大约有 31,840 项符合查询结果（耗时：0.0650秒） [XML]
What is the most efficient way to store tags in a database?
I am implementing a tagging system on my website similar to one stackoverflow uses, my question is - what is the most effective way to store tags so that they may be searched and filtered?
...
Difference between method and function in Scala
...ns (6.23) and Method Values (6.7). Curiously, function values is spoken of one time on 3.2.9, and no where else.
A Function Type is (roughly) a type of the form (T1, ..., Tn) => U, which is a shorthand for the trait FunctionN in the standard library. Anonymous Functions and Method Values have fu...
What is the purpose of fork()?
...its own address space. This allows multiple tasks to run independently of one another as though they each had the full memory of the machine to themselves.
Here are some example usages of fork:
Your shell uses fork to run the programs you invoke from the command line.
Web servers like apache use...
Best Practices: Salting & peppering passwords?
...
Ok. Seeing as I need to write about this over and over, I'll do one last canonical answer on pepper alone.
The Apparent Upside Of Peppers
It seems quite obvious that peppers should make hash functions more secure. I mean, if the attacker only gets your database, then your users password...
Understanding “randomness”
... part of the intuition, at least for sums. Imagine taking the "average" of one rolled die. Now imagine taking the average of two dice. Now one hundred. What happens to the chance of getting a one or a six for the average as you add more dice?
– johncip
Oct 18 '...
What's the nearest substitute for a function pointer in Java?
...ctly the same thing, except for a small calculation that's going to change one line of code. This is a perfect application for passing in a function pointer to replace that one line, but Java doesn't have function pointers. What's my best alternative?
...
Xcode Project vs. Xcode Workspace - Differences
...f my question (and trust me, there have been a lots of them), but for this one, there seems to be no clear answer yet.
5 An...
What is the difference between == and Equals() for primitives in C#?
...
Remember that, in the code of the question, if one changes int age = 25; to const int age = 25;, then the outcome will change. That is because an implicit conversion from int to short does exist in that case. See Implicit constant expression conversions.
...
How to retrieve checkboxes values in jQuery
...
Here's one that works (see the example):
function updateTextArea() {
var allVals = [];
$('#c_b :checked').each(function() {
allVals.push($(this).val());
});
$('#t').val(allVals);
}
$(function...
What is the difference between MVC and MVVM? [closed]
...(or other patterns of organising software into separate responsibilities). One assumption, that frequently came out of this pattern, was that the ViewModel simply replaced the controller in MVC (as if you could just substitute VM for C in the acronym and all would be forgiven)...
The ViewModel does ...