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Check if at least two out of three booleans are true
An interviewer recently asked me this question: given three boolean variables, a, b, and c, return true if at least two out of the three are true.
...
java.util.Date vs java.sql.Date
...What I am saying that save the milliseconds/nanoseconds as plain longs and convert them to whatever objects you are using (obligatory joda-time plug). One hacky way which can be done is to store the date component as one long and time component as another, for example right now would be 20100221 and...
Why use double indirection? or Why use pointers to pointers?
...clude <stdio.h>
#include <stdlib.h>
#include <string.h>
int wordsinsentence(char **x) {
int w = 0;
while (*x) {
w += 1;
x++;
}
return w;
}
int wordsinmono(char ***x) {
int w = 0;
while (*x) {
w += wordsinsentence(*x);
x++;
...
boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
...forward manner:
struct street_entry
{
// quadrant coordinates
int x;
int y;
std::string name;
street_entry(int x,int y,const std::string& name):x(x),y(y),name(name){}
};
typedef multi_index_container<
street_entry,
indexed_by<
hashed_non_unique< // indexed by...
Check if a class has a member function of a given signature
...NAE<U, &U::used_memory>*);
template<typename U> static int Test(...);
static const bool Has = sizeof(Test<T>(0)) == sizeof(char);
};
template<typename TMap>
void ReportMemUsage(const TMap& m, std::true_type)
{
// We may call used_memory() on m here.
}...
INT 10H 中断介绍 - C/C++ - 清泛网 - 专注C/C++及内核技术
INT 10H 中断介绍int_10h_instructionsINT 10H 是由 BIOS 对屏幕及显示器所提供的服务程序，而后倚天公司针对倚天中文提供了许多服务程序，这些服务程序也加挂在 INT 10H ...
INT 10H 是由 BIOS 对屏幕及显示器所提供的服务程序。使用 INT 10H...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1 ?
5 Answers
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How to use the TextWatcher class in Android?
...extWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// TODO Auto-generated method ...
Performance of Arrays vs. Lists
Say you need to have a list/array of integers which you need iterate frequently, and I mean extremely often. The reasons may vary, but say it's in the heart of the inner most loop of a high volume processing.
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What does InitializeComponent() do, and how does it work in WPF?
...dComponent() loads the XAML file that is located at the passed in URI, and converts it to an instance of the object that is specified by the root element of the XAML file.
In more detail, LoadComponent creates an instance of the XamlParser, and builds a tree of the XAML. Each node is parsed by the ...