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Different between parseInt() and valueOf() in java?
...ger.valueOf(Integer.parseInt("123"))
Now, if what you want is the object and not the primitive, then using valueOf(String) may be more attractive than making a new object out of parseInt(String) because the former is consistently present across Integer, Long, Double, etc.
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When should I make explicit use of the `this` pointer?
...re is a name ambiguity, where it can be used to disambiguate class members and local variables. However, here is a completely different case where this-> is explicitly required.
Consider the following code:
template<class T>
struct A {
int i;
};
template<class T>
struct B : A<...
How to handle WndProc messages in WPF?
In Windows Forms, I'd just override WndProc , and start handling messages as they came in.
9 Answers
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How to find nth occurrence of character in a string?
... answered Oct 20 '10 at 10:25
andcozandcoz
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How to provide user name and password when connecting to a network share
...rent user (in my case, a network enabled service user) has no rights, name and password have to be provided.
11 Answers
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Is inline assembly language slower than native C++ code?
I tried to compare the performance of inline assembly language and C++ code, so I wrote a function that add two arrays of size 2000 for 100000 times. Here's the code:
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Wi-Fi 是什么的缩写 - 程序人生、谈天论地 - 清泛IT论坛，有思想、有深度
请对照上图自测。如果你是 Level 0，阅读本文前建议先搜索并查看相关资料学习 Wi-Fi 的基本概念，本文将不涉及定义或技术上的解释。Wi-Fi 是 Wireless Fidelity 吗一天和客户闲聊，我随口问了一句，Wi-Fi 是什么的缩写？客户是个美...
C++ preprocessor __VA_ARGS__ number of arguments
...
This is actually compiler dependent, and not supported by any standard.
Here however you have a macro implementation that does the count:
#define PP_NARG(...) \
PP_NARG_(__VA_ARGS__,PP_RSEQ_N())
#define PP_NARG_(...) \
PP_ARG_N(__VA_ARGS__)
#...
ActiveRecord OR query
...zation and make your queries DB agnostic. The only overhead is where Rails converts the syntax to SQL query. And it is just a matter of milliseconds. Ofcourse you should write the best performant SQL query and try to convert it to ActiveRecord syntax. If the SQL cannot be represented in ActiveRecord...
Javascript / Chrome - How to copy an object from the webkit inspector as code
...'s done - to copy that object as javascript code. What I'm trying to do is convert an object that was created using ajax to parse an xml feed into a static javascript object so that a file can run locally, without a server. I've included a screenshot of the object in the chrome inspector window so y...