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Why are preprocessor macros evil and what are the alternatives?
...er be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alternative after so many years?
...
Initialization of all elements of an array to one default value in C++?
C++ Notes: Array Initialization has a nice list over initialization of arrays. I have a
13 Answers
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“媒”出路？如今“媒体+行业”创业机会多得是 - 资讯 - 清泛网 - 专注C/C+...
...媒体价值的变现。“互联网+”的概念之所以如此盛行，不仅仅因为它是龙头企业大佬抛的概念，或是国家最高层面的领导捧场站台。其核心本质是因为互联网做为一个独立行业，自身的革新变化已经完成，此时，其做为基本工...
Go > operators
... power of 2) in other languages, but because Go is a safer language than C/C++ it does some extra work when the shift count is a number.
Shift instructions in x86 CPUs consider only 5 bits (6 bits on 64-bit x86 CPUs) of the shift count. In languages like C/C++, the shift operator translates into a ...
How to check visibility of software keyboard in Android?
...) - activityRootView.getHeight();
if (heightDiff > dpToPx(this, 200)) { // if more than 200 dp, it's probably a keyboard...
// ... do something here
}
}
});
Using a utility such as:
public static float dpToPx(Context context, float valueInDp) {
DisplayMetr...
Using bitwise OR 0 to floor a number
...FFF) === 2147483647
(2147483647 & 0xFFFFFFFF) === 2147483647
(200.59082098 & 0xFFFFFFFF) === 200
(0X7FFFFFFF & 0xFFFFFFFF) === 0X7FFFFFFF
// Unsafe
(2147483648 & 0xFFFFFFFF) === -2147483648
(-2147483649 & 0xFFFFFFFF) === 2147483647
(0x80000000 ...
Declaring variables inside loops, good practice or bad practice?
...y information
The open-source tool CppCheck (a static analysis tool for C/C++ code) provides some excellent hints regarding optimal scope of variables.
In response to comment on allocation:
The above rule is true in C, but might not be for some C++ classes.
For standard types and structures, the ...
奇葩职位为何频现互联网？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...以往害怕“挨骂”的企业则纷纷主动“找骂”，这种转变不能不让业界惊叹：行业的口碑竞争时代难道已经来“游山玩水，不爽就骂，费用报销，年薪百万。我们会签正式合同，绝不是临时工！”同程旅游创始人、CEO吴志祥前日...
浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...红外成像
唠叨了半天，听上去似乎有点跑题了，其实不然，对互联网从业者而言，同样需要有火眼金睛，以便识别网友的喜好，此时的衡量标准是点击，点击越多则表示越喜欢，此技术被称作Heatmap，已经有网站提供此类服务...
Why does volatile exist?
What does the volatile keyword do? In C++ what problem does it solve?
18 Answers
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