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Split List into Sublists with LINQ
...t;> Split<T>(IList<T> source)
{
return source
.Select((x, i) => new { Index = i, Value = x })
.GroupBy(x => x.Index / 3)
.Select(x => x.Select(v => v.Value).ToList())
.ToList();
}
The idea is to first group the elements by indexes. D...
How can I generate an INSERT script for an existing SQL Server table that includes all stored rows?
...l need to run it at the database level.
Right-click the database in SSMS, select "Tasks", "Generate Scripts...". As you work through, you'll get to a "Scripting Options" section. Click on "Advanced", and in the list that pops up, where it says "Types of data to script", you've got the option to s...
Turn off autosuggest for EditText?
...g Galaxy Note II (SPH-L900) stock Android 4.1.2 from Sprint. The keyboard selected was "Samsung Keyboard," and apparently this was the default for this phone when the customer received it from Sprint. So this problem apparently has persisted over the years for at least some of the important Samsun...
Hidden features of C
...
Multi-character constants:
int x = 'ABCD';
This sets x to 0x41424344 (or 0x44434241, depending on architecture).
EDIT: This technique is not portable, especially if you serialize the int.
However, it can be extremely useful to ...
Underlining text in UIButton
...
You can do it in the interface builder itself.
Select the attribute inspector
Change the title type from plain to attributed
Set appropriate font size and text alignment
Then select the title text and set the font as underlined
...
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
...ame T >
T const &printf_helper( T const &x )
{ return x; }
char const *printf_helper( std::string const &x )
{ return x.c_str(); }
template< typename ... Req, typename ... Given >
int wrap_printf( int (*fn)( Req... ... ), Given ... args ) {
return fn( printf_helper...
Efficient way to determine number of digits in an integer
...cialization optimization for 8-bit numbers
template <>
int numDigits(char n)
{
// if you have the time, replace this with a static initialization to avoid
// the initial overhead & unnecessary branch
static char x[256] = {0};
if (x[0] == 0) {
for (char c = 1; c != 0...
How to create a trie in Python
...a linear search. But the search would be limited to the number of possible characters -- 27 if we include _end. Also, there's nothing to be gained by creating a massive list of nodes and accessing them by index as he suggests; you might as well just nest the lists.
Finally, I'll add that creating a...
PHP random string generator
...keyspace A string of all possible characters
* to select from
* @return string
*/
function random_str(
int $length = 64,
string $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
): string {
if ($length < 1) {
throw new \Ran...
STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...写测试代码定义一个结构体来试试：[cpp]view plaincopystructa{char*pName;intm_a;} 引言
STL的map容器中，key的类型是不是随意的呢？
实践
编写测试代码
定义一个结构体来试试：
struct a
{
char* pName;
int m_a;
};
...
map<a, i...