteria are met, an implementation is allowed to omit the copy/move construction of a class object ...
Create a folder if it doesn't already exist
...
Try this, using mkdir:
if (!file_exists('path/to/directory')) {
mkdir('path/to/directory', 0777, true);
}
Note that 0777 is already the default mode for directories and may still be modified by the current umask.
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How do you use bcrypt for hashing passwords in PHP?
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bcrypt is a hashing algorithm which is scalable with hardware (via a configurable number of rounds). Its slowness and multiple rounds ensures that an attacker must deploy massive funds and hardware to be able to crack your passwords...
Optimistic vs. Pessimistic locking
I understand the differences between optimistic and pessimistic locking. Now could someone explain to me when I would use either one in general?
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