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C++ equivalent of java's instanceof
...ceOfMacros.h
#include <set>
#include <tuple>
#include <typeindex>
#define _EMPTY_BASE_TYPE_DECL() using BaseTypes = std::tuple<>;
#define _BASE_TYPE_DECL(Class, BaseClass) \
using BaseTypes = decltype(std::tuple_cat(std::tuple<BaseClass>(), Class::BaseTypes()));
#de...
How to make an Android device vibrate?
...000};
// The '0' here means to repeat indefinitely
// '0' is actually the index at which the pattern keeps repeating from (the start)
// To repeat the pattern from any other point, you could increase the index, e.g. '1'
v.vibrate(pattern, 0);
When you're ready to stop the vibration, just call the...
Why is a round-trip conversion via a string not safe for a double?
...ng;
int total;
int count;
int scale;
int absscale;
int index;
total = (int)wcslen(src);
remaining = total;
// skip the leading zeros
while (*src == '0') {
remaining--;
src++;
}
if (remaining == 0) {
*value = 0;
goto done;...
Accessing nested JavaScript objects and arays by string path
...ring = function(o, s) {
s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
s = s.replace(/^\./, ''); // strip a leading dot
var a = s.split('.');
for (var i = 0, n = a.length; i < n; ++i) {
var k = a[i];
if (k in o) {
o = o[k...
Show current assembly instruction in GDB
... │
│0x7ffff740d769 <__libc_start_main+233> callq *0x18(%rsp) │
>│0x7ffff740d76d <__libc_start_main+237> mov %eax,%edi │
│0x7ffff740d76f <__libc_start_main+239> callq 0x7ffff7427970 <exit> │...
Why does [5,6,8,7][1,2] = 8 in JavaScript?
...ay + — array subscript access operation,
where index is `1,2,3`,
which is an expression that evaluates to `3`.
The second [...] cannot be an array, so it’s an array subscript operation. And the contents of a subscript operation are not a delimited ...
What is the difference between RegExp’s exec() function and String’s match() function?
...only when the regex is not global).
Another use with Exec, is getting the index or position, of a match. When you have a variable for your regex, you can use .lastIndex and get the position of the matching. A regex object has .lastIndex, and the regex object is what you do .exec on. Dot match is...
How do you embed binary data in XML?
...
XML is so versatile...
<DATA>
<BINARY>
<BIT index="0">0</BIT>
<BIT index="1">0</BIT>
<BIT index="2">1</BIT>
...
<BIT index="n">1</BIT>
</BINARY>
</DATA>
XML is like violence - If it doesn't so...
How much size “Null” value takes in SQL Server
...lso depends a bit (From the comments section here) "For heap and clustered index record, there's always a NULL bitmap . For non-clustered indexes, there won't be if all columns in the index are NOT NULL."
– Martin Smith
Sep 16 '10 at 23:51
...
How can I tell when HttpClient has timed out?
...@UserControl check TaskCanceledException.CancellationToken.IsCancellationRequested. If false, you can be reasonably certain it was a timeout.
– Todd Menier
Apr 28 '14 at 22:29
3
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